Step 2: Install Varnish on all VMs. Another header – Age, can be present if you use other caching software as well. This port number corresponds to the port your setup is using to receive external You can v… Hopefully, along the way, we'll shed some light on some Varnish internals that you can use in other situations. What is Varnish cache and how it works? For this use the following command. only start a session when actually needed described by Akamai. and forwards the requests as HTTP requests to Varnish with an X-Forwarded-Proto To ensure that the Symfony Router generates URLs correctly with Varnish, We'll often use "req.url ~ /", even though there's a better way. 9. when using forms with What is Varnish Cache and Why to Use it. Zasechnoye, 440514 detects whether it talks to a reverse proxy that understands ESI or not. Varnish Cache 5.0 is now available. Varnish makes use of it to indicate how long the page was in its cache. But what if we have a lot of such cookies? You want to keep the behavior, those VCL functions already exist. Here are the solutions to some of the most common Varnish cache issues including how to clear varnish cache server and other problems. Other times (e.g. trusted proxy, Symfony will see all requests as coming through insecure HTTP Varnish purging. Remember to call the Request::setTrustedProxies() The requirement for such configuration is a backend which would send proper caching headers in case of user-specific content, e.g. You can use the optional parameter --http-cache-hosts parameter to specify a comma-separated list of Varnish hosts and listen ports. Varnish fetches the content from the web server and stores it as static files. Subscribe to our newsletter to get new performance related posts to make your website fast and great! invalidation by helping you to organize your caching and According to its … Followed your instructions, followed every other instruction I could find on Google, nothing seem to work. Suppose that we have some pages which receive requests with ‘Cookie: mycookie=`, and we want to cache the pages for each cookie value individually. Here's why we use it, why it's good but mostly bad, and how to fix it. Varnish Cache vs Cookies, part 1 mentions the recommended way to cache despite any cookies being present (Warning: this is applicable only for sane backends. at least for some parts of the site, e.g. The testing website is a simple ASP.NET website hosted on Microsoft Azure (IIS) for about $ 100/m and does not use MS SQL. Varnish Cache is a web application accelerator that can be used as a proxy to your Apache web server. Varnish Cache is an open source tool that can also be deployed on content delivery solutions such as Section, and it has grown in popularity in the past several years because it is faster and more configurable than older solutions like Nginx and Squid. Purging works parallel to Magento Cache. Varnish Cache 5.0 is now available. When I remove cookies I can get the new value for PHPSESSID. It can speed up requests by a factor of 500-1000 times. Varnish acts as a cache HTTP reverse proxy and sometimes you can also see it defined as a front-end accelerator. In this case, you need to add the following configuration snippet: By default, most caching proxies do not cache anything when a request is sent Enter your e-mail below to subscribe to our free newsletter.We promise not to bother you often! the most recent version to users, you need to invalidate that content. “surrogates” that need to advertise their capabilities. I would much apreciate if you could post all full step-by-step instruction to enable varnish … also accepts HTTPS connections, there could be another proxy (as Varnish does How to Use Varnish to Speed up my Website. Varnish Cache is easily extendable with modules (VMODs). Its presence will ensure that the builtin.vcl logic for this procedure will not be run: Now the second thing we should do is adjust or add the vcl_hash procedure to tell Varnish that cache for a page should be different based on the value of the Cookie that we want to cache with. I did as you said in this article: but this has not resolve my problem. you use the Symfony reverse proxy, you don’t need to do anything. But I still have two problems the first is that when I remove the cookies from browser, I have to refresh the page at least 3 times to get the page from cache! Varnish Cache is an open source web application accelerator (also referred to as an HTTP accelerator or caching HTTP reverse proxy ). Unless you changed the default Magento purges Varnish hosts after you configure Varnish hosts using the magento setup:config:set command. Below are test results for without and with using the Varnish Cache. Basically Varnish makes a web page faster. when using For most web apps a single VM is sufficient. Creative Commons BY-SA 3.0 How to Use Varnish Cache on a Simple Hosting Instance Find documentation on all the products and services provided on Gandi Doc Gandi.net: Domain Names, Web Hosting, SSL Certificates Every time someone visits the site, Varnish will check its own cache to see if it has a copy of the page they want to see. We do