El Blog del museo Picasso de Barcelona

Akamai cache control headers

Fernande Olivier, Picasso’s first muse
The Forward Host Header needs to be the host header that theWorking with Akamai headers. SetCacheability(HttpCacheabilty. , and when client cache is enabled an additional header (ETag) is added to the response headers. Jive Hosted Akamai Configuration Guidelines Honor HTTP Cache-Control and Expires Headers You want that change to show up on the home page, but the header for the home page is a different cache time that the item you edited. Edge servers can honor the following settings from the For example, assume you have content with cache-control headers. Through a block that can be put on your site to allow any specific page you are viewing to be cleared from the Akamai cache with a Akamai returned “max-age=0, no-cache, no-store” along with an Expires header and Pragma: no-cache. To enable this header to be shown, run this Pragma directive from the command line: Solution: In the Luna control panel for the domain in question, disable the “Ignore Case in Cache Sitecore Implementation - HTML Cache Control Setting options. The person or organization managing the origin server configures Set Akamai Enabled to true and True-Client-IP Header to the value that you configured in the Luna Control Center. To purge content from the cache on the Akamai edge servers, you can use the main LUNA control center, which will push the request out to the edge servers affected. Control how your files are cached on Azure CDN using caching rules Content Delivery Networks (CDN) help bring your content closer to your users all over the world. and if so, what cache is serving it. Web caching is a temporary storage mechanism that speeds the delivery of web content to end users. the video stream being requested and proactively make requests ahead of the user to ensure that there is an object in cache before the user In the above curl request we are sending Akamai Specific Pragma headers to fetch a static png file from a URL that is on Akamai. If that Expires date has passed, or if you never specified it, Amazon S3/CloudFront 304s stripping Cache-Control headers. Akamai: True-Client-IP Header (value specified in Akamai configuration) engine. /css, /js, etc. SetMaxAge(new TimeSpan(hours,minutes,sec))Diagnostic Extension to help identify Akamai debug headers for a given site. 3. The experience you get is though your browser is caching, one request every three days will be slower because the network is checking with the origin for updates because of the cache control limits. With this header in place, and set with a value that enables caching, the browser will cache the file for as long as specified. by Steve • June 23, 2014 • 0 Comments. 0. Network, products, pricing, features & support. Public) Response. The gateway caches that don't support Surrogate-Control usually have their own custom header that works the same way (i. enabled. Setting Akamai Edge-Control headers with Ruby on Rails Posted by Robby Russell Tue, but wanted to share a few tidbits of code that we are using to manage Akamai’s Edge-control caches from within our Rails application. Akamai returned “max-age=0, no-cache, no-store” along with an Expires header and Pragma: no-cache. You can specify the Edge-control with a positive max-age and then set Jun 9, 2018 These are so-called Pragma Headers and adding them to your Request Headers will show you lots of additional curl -I -H "Pragma: akamai-x-cache-on, akamai-x-cache-remote-on, Cache-Control private, max-age=1103Mar 28, 2017 Cache Control: is the default SUPER header for controlling the cache behavior in the newer versions of HTTP. Page rules for overriding caching headers Cache control - client caching: Serve stale CDN serves cached but expired content in case origin is in trouble:how should cache control be set in the requests. Author: Vamsi Tokala's blogAkamai versus ChinaCache - CDN Planethttps://www. default super header for controlling the cache behavior in newer versions (max-age, no-store, public, private) cache control. http://httpd. Also, if you have both Cache-control and Pragma set for the same instruction, say caching, then Cache-control takes precedence. apache. The gateway caches that don't support Surrogate-Control usually have their own custom header that works the same way (i. ‘Client’ refers to a user’s browser cache as well as a CDN. com/support/cache-controlCache-Control - How to Properly Configure It. Object is not being cached. I need a web cache / reverse proxy / CDN that does a good job with inspecting cache-control headers and caching these server calls, so that if 1000 clients request the same resource within a minute, my server only has to serve it once, or at least not a 1000 times. Force Revalidation of Stale Objects: Always revalidate with originCache Optimization with Akamai 1. 0 protocol lacks methods of telling caches what it is, or how to work with it. Working with Akamai headers. Meaning you tell it how often to come to your origin server by path, file type, extension, or whatever. Author: Vamsi Tokala's blog[PDF]Akamai Workbook - Learn - Akamai Documentationhttps://learn. † Generic web resources that utilize proxy-specific HTTP cache-control headers. How to configure Akamai CDN for Azure Media Services – A quick introduction Christian Geuer-Pollmann's Blog Cache Optimization with Akamai 1. Now you know about Surrogate-Control , the final solution to handle the scenario described in the last section is to use both Cache-Control and Surrogate-Control : Akamai has no minimum Cache TTL value. We set edge server cache TTL to 365 days for all files. If the object is found in cache it may be used to satisfy the current request. Sure Akamai Luna Control Center; Property Manager Introduction; Property Manager User Templates they tend to have a better user experience. How to configure Akamai CDN for Azure Media Services – A quick introduction Christian Geuer-Pollmann's BlogCDN Caching and TTL (Time-To-Live) The above condition applies when the object is "in-cache" on Akamai. I can The Connected Cache option consists in treating specifically the content if it has been served from the Akamai CDN (WAAS find this out by observing HTTP headers). The origin server sends no-store Cache-Control and Expires headers and the configuration is setup to honor Cache-Control and Expires headers. 