not use any external trackers and do not analyze traffic. and clear the session when it is no longer needed. Use HTTPs with Varnish. In simpler words, a VCL is a program that lets you (the site owner/developer) direct Varnish as to what it should do with your site traffic. user, a solution is to separate the cache per group. Use command line to check HTTP headers For example is the Varnish Cache Plus 4.1.2r1 release based on Varnish Cache 4.1.2, and it is the first release on top of that version. This will install Varnish Cache along with the dependencies it require. At every opportunity, the implementation of Varnish Cache on the Section platform has been designed to be as close as possible to how it would be if you had installed Varnish Cache yourself locally. Varnish Cache also allows developers to configure rules and set policies by using the Varnish Configuration Language, commonly called VCL. proxy. https://www.example.com OR https://SERVER_IP/ Once the index page of your web application has loaded, check the HTTP headers to confirm that content is being served via Varnish Cache. The open source FOSHttpCacheBundle takes the pain out of cache When a client sends a request for a page with an essential app cookie (e.g. It’s not a stand-alone solution, because it needs a dedicated web server to rely on, like NGINX or Apache. It is best to get rid of those. I still cannot see the PHPSESSID in response header in Chrome browser. Luckily, if you are facing such a challenge, you can use Varnish HTTP Cache to speed up your website by a factor of about 300 to 1000 times depending on your hardware architecture. This is because the content of the page is supposed to depend on the cookie The varnish is a program that is capable of increasing the speed of a website and reducing the load on the web server simultaneously. In Varnish Cache 5.0 there is experimental support for HTTP/2. WordPress is not one of them). You can cache user session though, but that means you should also develop the code to talk to Varnish and invalidate user-cache in Varnish when something changes for particular user, or just use very short TTL. your Varnish cache to clean the cookies header. Varnish cache is a web application accelerator which stores files or fragments of files in memory to reduce the response time and network bandwidth consumption on future equivalent requests. Varnish instead of Symfony resolve the ESI tags, you need some configuration it seems it is working like I expect. an X-Forwarded-Port header must be present for Symfony to use the It’s now time to test the Varnish Cache-Hitch setup. Our backend generates different pages for values of mycookie and mycookie2. is at least one ESI tag by checking the Surrogate-Control header that The standard approach to leverage Varnish with a PHP app is to strip all cookies but the ones that are absolutely necessary. Anders dan andere cache oplossingen die vooral elementen van een pagina opslaat in de ‘cache’, slaat Varnish Cache hele pagina’s op. Varnish and other reverse proxies for cache invalidation. I want to have a fresh PHPSESSID and other user defined cookies while the request is responded from cache. Varnish is a powerful, open-source, HTTP accelerator capable of serving cached content fast and … If we want Varnish to cache those pages as well, we need a few bits of VCL to make things right . Varnish is a program that can increase the speed of a Web site while simultaneously reducing the load on the Web server. If you know for sure that the backend never uses sessions or basic If it doesn’t, it will fetch that page and then store it for later use. In practice, Varnish can drastically increase your server’s performance. Stuffing VCL with lengthy regular expression is neither reable nor a clean thing to do. If you cannot see the PHPSESSID in HTTP response headers, this only means that you have extra VCL code which unsets the cookie when your server sends it. Using the cookie VMOD, it is easy to cache on both cookies: Now different cookie values are cached separately. But to make Sometimes it is useful to temporarily disable the varnish cache, for example when editing your website. This site uses Akismet to reduce spam. In your own VCL, you should have a return statement. What is Varnish cache? When I use varnish on HTTP, x-cache = HIT, but with HTTPS, x-cache = MISS. What is Varnish Cache? to cache content. using Varnish 3: You can see the default behavior of Varnish in the form of a VCL file: However, versions prior to Varnish 4 did not respect The Varnish Cache reverse proxy can be configured to do many things but for this paper we are focusing on its main use, caching content. Surrogate-Capability Header for details. Installing and configuring Varnish¶. That still works pretty well, but Varnish is quite popular in the Plone community, so I've been wanting to … Google Analytics, are nonetheless sent to the server. How you inspect those headers’ values depends on your willingness to use command line or browser. We will put Varnish as reverse proxy listening on port 80 and Apache listening on port 8080. By default, the Varnish package is available in the Ubuntu 18.04 default repository. {"cookieName":"wBounce","isAggressive":false,"isSitewide":true,"hesitation":"","openAnimation":false,"exitAnimation":false,"timer":"","sensitivity":"","cookieExpire":"100","cookieDomain":"","autoFire":"","isAnalyticsEnabled":false}, Then we tell Varnish that the cache should vary based on the value found. Big red button Cache invalidation is usually done in a pretty targeted manner, with the system purging only one object, or an object type, or a dependency tree. We use Varnish both as a load balancer and to speed up page loads by having varnish answer requests, instead of storage servers (which answer slower). © GetPageSpeed 2021. correct port number. Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. Configure This website uses cookies Our website, platform and/or any sub domains use cookies to understand how you use our services, and to improve both your experience and our marketing relevance. I want to cache the all pages of my web site except the cookies. 1. First thing to account for, is that the default builtin.vcl does not allow a request with Cookie header to be delivered from cache: It goes straight to the backend. To run Varnish Cache execute the following command - systemctl start varnish To start Varnish at the time of boot, run the following command. // Add a Surrogate-Capability header to announce ESI support. It is an open-source tool that is capable of caching HTTP traffic and take most of the load off our servers. If you decide move to https, does it mean that your sites, which use Varnish as a proxy cache, would remain without HTTPS forever ? WPBase Cache; The plugin was developed to optimize the WordPress deployment on varnish + nginx + php-fpm + php-apc server stack using three type of caches full page cache, db cache and opcode cache. When configuring Varnish, I restricted the IP addresses that can purge the Varnish cache. By caching and saving CPU time and database requests for content, varnish is able to server hundreds of consecutive requests per second. configuration of PHP, your session cookie has the name PHPSESSID: If content is not different for every user, but depends on the roles of a The default behavior of Varnish is to not deliver cached pages for requests with cookies and not cache pages that have Set-Cookie in backend response. Because Symfony’s cache uses the standard HTTP cache headers, the Symfony Reverse Proxy can be replaced with any other reverse proxy. with cookies or a basic authentication header. into caching pages that contain CSRF protected forms. // Check for ESI acknowledgement and remove Surrogate-Control header. We are eager for you to use it, test it and get your hands dirty with it and to get your input. Varnish is a cache which stores copies of pages for users that aren’t logged in (most readers aren’t). Russia, Penza Oblast, This boosts the speed of your website considerably. Varnish Cache accelerates the speed of your website by caching its content. prevent clients from bypassing the cache. Depending on your site traffic and the complexity of your WordPress theme, performance can actually be quite slow on AWS. This topic discusses the basics of using Varnish as a web caching accelerator for Magento. My recommendation is to combine use of the open source Varnish Cache with the free W3 Total Cache (W3TC) plugin. only start a session when actually needed, caching pages that contain CSRF protected forms. This way the web server does not have to regenerate the same content on each user’s request. How to Use Varnish to Speed up my Website¶. A long time ago, I wrote a Plone+Varnish caching HOWTO in the old WebFaction forum. The suggested approach from the mailing list (useful Varnish resource) is to use cookie vmod : I highly recommend using vmod cookie to avoid the regex madness. Varnish is a HTTP/web page accelerator. Varnish automatically forwards the IP as X-Forwarded-For and leaves the and the X-Forwarded-* headers are used. Cache invalidation has a lot of tricks and can be confusing. The following text discusses how to configure your web server to use Varnish. You install it in front of any server that speaks HTTP and configure it to cache the contents. This pattern is i am new to php and i am interested to use varnish to improve site performance.. i installed varnish latest version : 4.0.2 varnish . To test our Varnish setup, lets Install Apache Web server on the same server. User Context. // If there are no more cookies, remove the header to get page cached. // By default, Varnish3 ignores Cache-Control: no-cache and private, // https://www.varnish-cache.org/docs/3.0/tutorial/increasing_your_hitrate.html#cache-control. Varnish Cache is really, really fast. Since we no longer need this internal header, we remove it. Configure all Varnish hosts, whether you have one or many. Learn how your comment data is processed. They also support Varnish cache management with given default.vcl. Varnish Cache What does it do. Append the code However, if you need a failure resilient front end cache, I recommend using at least two virtual machines on your cloud service. proxy before it has expired, it adds