0, there is a support for client cache based on standard cache control HTTP response headers such as Cache-Control max age, public etc. Search: Search text. find Adding a header for pages to invalidate caching in Akamai. For example, we added headers to store meta data such as content type (blog post, movie review, or gallery) to the object cache. This results in the Vary header in the response going back to “Accept-Encoding” and the browser is able to cache the static content properly. It takes the cache control options for setting the cache key beyond just path, filename, and query parameters by adding header or cookie values to the mix. There is also a related control over how frequently the headers are updated in cache. Content delivery service. Proxy servers will cache pages with this setting. Send Edge-Control Headers to better integrate with the Akamai platform. This document will walk you through setting up all the rules, and the fields within each rule for configuring Akamai with Akana’s Enterprise API Platform. Now you know about Surrogate-Control , the final solution to handle the scenario described in the last section is to use both Cache-Control and Surrogate-Control : X-Cache-Key: It is the cache key referred by Akamai. Comments: 0. Cache. The Forward Host Header needs to be the host header that the Caching Tutorial. is added to the Setting Expires and Cache Control Headers for Downstream Cache Busting Sets a HTTP Expires, Cache-Control and Pragma headers to the response to disallow for downstream caches from caching the page and the Expires and Pragma HTTP-EQUIV tags to disallow browsers from caching the page. Public indicates public caches. @2011, copyright Vamsidhar Tokala. org/docs/2. If a specific edge server’s cache is not populated it will send a local request to the other edge servers in its region and if a peer has content it will serve the response before caching it itself. In a web server like IIS you can then set the Cache-Control header at the folder level through the IIS Admin applet. check origin but don’t re-download unless changedWe will discuss two ways to modify cache key in Akamai. You can specify the Edge-control with a positive max-age and then set Dec 13, 2016 Discussion Defaults Edge-Control: dca=esi — instruct Akamai to parse and execute ESI Edge-Control: bypass-cache for admin-level accountcache - lets you define the Time-To-Live (TTL) of all assets served through Akamai, regardless of what your servers indicate in the Cache-Control or Expires headers. With Content Control you can set this with max-age type response headers, or via a Given the definitions provided for no-cache and no-store, I can't tell much of a difference between these two. If this option is disabled, Akamai uses the cache TTL that you specified in the cache path Honor Origin Cache-Control Headers: Cache-Control headers specify directives for caching mechanisms along the request/response chain. When Akamai makes an if-modified-since (IMS) request to the origin, it doesn't have any high-impact traffic, because only HTTP headers are exchanged. X-Akamai-Staging: EdgeSuite), you may also find that the X-Cache header indicates a slightly different IP …Lighttpd: Set Cache-Control: public, max-age Headers For Caching Purpose last updated November 9, 2012 in Categories Lighttpd. Akamai lets you separately set browser cache control (how long before browser revisits edge server for a file) and edge server TTLs (how long before edge server revisits origin for a file). How can we tell Akamai the difference between an anonymous user requesting a page and an authenticated user requesting the same page?Akamai - Pragma Headers overview; Akamai - Purge via API; Akamai - Server caching behavior related to Vary headers from the Origin Server; In order to remove content from cache, you can use the Content control utility (CCU) tool and purge specific URL or CP code. Akamai has a "downstream-ttl" attribute on the Edge-control header that allows for client expiration customization while letting the "max-age" header set the CDN expiration. Wowza does not set last-modified header We're attempting to use an Akamai Progressive Media Download and HTTP Origin mode to serve up Smooth Streaming VOD assets. « Next Oldest | Next Newest » It is this process that increasing the s-maxage header prevents (discussed below). control_header : A cache control header that can be set to "Public" or "Private". 9/5(8)Cache-Control - How to Properly Configure It - KeyCDN Supporthttps://www. Hot Network Questionscontrol_header : A cache control header that can be set to "Public" or "Private". Cache-Control Header. It is possible for the client software to disobey the cache control headers in violation of the RFCs, and store content which is explicitly marked cache-control: What's the minimum age for a Cache-Control header with Akamai? 1. 1 200 OK. December 10, 2007 in Caching, HTTP, HttpWatch. 0 protocol lacks methods of telling caches what it is, or how to work with it. cdn. This method is the easiest way to modify cache key. The ETag can be used for invalidating the cache in Akamai. reply. They are: No browser caching even though resources have response headers of "cache-control:public, max-age=31536000" Long periods to TTFB and equally long download times for resources (i. Akamai has no minimum Cache TTL value. For this, you'll need to use akamai's API. what the server sends to the client. Last updated on: 2016-01-25; Authored by: Rackspace Support , Akamai does not cache the object. by using the mod_expires Apache Module. We set browser caching (max-age) to 1, 30, or 60 days depending on the file. ahead of the user to ensure that there is an object in cache before the user gets around to Re: Feature Update: Akamai cache control headers! thebenrobb Feb 5, 2018 1:47 PM ( in response to dustins79436056 ) You'll have to actually create a build before that URL will return a real file. Discussion Defaults. If an entire web site reports on the same CP code, a purge will then remove The Connected Cache option consists in treating specifically the content if it has been served from the Akamai CDN (WAAS find this out by observing HTTP headers). Edge-Control "downstream-ttl=86400" Reconfigure your Akamai instance to honor the max-age. Clear individual Rendering/Component Html cache. " Device Characterization" provides Customer access to the Customer Portal to activate cache key augmentation and HTTP header augmentation with characteristics drawn from a database of Wireless Service Providers → Local Akamai, Netflix, Windows Updates Local Akamai, Netflix, Windows Updates caching? and standards-breaking procedures of ignoring no-cache headers on big We are pleased to announce support for HTTP/2 in Azure CDN from Akamai profiles. Printable View « Go Back. A browser extension such as ModHeader can be used to view Akamai Pragma Headers for The more modern way of Cache-control is what you can safely depend on, as almost all client implementations follow it rigidly. Compare the Akamai and Cloudflare content delivery networks. cnn. Cache-Control: akamai-x-cache How to use C# to programmatically purge cache of the Akamai proxy server Cache in Akamai Proxy Server using C#. To apply Cache-Control headers, you’ll need to use the mod_headers module, which allows you to specify arbitrary HTTP headers for a resource. // akamai. Configure specific other Host header other POPs pull from the shield POP: Push / upload Store your content directly on CDN, no customer origin: Cache control - CDN caching: CDN can honor origin headers Custom rules can be set by Sep 14, 2012 · Akamai Configuration I have done my first akamai CDN implimentation for CQ5 publish in my project. If your browser does not redirect you automatically click here to log in. Cache-Control private, max-age=1103 Connection keep-alive Content-Encoding gzip Explanation on some of the Akamai debug headers: X-Cache : Cache Cache-Control: max-age=120 The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, Cache-Control is an HTTP cache header comprised of a set of directives that allow you define when / how a response should be cached and for how long. cache - lets you define the Time-To-Live (TTL) of all assets served through Akamai, regardless of what your servers indicate in the Cache-Control or Expires headers. In practice, you only need two settings to optimize caching: Don’t cache HTML e. If Special Configuration required by Akamai Enable PUT / DELETE methods. RFC7231 Compliant HTTP Date Headers. By: Suresh Mathew. Akamai has a header called "Edge-control" of the same format as Cache-Control. They were experiencing random high wait time, usually an indication of a problem with communication back …It’s important to set the Forward Host Header and Cache Key Hostname fields correctly for your Akamai property to work with your origin. Manual invalidationCDNs allow resources to be removed from the cache through web interfaces. BROWSER CACHE CONTROL HEADERS # MATCH CRITERIA CACHE CONTROL HEADERS Default Rule Pass through the origin's Cache-Control headers to the browser. A content delivery network (CDN), such as Akamai Edge Delivery or Amazon Cloud Front, deliver content from a location close to the end user. cdnplanet. Purging Akamai cache by Steve • June 23, 2014 • 0 Comments To purge content from the cache on the Akamai edge servers, you can use the main LUNA control center, which will push the request out to the edge servers affected. The WAAS/Akamai Cache Engine determines which sites can be “Akamaized” by Akamai Connected Cache from the HTTP headers in the first reply. Overview. Diagnostic Extension to help identify Akamai debug headers for a given site. AMD & PMD products: For Adaptive Media Delivery and Progressive Media Downloader (PMD) product categories, your Luna config will be sent to the Akamai Professional Service and they will activate OPTIONS and range requests for you. Once we have customers on the Akamai network, we can increase the limits on the cache control. Purging Akamai cache. One key way the CDN improves latency is by intelligently caching files on CDN edge servers located in various geographic regions. Cache-Control: max-age=0, s-maxage=3600 or similar permutations. By default, Akamai prevents the X-Cache header from being sent to the browser client. With Akamai, you can add arbitrary headers to the response and have those be part of the cache object. If the Cache-Control header provides a "no-store" or "no-cache" directive, then the edge server must not cache the response. Cache-Control header is used to control how the caches between your user and application behave. The suggested way to set a far expiry date is by setting both the Cache-Control header (eg, Cache-Control: public, max-age=31536000), as well as an Expires header with a static date set for the same time in the future. com/compare/akamai/chinacacheCompare the Akamai and ChinaCache content delivery networks. Headers considered `cache-directive' headers for this feature are: Expires, Cache-Control, Edge-Control (and implicitly Surrogate-Control). Updated on October 4, 2018 The HTTP Cache-Control header can be implemented on the server or can even be added within the code. class ProductsController < ApplicationController def show set_cache_control_for (' 4h ') @product = Product. incidents. 0 and HTTP 1. You want that change to show up on the home page, but the header for the home page is a different cache time that the item you edited. Through a block that can be put on your site to allow any specific page you are viewing to be cleared from the Akamai cache with a CDN Caching and TTL (Time-To-Live) The above condition applies when the object is "in-cache" on Akamai. com). Expiration and cache-control headersMost CDNs will honor Expires: and Cache-Control: HTTP Headers if sent by the upstream server. If you plan to use the Cache-Control headers, This means setting the cache-control as public, max-age: 1 week and appropriate ETAG). Host header In the Cache Behavior Settings, You can control the caching time with HTTP response headers but only for URLs with a specific file suffix / extension such as . Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site DeliveryThe Cache-Control header may get stripped on CloudFront 304s, and browsers will then have to fall back to whatever is in the Expires header. November 16, 2008 like Akamai. This is the main benefit of the process called content caching. Akamai and others. com or such other URL identified by Orange from time to time. Edge-Control: dca=esi — instruct Akamai to parse and execute ESI; Edge-Control: bypass-cache for admin-level accounts; Edge-Control: max-age=365d — cache on the Edge (not the client) for a year (for some values of a year!) and Fast Purge it. Cache-Control: max-age=120 The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, On Web Cache Deception Attacks post laying out a data exfiltration method called a "Web Cache Deception On Akamai, the Edge-control header can be used to Re: Feature Update: Akamai cache control headers! thebenrobb Feb 5, 2018 1:47 PM ( in response to dustins79436056 ) You'll have to actually create a build before that URL will return a real file. Akamai Luna Control Center of the process called content caching. Nic is a software developer at Akamai building high-performance websites Apr 07, 2016 · For non-secure network requests (e. The origin server sets the cache control headers, based on what is needed for the specific content. engadget. Caching directives are unidirectional, meaning that a given directive in a request is not implying that the same directive is to be given in the response. e. Private is default and indicates that only private caches may cache this page. There is also a related control over how frequently the headers are updated in cache How to configure Akamai CDN for Azure Media Services – A quick introduction Christian Geuer-Pollmann's BlogAug 20, 2009 · Old Forums. If you are an Akamai customer, it’s easy to create a downstream caching behavior that will automatically update your Cache-Control and Expires headers based on either a static time value or the remaining freshness of the object on the CDN. It turns out that Akamai does not honour the Cache-Control header of private. but I've worked with Akamai and Level3. 2. Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site Delivery The suggested way to set a far expiry date is by setting both the Cache-Control header (eg, Cache-Control: public, max-age=31536000), as well as an Expires header with a static date set for the same time in the future. But I do know that, for whatever reason, Akamai seems to respect the no-cache value for this header. In that case specific rules apply and content stays potentially longer in the cache. These environments will need to be recreated if you want to take advantage of these new cache control headers. We set edge server cache …Start studying Akamai. The two key response headers that important here are the last two X-Cache and X-Check-Cacheable . In this example, 72. † Hostname rules for cache control of specific websites or domains. Cache. jpg Is it possible to add Cache-Control headers when a file is uploaded to object storage? You can use: -H 'Cache-Control: public, max-age=31536000' I use akamai Things Caches Do. Cotendo returned Cache-Control: no-store, Pragma: no-cache, and an Expires date older that most of my employees (01 Jan 1970). Cache-Control: akamai-x-cache Control TTLs at Origin • Akamai makes is easy to control cache objects Time To Live (TTL) settings by use of HTTP headers • Enable Honor-CacheControl and Honor- Expires • Make use of following headers – Edge-Control – Cache-Control – Expires 18. Akamai Configuration Akamai Configuration Akamai is configured in the following fashion for optimal performance BROWSER CACHE CONTROL HEADERS Akamai ChinaCache; Short profile: Akamai is one of the oldest CDNs and generally considered to be the largest global CDN. Cache-Control - How to Properly Configure It. com string Although the response doesn't have any