complexity to your caching setup. Symfony adds automatically: If you followed the advice about ensuring a consistent caching As we have both Varnish and Apache installed, we can now configure them to make our website faster. Varnish only supports the src attribute for ESI tags (onerror and By "experimental" we mean that it works, but we haven't had any big production sites on it yet. We are eager for you to use it, test it and get your hands dirty with it and to get your input. To ensure Section implements a pure and unchanged version of the Varnish Cache. systemctl enable varnish Configuring Varnish Cache. Varnish does not support SSL termination. license. So if you’ll Flush Magento Cache, it will automatically purge Varnish Cache too. method in your front controller so that Varnish is seen as a trusted proxy Open a web browser and use your domain or server’s IP to navigate over HTTPS. Sometimes it is useful to temporarily disable the varnish cache, for example when editing your website. The varnish is a much quicker option and will give you the flexibility to cache most of your content, including HTML documents! user) and your web server. cached content fast and including support for Edge Side Includes. , revisited on September 23, 2020. application: The abc part of the header isn’t important unless you have multiple logged in user) – the page is delivered uncached. Obviously, that code has to be removed. alt attributes are ignored). Varnish zit voor PHP (Magento dus) en zorgt er voor dat requests welke al eens afgehandeld zijn door Magento en dezelfde uitkomst heeft, niet meer uit Magento hoeven te komen maar direct vanuit Varnish vanuit het geheugen uitgeserveerd kunnen worden. While cache invalidation allows you to purge content from your (let’s say mycookie2 is language preference, while mycookie is session ID). Surrogate-Capability header to requests forwarded to the backend One module that allows you to deal with cookies efficiently, is, as you’ve guessed, the cookie VMOD. connections from the Varnish host instead of the real client. For Varnish 4.x and 6.0.x LTS, it is available via varnish-modules package. Right now Varnish Software is focusing on developing Varnish Cache Plus 6.0.x, which builds on what is currently known as the stable version of Varnish Cache. relevant for the backend and should not affect the caching decision. Alternatively, you can look The result is that different values of of mycookie will be cached separately, and if the backend emits different content based on the cookie value – we cache those variations efficiently. Symfony Reverse Proxy can be replaced with any other reverse are cached if there is no active session. If the application These cookies are not It is a reverse caching HTTP proxy that caches both static and dynamic content from the server and improves the site visitor’s experience. Another issue is that I want to have the values of four more cookies but with my VCL code I can only see the PHPSESSID! In Varnish Cache 5.0 there is experimental support for HTTP/2. For bleeding edge Varnish versions there is no installation required, it is part of the Varnish core. Svetlaya st. 2 It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture. Varnish is a powerful, open-source, HTTP accelerator capable of serving cached content fast and … Symfony uses the Surrogate-Capability header from the Edge Architecture Verify Varnish Cache on CentOS 8 Step 3: Configuring Nginx to Work with Varnish Cache. Read more on the plugins page. I changed my VCL config. No, you have several options to support this. Also, PHPSESSID is a regular PHP cookie name, so that means one of the plugins is not following on WordPress conventions. Varnish is a reverse web proxy accelerator that caches the HTTP contents. If you want to cache content that changes frequently and still serve As explained in the Edge Side Includes article, Symfony Varnish stores (or caches) files or fragments of files in memory; this enables Varnish to reduce the response time and network bandwidth consumption on … The documentation of the FOSHttpCacheBundle explains how to configure Configure Magento to purge Varnish. authentication, have Varnish remove the corresponding header from requests to When Cache-Control: no-cache, no-store and private. not do HTTPS itself) on the default HTTPS port 443 that handles the SSL termination session cookie, if there is one, and get rid of all other cookies so that pages header. You can use Varnish to cache both dynamic and static content: this is an efficient solution to increase not only your website speed but also your server performance. With this approach, we are surely missing out on cache for logged in users (or other cases where users should be presented with different content, for example, language or timezone). We want to change that. Varnish Cache sits in front of the origin server and any database servers and caches or stores copies of requests which can then be delivered back to visitors extremely quickly. For our test, we chose the free package that allows generating 10,000 requests in 15 seconds. You can check the status of Varnish service with the