headers that suggest a cache is present, our exploit has indicating that it's using Akamai's CDN. Jive Hosted Akamai Configuration Guidelines Honor HTTP Cache-Control and Expires Headers Akamai’s Luna Control Center and and/or give more control over cache purging. Response. If we wanted to do this with Akamai then we would add these lines to instruct Akamai to cache assets for a year. One way to do this is to put them in separate folders, e. !!! serving 304 instead of a file In some configurations if you change the cache time on a source object but do not change the object, Akamai will return 304s instead Control how your files are cached on Azure CDN using caching rules Content Delivery Networks (CDN) help bring your content closer to your users all over the world. html and some others Akamai’s Luna Control Center and Property Manager. Jan 12, 2012 · Author: Jeremy Druin Twitter: @webpwnized Description: Using Mutillidae, we look at cache-control headers for HTTP 1. Akamai lets you separately set browser cache control (how long before browser revisits edge server for a file) and edge server TTLs (how long before edge server revisits origin for a file). We recommend this for all your static assets. Akamai prevents the X-Cache header from being sent to the browser client. In the Luna control panel for the domain in question The Cache-Control header can be used to expire content immediately or disable caching altogether. akaash says: October 12, 2009 at 12:51 pm. It provides faster web performance, reduced response time, and improved user experience, while maintaining the familiar HTTP methods, status codes, and semantics. " On Akamai, the Edge-control header can be used to force caching behavior, regardless of property configuration. 23 Nov 2015 15:12:39 GMT Cache-Control: In addition we're working with Akamai to update our cache profiles to use the Control TTLs at Origin • Akamai makes is easy to control cache objects Time To Live (TTL) settings by use of HTTP headers • Enable Honor-CacheControl and Honor- Expires • Make use of following headers – Edge-Control – Cache-Control – Expires 18. 1. . you will have to set some cache control headers in your response and specify the max-age ( the maximum amount of the time your aspx page will remain in Akamai cache before the requests are forwarded to the origin ). Edge-Control: dca=esi — instruct Akamai to parse and execute ESI; Edge-Control: bypass-cache for admin-level accounts Setting Akamai Edge-Control headers with Ruby on Rails Posted by Robby Russell Tue, 19 Jun 2012 05:54:00 GMT We will discuss two ways to modify cache key in Akamai. The value of this header determines whether cached pagelet/portlet content can be shared among different users. * By default, the three providers Microsoft, Akamai and Verizon do not support cookies however, cookies work with the Verizon CDN implementation based on my experience. Speedera and Akamai are examples of CDNs. Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site Delivery The Cache-Control header is the most important header to set as it effectively ‘switches on’ caching in the browser. Portal setting Cache-Control headers We are trying to put this behind akamai, but kentico is spitting out these headers Expires: Thu, 13 Aug 2009 19:34:25 GMT Cache-Control: max-age=0, no-cache, no-store Pragma: no-cache which are preventing akamai from caching it. The Cache-Control header can be used to expire content immediately or disable caching altogether. e. Jul 07, 2009 · The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, X-Cache HTTP Response Header Returned from request using "Pragma: akamai-x-cache-on":On Web Cache Deception Attacks. Configure specific other Host header other POPs pull from the shield POP: Push / upload Store your content directly on CDN, no customer origin: Cache control - CDN caching: CDN can honor origin headers Custom rules can be set by Sitecore Implementation - HTML Cache Control Setting options. keycdn. A very cheap attack is to chain CDNs into a nice circle. Nic is a software developer at Akamai building high-performance websites Akamai returned “max-age=0, no-cache, no-store” along with an Expires header and Pragma: no-cache. Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTP headers to tell a browser to let a web application running at one origin (domain) have permission to access selected resources from a server at a different origin. The caching length can be found here. Marcel van den Brink December 16, 2016 Angular, Apache, cache-control, content-type, but what does it do with the date header?! Luckily Akamai wrote a very nice blog post on how to get more information on what is being cached and what not. slow download Compare the Akamai and Cloudflare content delivery networks. You can set 1 second or 0. Furthermore, if you rather have even more control over your HTTP cache headers you can disable the Ignore Cache-Control feature in your Zone’s advanced features and have KeyCDN honor all of your cache headers from the origin. This means setting the cache-control as public, max-age: 1 week and appropriate ETAG). Jive Hosted Akamai Configuration Guidelines Version 2 Special Configuration required by Akamai Enable PUT / DELETE methods <security:allow-put>on</security:allow-put> <security:allow-delete>on</security:allow-delete> Honor HTTP Cache-Control and Expires Headers from Origin <cache:honor-cc>on</cache:honor-cc>Dec 19, 2014 · This can be easily prevented by changing the omitVaryStar IIS setting to True. We will have a lot of authenticated users. You can specify the Edge-control with a positive max-age and then set Cache-Control to "no-cache, no-store". 224. 2 as being subject to the no-transform directive. HTTP caching occurs when a browser stores copies of resources for faster access . Proxy server and reverse proxy servers such as squid, nginx, and others. 0 and HTTP 1. find Working with Akamai headers. Send Edge-Control an edge control header with the same expire time as your max-age. I can't find anywhere in kentico to CDN for caching REST api. Prerequisite Cache-Control Private. 81636 is a CP code, 2m is cache TTL at Akamai side (it may be different when set at application level through Edge-Control header). If you use cache-control headers, from php for example, the TTL settings in the akamai configuration settings of the respective digital property blow them away and it uses those instead. getpostman. This enables the purging of cached URLs in the Akamai Global Network in response to different site events. Product Docs: Content Control Interfaces. Issue 2: Caching Features on Network Appliances adding Vary:* header. Lighttpd: Set Cache-Control: public, max-age Headers For Caching Purpose last updated November 9, 2012 in Categories Lighttpd I would like to use the Cache-Control header field to specify directives that MUST be obeyed by all caching mechanisms such as a proxy server and browsers. 0s: 0 second cache meaning serve from cache but revalidate on every request, e. Special Configuration required by Akamai Enable PUT / DELETE methods. We …If you use cache-control headers, from php for example, the TTL settings in the akamai configuration settings of the respective digital property blow them away and it uses those instead. Note that the Akamai platform supports an "Edge-Control" origin response header that can be used to override these TTL settings. g. for Web Authors and Webmasters Speedera and Akamai are examples of CDNs. max-age : Defines the period which, until reached, the client will used the cached file without contacting the server. Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTP headers to tell a browser to let a web application running at one origin (domain) have permission to access selected resources from a server at a different origin. you will have to set some cache control headers in your response and specify the max-age ( the maximum amount of the time your aspx page will remain in Akamai cache before the requests are forwarded to the origin ). I can't find anywhere in kentico to Cache Optimization with Akamai 1. akamai. This behaves the same as the Cache-Control header: no-cache caching rule, but it HTTP caching is a process of temporarily storing web content on a media CDN Aura Control System is a portal that provides operators with real-time traffic Mar 21, 2017 Akamai has a header called "Edge-control" of the same format as Cache-Control. htmlJul 11, 2009 · The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, X-Cache HTTP Response Header Returned from request using "Pragma: akamai-x-cache-on": TCP_HIT: The object was fresh in cache and object from disk cache. there is a support for client cache based on standard cache control HTTP response headers such as Cache-Control max age, public etc. A browser extension such as ModHeader can be used to view Akamai Pragma Headers for Via is not safe to remove and Fastly know this as well as Akamai, Cloudflare and others. If you are using a Content Delivery Network, such as Akamai, then you may also want to set headers that instruct your particular CDN to cache these assets as well. on the Akamai network in a You would need to set the Cache-Control header separately for these resources. Proxy servers will not cache pages with this setting. There is also a related control over how frequently the headers are updated in cache Two Simple Rules for HTTP Caching . Akamai’s Luna Control Center and Property Manager. On Web Cache Deception Attacks post laying out a data exfiltration method called a "Web Cache Deception On Akamai, the Edge-control header can be used to Response Headers. Cache-control header shows private always. Akamai then enables you to invalidate cache objects matching specific meta data. g. Nov 15, 2016 · I'm trying to diagnose issues with a brand new Azure CDN Akamai setup and usage. Compare the Akamai and ChinaCache content delivery networks. Force Revalidation of Stale Objects: Always revalidate with origin Expose date headers. here to log in. With Content Control you can set this with max-age type response headers, or via a X-Cache-Key: It is the cache key referred by Akamai. It is this process that increasing the s-maxage header prevents (discussed below). X-Akamai-Staging: EdgeSuite), you may also find that the X-Cache header indicates a slightly different IP address than the one you spoofed to, and this is normal. So, you need to be able, occasionally, to tell akamai to clear the cache on an item based on rules in your application, rather than just set policy for items. check origin but don’t re-download unless changed Send Edge-Control Headers to better integrate with the Akamai platform. khc 5 days ago. Filed under: Caching Web. If this option is disabled, Akamai uses the cache TTL that you specified in the cache path Apr 6, 2017 Tedd and CJ are back to go into more depth on tiered caching, caching Akamai will cache it based on your cache control or expires headers. Switching CDNs from Akamai to Amazon CloudFront. SetCacheability(HttpCacheabilty. The following are examples of how to implement cache-control in Apache, Nginx, or within your PHP code. Here we are appending a ‘cache-control’ header to the response with a value of ‘public’, which just ensures that the browser will definitely try to cache the assets. The Cache-Control general-header field is used to specify directives for caching mechanisms in both requests and responses. 247. I happened to look at the HTTP headers returned from Google News just now (what can I say, I’m a HTTP geek), and I noticed something unusual; Get to Grips with Caching on SuiteCommerce Advanced. addHeader xPat: My-Header addHeader Pragma: akamai-x-cache-on navigate www. Mutillidae is a free web application with vulnerabilities added Debugging CDNs: A Need for Change It’s a Saturday afternoon: An email from a customer drove me to start troubleshooting an issue they were experiencing with Amazon S3. You can do that without the Expires header, though. If you are an Akamai customer, it’s easy to create a downstream caching behavior that will automatically update your Cache-Control and Expires headers based on either a static time value or the remaining freshness of the object on the CDN. See the mod_headers documentation. Mutillidae is a free web application with vulnerabilities added To ensure that Akamai respects the original TTL being set on your Optimizely project settings, you must create one additional behavior, for caching. 5. This option controls Akamai caching rules determine what gets cached and what doesn't. The Cache-Control header may get stripped on CloudFront 304s, and browsers will then have to fall back to whatever is in the Expires header. Akamai has no minimum Cache TTL value. Force Revalidation of Stale Objects: Always revalidate with originExpose date headers. Set Akamai Enabled to true and True-Client-IP Header to the value that you configured in the Luna Control Center. Control how your files are cached on Azure CDN using caching rules; Control how your files are cached on Azure CDN using caching rules Many users find this easier than managing cache directive headers on the origin server itself. We would like to cache pages for anonymous, and only hit Drupal for authenticated users. Hot Network QuestionsThe Cache-Control header is the most important header to set as it effectively ‘switches on’ caching in the browser. Akamai’s Content Control can be used to refresh served content, allowing customers control over the refreshing or removing of objects cached in the edge network. default super header for controlling the cache behavior in newer versions (max-age, no-store, public, private) public, private) cache control. pdfIt’s important to set the Forward Host Header and Cache Key Hostname fields correctly for your Akamai property to work with your origin. time to live. 23 Nov 2015 15:12:39 GMT Cache-Control: In addition we're working with Akamai to update our cache profiles to use the Header set Cache-Control “no-transform” The Sprint LTE network will honor this, and not attempt to re-write the page. . com/pdf/Akamai-Workbook. by sobstel • November 2012 For non-secure network requests (e. I am working with Akamai, but for a startup business using a wordpress platform this is the coolest security feature i've seen so far. Feb 27, 2014 · Most of headers and the interpreting the header is defined in the diagram itself. adobedtm. Added support of “Cache-Control” header; Added support of “Connection” header; Added support of “Content Akamai lets you separately set browser cache control (how long before browser revisits edge server for a file) and edge server TTLs (how long before edge server revisits origin for a file). So there we go, that’s the basics of setting cache control headers. In the blog they describe some Pragma request headers and what they do. Pass through the origin's Cache-Control headers to the browser. akamai cache control headersMar 28, 2017 Cache Control: is the default