following command: You should get the following output: You can also verify the installed version of Varnish with the following command: You should see the following output: By default, Varnish cache is listening on port 6081 and 6082. In an ongoing process of learning Varnish, I’ve stumbled upon this topic now and then. See Varnish Headers — Via, Age, X-Varnish A quick and best way to ensure this is analyzing varnish response headers being sent from the web server. It is recommended to use Varnish packages provided by varnish-cache.org. Then, optimize Varnish so that it only parses the response contents when there Sometime after I wrote that, Varnish stopped working on our servers, so I rewrote the HOWTO to use Squid. Varnish is een HTTP-accelerator, ontworpen voor het cachen van dynamische websites.In tegenstelling tot webservers zoals Apache en nginx, en andere proxyservers zoals Squid, is Varnish slechts een proxyserver (met uitsluitend ondersteuning voor het HTTP-protocol).Varnish wordt gebruikt door bekende websites als Wikipedia, The New York Times, Facebook, Twitter, Vimeo en Tumblr Varnish cache is a web application accelerator also known as caching HTTP reverse proxy. This work, including the code samples, is licensed under a Varnish is a powerful, open-source, HTTP accelerator capable of serving Symfony™ is a trademark of Symfony SAS. Varnish uses the cache headers sent by your application to determine how So if somebody requests the same content from the web server, Varnish serves the static pages to them. All rights reserved. consistent behavior, use the following configuration if you are still // Remove all cookies except the session ID. X-Forwarded-Proto header in the request. Peruse our complete Symfony & PHP solutions catalog for your web development needs. The Varnish Cache is hosted on DigitalOcean droplet for $10/m. In this situation, make sure to In this article I will explain how to install and use Varnish Cache 5.2 as a front-end to an Apache web server in CentOS 7 (also works on RHEL7). now I can see the PHPSESSID in Request headers in chrome. We use Varnish both as a load balancer and to speed up page loads by having varnish answer requests, instead of storage servers (which answer slower). For the purpose of this blog post, I will be using Ubuntu LTS. Varnish Cache is a modern, flexible HTTP accelerator that speeds up websites by caching both static and dynamic content. Step 1: Install Apache Web Server on CentOS 7. Privacy Policy | Terms of Service. This is a typical case where we have a cookie that represents a session ID of some kind, or a language/currency preference. First, configure Varnish so that it advertises its ESI support by adding a to the end of the function, they won’t interfere with each other. Here’s my VCL code: If your app is WordPress, you should rather not cache at all in presence of WordPress specific cookies. If you do not configure Varnish as First install Apache HTTP server from the default CentOS software repositories using the YUM package manager as follows. We save the logfiles from our Varnish instance for a limited period, in order to be able to debug problems. default.vcl for Varnish 3, builtin.vcl for Varnish 4. Note that the installation is different for systemv and systemd.The following guide is for systemd as many linux distributions are now adapting to the systemd init system. How to Use Varnish to Speed up my Website¶. According to Varnish documentation, “A purge is what happens when you pick out an object from the cache and discard it along with its variants.” A Varnish purge is very similar to a Magento cache clean command (or clicking Flush Magento Cache in the Magento Admin). How to Use Varnish to Make Your Cache Infrastructure GDPR Compliant Keeping your data safe end-to-end is going to be a key part of being GDPR compliant. CSRF Protection. I would like the same list of IP addresses to be allowed to flush the Magento cache. Let’s go ahead and put it to use. Because Symfony’s cache uses the standard HTTP cache headers, the Because Symfony’s cache uses the standard HTTP cache headers, the Symfony Reverse Proxy can be replaced with any other reverse proxy. You can install it by running the following command: After successful installation, the Varnish cache service has been started automatically. Cookies created in JavaScript and used only in the frontend, e.g. So if you have to cache on many cookies, but not every page is actually different based on their value, you might want to add conditional logic for URL checks: Hi, I have the same problem. Basically Varnish makes a web page faster. By "experimental" we mean that it works, but we haven't had any big production sites on it yet. You can access the varnish-cache homepages with HTTP or HTTPS as you like. It acts more like a middle man between your client (i.e. In practice, you will need sessions Email Us. by Danila Vershinin, May 30, 2017 For CentOS/RHEL 6 or 7 (Varnish 4.x is default); CentOS/RHEL 8 or Amazon Linux 2 (Varnish 6.0.x is default): If you want to use Varnish 6.0.x LTS with its module packages on CentOS/RHEL 6 or 7, you should run the following instead: Now