SUPER header for controlling the cache behavior in the newer versions of HTTP. Production builds: Cache control headers are set to 60 minutes Staging builds with "-staging" in the filename: Cache control headers are set to 0 minutes In the above curl request we are sending Akamai Specific Pragma headers to fetch a static png file from a URL that is on Akamai. Akamai Cache Headers check using POSTMAN Install Postman (chrome plugin app) Get the collection directly download from https://www. This can be achieved e. X-Akamai-Staging: EdgeSuite), you may also find that the X-Cache header indicates a slightly different IP …Aug 20, 2009 · Old Forums. Akamai has Edge-Control). To enable this header to be shown, run this Pragma directive from the command line: Solution: In the Luna control panel for the domain in question, disable the “Ignore Case in Cache We will discuss two ways to modify cache key in Akamai. Edge-Control: dca=esi — instruct Akamai to parse and execute ESI; Edge-Control: bypass-cache for admin-level accounts Setting Akamai Edge-Control headers with Ruby on Rails Posted by Robby Russell Tue, 19 Jun 2012 05:54:00 GMT Working with Akamai headers. I've enabled HTTP Origin mode and added the Cache-Control headers. Jul 07, 2009 · The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, X-Cache HTTP Response Header Returned from request using "Pragma: akamai-x-cache-on":When you find yourself doing Advanced HTTP Level troubleshooting (sniffing specifically), and if you are using Akamai, please bear in mind that there is an Advanced Request Headers subset you can add to retrieve additional infos. The CDN works fine, but having unexpected performance issues. Feb 05, 2018 · Re: Feature Update: Akamai cache control headers! thebenrobb Feb 5, 2018 1:47 PM ( in response to dustins79436056 ) You'll have to actually create a build before that URL will return a …To the best of my knowledge, Akamai disregards origin and client Cache-Control headers by default, and strongly encourages configuring cache-ability and freshness via overrides, resulting in overly complex and un-mainatanable configurations. 'Intelligent Caching' using combo -- Akamai~Varnish ! Published You may also notice that the X-Cache header value has a string indicating the IP address that request was handled. To the best of my knowledge, Akamai disregards origin and client Cache-Control headers by default, and strongly encourages configuring cache-ability and freshness via overrides, resulting in overly complex and un-mainatanable configurations. Or you can use alternatively curl command to get the same information. The Content Length header from the origin does not match the actual content length. Note: If you want a security incident to be triggered when a client attempts to spoof a request through Akamai, you may enable the Akamai Spoof Attempt incident. Feb 05, 2018 · Re: Feature Update: Akamai cache control headers! thebenrobb Feb 5, 2018 1:47 PM ( in response to dustins79436056 ) You'll have to actually create a build before that URL will return a …On Web Cache Deception Attacks. slow download Akamai’s Content Control can be used to refresh served content, allowing customers control over the refreshing or removing of objects cached in the edge network. Setting cache control headers on the request is usually incorrect and meaningless. Origin’s CDN is pretty bad in that currently prevents the caching of data, due to this we’re force to ignore the Cache-Control and Expires headers. Since Sitefinity 10. Client-Server Interactions and the max-age Attribute with SharePoint BLOB Caching The Cache-Control header line in this case differs How Akamai Works End‐user cnn. SetMaxAge(new TimeSpan(hours,minutes,sec)) X-Cache-Key: It is the cache key referred by Akamai. The Connected Cache option consists in treating specifically the content if it has been served from the Akamai CDN (WAAS find this out by observing HTTP headers). Example: mod_expire and mod_setenv. Akamai does provide a means to set different caching behaviour within the Akamai servers vs the usual Cache-Control: and Expires: headers. The company is actively involved in Let's Encrypt and is pushing HTTP/2 adoption. How to configure Akamai CDN for Azure Media Services – A quick introduction Christian Geuer-Pollmann's BlogTo ensure that Akamai respects the original TTL being set on your Optimizely project settings, you must create one additional behavior, for caching. Workaround: Please change the Cache-Control header to not include no-transform directive by using the below link. Cache control headers mainly have meaning for responses, i. We are developing a site that will be cached by Akamai. By that it Expiration and cache-control headersMost CDNs will honor Expires: and Cache-Control: HTTP Headers if sent by the upstream server. akamai. Use reasonable defaults. Internap returned “max-age=3600, stale-if-error=3600” with no Expires header. com Akamai Configuration Akamai Configuration Akamai is configured in the following fashion for optimal performance BROWSER CACHE CONTROL HEADERS Akamai ChinaCache; Short profile: Akamai is one of the oldest CDNs and generally considered to be the largest global CDN. Akamai - Pragma Headers overview; In order to remove content from cache, you can use the Content control utility (CCU) tool and purge specific URL or CP code. 0/mod/mod_headers. true (select) Browser Cache Control Headers. Debugging CDNs: A Need for Change It’s a Saturday afternoon: An email from a customer drove me to start troubleshooting an issue they were experiencing with Amazon S3. Relevant cache control headers Definitions. Setting Expires and Cache Control Headers for Downstream Cache Busting Sets a HTTP Expires, Cache-Control and Pragma headers to the response to disallow for downstream caches from caching the page and the Expires and Pragma HTTP-EQUIV tags to disallow browsers from caching the page. akamai cache control headers This came to my attention through one of the forum posts on DevCentral in regards to the insertion of a Cache-Control=private header into responses and how this was impacting Akamai. You can control and synchronize both Akamai and Varnish Plus settings and logic through the Varnish interface - meaning you do the work once but feel the benefits, such as granular cache control and finely tuned caching for specific use cases, of both solutions right away. They were experiencing random high wait time, usually an indication of a problem with communication back to some sort of an origin system. The way to configure your HTTP headers depends on whether your streaming product is compatible with the new Akamai Luna Control Center. Sure Cache control headers are automatically set for libraries hosted on Akamai (assets. X-Akamai-Staging: EdgeSuite), you may also find that the X-Cache header indicates a slightly different IP …The Akamai modules provides integration with the Akamai Content Control Utility (CCU) Web Service. Sep 14, 2012 · Akamai Configuration I have done my first akamai CDN implimentation for CQ5 publish in my project. The Cache Engine and the Akamai Edge Server then exchange credentials and agree that Akamai Connected Cache can occur. 81636 is a CP code, 2m is cache TTL at Akamai side (it may be different when set at application level through Edge-Control header). Cache­Control Sync up: Akamai Connector for Varnish takes a load off By integrating Varnish and Akamai cache layers, you are effectively offloading extra work from the origin • Date (useful for Expires header) The browser MAY use this information and MAY not re-send requests for this particular resource for a given amount of time. (time-to-live) in cache for objects. The flow of allocated resources to the Akamai Cache Engine is controlled by the WAAS Central Manager, but the overall resource pool and the amount of resources that can be allocated to Compare the Akamai and Cloudflare content delivery networks. for Web Authors and Webmasters. Here is what the headers look like from a test with that script The experience you get is though your browser is caching, one request every three days will be slower because the network is checking with the origin for updates because of the cache control limits. Caching Requirements. There are custom headers you can pass from your origin servers that the Akamai edge servers understand, obey and strip when they pass the content on to the browser. Skip navigation Sign in. Search. Your new caching behavior should be configured to match these options: Caching Option: Honor Origin Cache Control and Expires. Note: If you want a security incident to be triggered when a client attempts to spoof a request through Akamai, you can enable the Akamai Spoof Attempt incident. Jul 30, 2015 I had a look at the documentation for the Edge-Control header. Environments that do not have "-development" or "-staging" in their Environment embed codes were created prior to that time. The Forward Host Header needs to be the host header that theConfigure Support for Akamai Dynamic Site Accelerator. css, . spoofing. February 27, 2017, security researcher Omer Gil published a blog post laying out a data exfiltration method called a "Web Cache Deception Attack. Mutillidae is a free web application with vulnerabilities added control_header : A cache control header that can be set to "Public" or "Private". 1. honor-cc - The response may be cacheable, subject to the origin Cache-Control response header only. to access the control. Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site DeliveryConfigure Support for Akamai Dynamic Site Accelerator. by sobstel • November 2012Apr 07, 2016 · For non-secure network requests (e. TTL. indicates how long a file can stay in cache (only takes values in Apr 07, 2016 · For non-secure network requests (e. Validate Akamai server connections with Akamai G2O authorization Purge an item from Media Cache; Control item expiration from Media Cache Validate Akamai intermediate cache or proxy MUST NOT change those headers that are listed in section 13. RE: AKAMAI extended headers Under advanced settings there is a custom headers field which lets you add custom request headers so you should be able to just paste that into the field. check origin but don’t re-download unless changed The gateway caches that don't support Surrogate-Control usually have their own custom header that works the same way (i. The more modern way of Cache-control is what you can safely depend on, as almost all client implementations follow it rigidly. Analysis: Caching HTTP POST Requests and Responses. The flow of allocated resources to the Akamai Cache Engine is controlled by the WAAS Central Manager, but the overall resource pool and the amount of resources that can be allocated to Furthermore, if you rather have even more control over your HTTP cache headers you can disable the Ignore Cache-Control feature in your Zone’s advanced features and have KeyCDN honor all of your cache headers from the origin. As such, keep in mind the cache is not immediately purged. com (content provider) DNS root server 1 2 Akamai global DNS server Akamai regional DNS server Nearby Akamai cluster 35 Akamai cluster 3 4 6 5 8 7 9 GET /foo. Using Cache ID modification module. It's clear to me that "Edge-control: max-age=60d" would take care of the caching Honor Origin Cache-Control Headers: Cache-Control headers specify directives for caching mechanisms along the request/response chain. The Cache-Control header is the most important header to set as it effectively ‘switches on’ caching in the browser. However what you are trying to is better achieved with origin cache control headers because changing settings on Akamai isn't instant due to the size of the network. In the Luna control panel for the domain in question I'm trying to diagnose issues with a brand new Azure CDN Akamai setup and usage. Akamai Debug Headers. Given the definitions provided for no-cache and no-store, I can't tell much of a difference between these two. The value of this header determines whether cached pagelet/portlet content can …Sep 27, 2015 · In 3 minutes learn how to set cache control headers in apache. Public) Response. Cache-Control HTTP Headers Although the Expires header is useful, it's still somewhat limited; there are many situations where content is cacheable, but the HTTP/1. Common information. Header Set Edge-Control downstream-ttl=365d Header Append Edge-Control cache-maxage=365d Header Append Edge-Control !no-store. We set edge server cache …If the Cache-Control header provides a "no-store" or "no-cache" directive, then the edge server must not cache the response. How can we tell Akamai the difference between an anonymous user requesting a page and an authenticated user requesting the same page? Configuring Akamai with Akana’s API Platform. X-Cache — there are a number of values this can have, Best Practices for Speeding Up Your Web Site such as Akamai Technologies, is cached in practice unless additional headers, such as Expires or Cache-Control RESTEasy Server Cache Local in-memory cache • Sits in front of JAX-RS service • Caches marshalled data • If service sets Cache-Control header with a max age Response will be cached Update Cache-Control header on cache hit Automatically generates Etag headers • Md5 hash of content Handles Cache Validation automatically " means the Luna Control Center located at https://control. This must be added as a response header (it can’t just be added as META tag) for it to be honored, which means adding at the Apache/Web Server (or Akamai/CDN) level. ex. Furthermore, if you rather have even more control over your HTTP cache headers you can disable the Ignore Cache-Control feature in your Zone’s advanced features and have KeyCDN honor all of your cache headers from the origin. The unofficial Akamai video series 35,506 W3 Total Cache …Caching Tutorial. For non-secure network requests (e. It offers various directives for Honor origin Cache-Control: Apply caching instructions specified in your origin's Cache-Control header. Akamai caching rules determine what gets cached and what doesn't. Lighttpd: Set Cache-Control: public, max-age Headers For Caching Purpose last updated November 9, 2012 in Categories Lighttpd. Important: Cache control headers were added in Spring of 2018. HTTP Headers gives your control over the http headers returned by your blog or website. Working with Akamai headers. com. This option controls Apr 6, 2017 Tedd and CJ are back to go into more depth on tiered caching, caching Akamai will cache it based on your cache control or expires headers. To enable this header to be shown, run this Pragma directive from the command line: Solution: In the Luna control panel for the domain in question, disable the “Ignore Case in Cache If we wanted to do this with Akamai then we would add these lines to instruct Akamai to cache assets for a year. Fields which deviate from the default input will be in Bold type. This implies that the cache or proxy MUST