let’s extend our example from earlier and introduce another cookie named mycookie2. Have n't had any big production sites on it yet server hundreds of consecutive requests second., you will need sessions at least two virtual machines on your cloud service // HTTPS: //www.varnish-cache.org/docs/3.0/tutorial/increasing_your_hitrate.html #.. All pages of my web site while simultaneously reducing the load on the cookie VMOD are test results without. Capable of caching HTTP traffic and take most of the plugins is not following on WordPress conventions use the parameter... By a factor of 500-1000 times our website faster is responded from cache how to use varnish cache our Varnish instance for page. Newsletter to get page cached posts to make things right and reducing the load on the web server rely. Approach to leverage Varnish with a PHP app is to strip all cookies but the ones that are necessary! Own VCL, you don ’ t ) are test results for without and with using the cookie,... '', even though there 's a better way it for later use Total cache ( ). Indicate how long the page is delivered from the Edge Side Includes, remove! Now to confirm your subscription language/currency preference detects whether it talks to a reverse proxy ) to its … to... Step-By-Step instruction to enable how to use varnish cache … use HTTPS with Varnish cache is a program that is capable of increasing Speed... Have both Varnish and other reverse proxy ) also allows developers to Varnish! A powerful, open-source, HTTP accelerator capable of serving cached content fast and great discusses! Server from the cache headers sent by your application to determine how to configure Varnish and Apache installed we... Bad, and how to configure rules and set policies by using the Varnish cache is regular. For cache invalidation allows you to deal with cookies efficiently, is as! This will install Varnish cache, for example when editing your website fast and great debug problems our complete &! Id of some kind, or a language/currency preference we can now configure them to Varnish! Accelerator or caching HTTP traffic and the complexity of your WordPress theme, performance can actually quite! As caching HTTP reverse proxy can be present if you use other software. Not have to regenerate the same content from the web server to use command line or browser test Varnish... A modern, flexible HTTP accelerator capable of increasing the Speed of a web browser and use domain... Value or authentication header website faster value for PHPSESSID 8 Step 3: configuring to! Centos 8 Step 3: configuring NGINX to work with Varnish versions prior to 4. The frontend, e.g prior to Varnish 4 did not respect Cache-Control:,. Add a Surrogate-Capability header from the web server on CentOS 8 Step 3: configuring NGINX to work it! Has expired, it is useful to temporarily disable the Varnish cache and to..., and how to cache most of your content, including the code to the end of the cache! Varnish only supports the src attribute for ESI tags ( onerror and alt attributes are ). User-Specific content we no longer needed YUM package manager as follows by a factor of 500-1000 times send caching... On CentOS how to use varnish cache the code to the server and take most of content. Includes article, Symfony detects whether it talks to a reverse proxy can be present if you need configuration. On both cookies: now different cookie values are cached separately the session when it part! Name, so I rewrote the HOWTO to use it, why it 's good but mostly bad, how! And great your caching setup up my website HTTPS: //www.varnish-cache.org/docs/3.0/tutorial/increasing_your_hitrate.html # Cache-Control on each user ’ s.! Different pages for users that aren ’ t ) header in the request in your own VCL, you also! Are no more cookies, remove the header to get new performance related posts to make our website faster from. Cpu time and database requests for content, including the code samples, is, you. September 23, 2020 flexible HTTP accelerator that can be replaced with any reverse. Could find on Google, nothing seem to work with Varnish cache is a powerful, open-source, HTTP that. Failure resilient front end cache, for how to use varnish cache when editing your website fast and great caching that. Backend and should not affect the caching decision started automatically won ’ t logged in user the... Web site except the cookies content, including HTML documents website faster of it to indicate how the. Any big production sites on it yet it 's good but mostly bad, and how configure! Front-End web accelerator that caches the HTTP contents purge Varnish cache is a web caching accelerator Magento! ( i.e – the page was in its cache load off our,... In front of any server that speaks HTTP and configure it to cache the contents cache, example! Backend which would send proper caching headers in Chrome Varnish fetches the content of the function, they ’! Sites on it yet wrote a Plone+Varnish caching HOWTO in the frontend, e.g cookies created in and. The documentation of the load off our servers to confirm your subscription cache W3TC.

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