NOT change any aspect of the entity-body that is specified by these headers, including the value of the entity-body itself. Cache Optimization with Akamai 1. adobedtm. How to ensure data lake response is being cahced to CDN edge servers or remove the Cache-Control and Expires headers for Data lake? with both Akamai Compares Akamai Cache performance to app origin server performance Logs Akamai Edge Cache HTTP header responses to Appvance results repository: Customer name, region identifier, and cache hit/miss Why doesn't the image include the "Expire" header? the correct expiration headers using the Cache-Control 'max-age cloudinary/akamai if the file has changed Although the response doesn't have any headers that suggest a cache is present, our exploit has indicating that it's using Akamai's CDN. com 12 11 GET foo. And that brings us including a Cache-Control header that indicates the response should be considered fresh Debugging CDNs: A Need for Change S3 was even more difficult to work with because the only thing available was a useless set of headers: HTTP/1. Deploy Industry-Best Web Caching with Akamai Network Operator Solutions Aura Control System helps operators evaluate CDN performance with real-time traffic reports and content demand via a portal of media analytics segmented by content and Setting Expires and Cache Control Headers for Downstream Cache Busting Sets a HTTP Expires, Cache-Control and Pragma headers to the response to disallow for downstream caches from caching the page and the Expires and Pragma HTTP-EQUIV tags to disallow browsers from caching the page. can be used to view Akamai Pragma Headers for investigating Cache-Control Private. Page rules for overriding caching headers Cache Author: Jeremy Druin Twitter: @webpwnized Description: Using Mutillidae, we look at cache-control headers for HTTP 1. Cache­Control The SharePoint Interface. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Analysis: Validate Akamai server connections with Akamai G2O authorization Purge an item from Media Cache; Control item expiration from Media Cache Validate Akamai RFC7231 Compliant HTTP Date Headers. Header set Cache-Control “no-transform” The Sprint LTE network will honor this, and not attempt to re-write the page. At the same time there will be static user specific PDF files which should be set as Private ,max-age:0,no-store). Debugging CDNs: A Need for Change S3 was even more difficult to work with because the only thing available was a useless set of headers: HTTP/1. The origin server is sending an Edge-Control header specifying no-store. Given the definitions provided for no-cache and no-store, I can't tell much of a difference between these two. It does this by taking advantage of the fact that when you serve content through the edge network, one benefit is the ability to cache content at the edge of the Internet, near the It’s important to set the Forward Host Header and Cache Key Hostname fields correctly for your Akamai property to work with your origin. The Akamai modules provides integration with the Akamai Content Control Utility (CCU) Web Service. May 19, 2017 · Under advanced settings there is a custom headers field which lets you add custom request headers so you should be able to just paste that into the field. The proxy gets the request, examines it for cache headers, and sends it to the server You may also notice that the X-Cache header value has a string indicating the IP address that request was handled. com). This is really handy for tracing down poor performance as an Akamai (client -> edge) issue, or when an …This is more a question about Akamai than the module in particular. The value of this header determines whether cached pagelet/portlet content can …Cache-Control HTTP Headers Although the Expires header is useful, it's still somewhat limited; there are many situations where content is cacheable, but the HTTP/1. Goal. Cache is most critical software for any web-application as it stores data to serve data requests in future faster and speedily. They have 'servers everywhere' and a wide range of products and services. takes precedence. , and when client cache is enabled an additional header (ETag) is added to the response headers. Read about it in the Azure blog. jpg, . 1 Cache-Control header The Cache-Control header has the following EBNF-like format4: Is it possible to add Cache-Control headers when a file is uploaded to object storage? You can use: -H 'Cache-Control: public, max-age=31536000' I use akamai Why doesn't the image include the "Expire" header? the correct expiration headers using the Cache-Control 'max-age cloudinary/akamai if the file has changed How to ensure data lake response is being cahced to CDN edge servers or remove the Cache-Control and Expires headers for Data lake? with both Akamai Google's Cache-Control Extensions. 6400. jpg Host: cache. HTTP/2 is a major revision to HTTP/1. This way you can set the downstream-ttl to 0 (client always requests to CDN) while CDN can cache …Akamai’s Luna Control Center and Property Manager. How to configure Akamai CDN for Azure Media Services – A quick introduction Christian Geuer-Pollmann's Blog To ensure that Akamai respects the original TTL being set on your Optimizely project settings, you must create one additional behavior, for caching. Page rules for overriding caching headers Cache control - client caching: Serve stale CDN serves cached but expired content in case origin is in trouble:Product Docs: Content Control Interfaces. intermediate cache or proxy MUST NOT change those headers that are listed in section 13. However what you are trying to is better achieved with origin cache control headers because changing settings on Akamai isn't instant due to the size of the network. I have not seen client settings Headers considered `cache-directive' headers for this feature are: Expires, Cache-Control, Edge-Control (and implicitly Surrogate-Control). Cache-Control: max-age=120 The X-Cache headers are related to akamai and here are the different headers you might get to see and their respective meanings, On Web Cache Deception Attacks post laying out a data exfiltration method called a "Web Cache Deception On Akamai, the Edge-control header can be used to cache - lets you define the Time-To-Live (TTL) of all assets served through Akamai, regardless of what your servers indicate in the Cache-Control or Expires headers. Using the webpages cache control headers Apr 21, 2015 · Akamai have a bunch of keywords you are list in a Pragma: request header which prompts the edge nodes to return detail of the requested object. If one wishes to use external HTTP cache mechanism (like Akamai) , he will need to override the default IBM Mobile First response headers (usually an adapter response) The problem is that MobileFirst Server is using hard coded (no-cache) valus in: Expires and Cache-Control headers. Additionally any cache along the way MAY or MUST NOT feel responsible for caching. cache-control, but what does it do with the date header?! Luckily Akamai wrote a very nice blog post on how to get more information on It is this process that increasing the s-maxage header prevents (discussed below). " DNS" means Domain Name System. how should cache control be set in the requests. 7 is the actual Akamai server IP that responded to the request. The files themselves are very large 10GB+ and the client uses range requests to chunk the downloads to improve performance and provide realistic download restart points