Varnish 
Varnish is used by 1.37% of sites
Official Website
http://www.varnish-cache.orgCategory
Caching
Varnish is an open-source web application accelerator and caching HTTP reverse proxy. It is designed to improve the performance and scalability of websites by caching content and serving it directly from memory, reducing the load on the backend servers.
Here are the key features and functions of Varnish:
HTTP Reverse Proxy: Varnish acts as a reverse proxy server, sitting between the client and the backend web server. When a client requests content, Varnish intercepts the request and forwards it to the backend server on behalf of the client. The response from the server is then cached by Varnish and subsequent requests for the same content can be served directly from the cache.
Content Caching: Varnish caches the content of web pages, images, and other static or dynamic resources in memory. By serving content from the cache, Varnish reduces the response time and improves the overall performance of the website. Caching is especially effective for static content that doesn't change frequently.
HTTP Acceleration: Varnish optimizes the delivery of web content by implementing various techniques, such as request and response filtering, compression, and pipelining. It minimizes network latency, reduces server load, and enhances the user experience by delivering content faster.
Edge Side Includes (ESI): Varnish supports Edge Side Includes, which allows dynamic content to be included within cached pages. This enables selective caching of different parts of a webpage and the ability to update dynamic content within the cached page without invalidating the entire cache.
Cache Invalidation: Varnish provides mechanisms to invalidate or refresh the cache when the underlying content changes. This ensures that users receive the most up-to-date content by bypassing the cache for modified resources.
Load Balancing: Varnish can be used as a load balancer, distributing client requests across multiple backend servers based on various algorithms such as round-robin, least connections, or client IP. This helps distribute the load evenly among backend servers, improving scalability and reliability.
VCL (Varnish Configuration Language): Varnish is highly customizable through its configuration language called VCL. VCL allows developers to define custom caching rules, handle complex request and response scenarios, and implement advanced caching strategies tailored to specific application requirements.
Logging and Monitoring: Varnish provides logging facilities to track and analyze requests, cache hits, cache misses, and other performance metrics. It also integrates with monitoring tools and metrics systems to monitor the health and performance of the caching infrastructure.
Varnish is widely used by high-traffic websites, content delivery networks (CDNs), and web application providers to improve the scalability and speed of their services. By caching content and serving it directly from memory, Varnish reduces the response time, lowers server load, and enhances the overall user experience.
Here are the key features and functions of Varnish:
HTTP Reverse Proxy: Varnish acts as a reverse proxy server, sitting between the client and the backend web server. When a client requests content, Varnish intercepts the request and forwards it to the backend server on behalf of the client. The response from the server is then cached by Varnish and subsequent requests for the same content can be served directly from the cache.
Content Caching: Varnish caches the content of web pages, images, and other static or dynamic resources in memory. By serving content from the cache, Varnish reduces the response time and improves the overall performance of the website. Caching is especially effective for static content that doesn't change frequently.
HTTP Acceleration: Varnish optimizes the delivery of web content by implementing various techniques, such as request and response filtering, compression, and pipelining. It minimizes network latency, reduces server load, and enhances the user experience by delivering content faster.
Edge Side Includes (ESI): Varnish supports Edge Side Includes, which allows dynamic content to be included within cached pages. This enables selective caching of different parts of a webpage and the ability to update dynamic content within the cached page without invalidating the entire cache.
Cache Invalidation: Varnish provides mechanisms to invalidate or refresh the cache when the underlying content changes. This ensures that users receive the most up-to-date content by bypassing the cache for modified resources.
Load Balancing: Varnish can be used as a load balancer, distributing client requests across multiple backend servers based on various algorithms such as round-robin, least connections, or client IP. This helps distribute the load evenly among backend servers, improving scalability and reliability.
VCL (Varnish Configuration Language): Varnish is highly customizable through its configuration language called VCL. VCL allows developers to define custom caching rules, handle complex request and response scenarios, and implement advanced caching strategies tailored to specific application requirements.
Logging and Monitoring: Varnish provides logging facilities to track and analyze requests, cache hits, cache misses, and other performance metrics. It also integrates with monitoring tools and metrics systems to monitor the health and performance of the caching infrastructure.
Varnish is widely used by high-traffic websites, content delivery networks (CDNs), and web application providers to improve the scalability and speed of their services. By caching content and serving it directly from memory, Varnish reduces the response time, lowers server load, and enhances the overall user experience.
Top Websites using Varnish
- Bounce ratePages / VisitVisit duration
- 1reddit.com
Blocked
reddit is a network of communities where people can dive into their interests, hobbies and passions. there's a community for whatever you're interested in on reddit. - 44.01 4.65 05:30
- 2fandom.com
Just a moment...
The entertainment site where fans come first. Your daily source for all things TV, movies, and games, including Star Wars, Fallout, Marvel, DC and more. - 49.09 4.33 04:35
- 3etsy.com
etsy.com
Find the perfect handmade gift, vintage & on-trend clothes, unique jewelry, and more… lots more. - 39.98 6.09 04:41
- 4websters.com
Webster | Definition of Webster at Dictionary.com
Webster definition, a weaver. See more. - 100.00 3.51 n/a
- 5paypal.com
PayPal Konto | Digitale Mobile Wallet | PayPal DE
Verwende dein PayPal-Konto zum Bezahlen, Geld senden und verwalten. Erstelle ein Händlerkonto für dein Unternehmen. Nutze mobiles Bezahlen und Ratenkauf. - 21.91 4.81 02:27
- 6spotify.com
Spotify - Web Player: Music for everyone
Spotify is a digital music service that gives you access to millions of songs. - 45.42 4.15 05:16
- 7espn.com
ERROR: The request could not be satisfied
WWE on ESPN.com: latest news, ***ysis, schedule, and highlights from ESPN - 44.27 3.35 05:35
- 8instructure.com
Instructure: Leading EdTech for K–12, Higher Ed & Business
Empower learning with Instructure’s LMS and edtech solutions for K–12, higher education, and businesses. Discover Canvas, Impact, and Mastery to drive success. - 19.87 8.09 09:37
- 9fetlife.com
Checking if the site connection is secure...
- 20.01 18.12 11:35
- 10bbc.com
BBC Home - Breaking News, World News, US News, Sports, Business, Innovation, Climate, Culture, Travel, Video & Audio
Visit BBC for trusted reporting on the latest world and US news, sports, business, climate, innovation, culture and much more. - 55.47 2.36 02:38
- 11cnn.com
Breaking News, Latest News and Videos | CNN
View the latest news and breaking news today for U.S., world, weather, entertainment, politics and health at CNN.com. - 58.09 2.08 02:47
- 12pricelline.com
Priceline.com - The Best Deals on Hotels, Flights and Rental Cars. - n/a 5.78 n/a
- 13rightmove.co.uk
Rightmove - UK's number one property website for properties for sale and to rent
UK's number one property website for properties for sale and to rent - 28.41 17.29 07:08
- 14bbc.co.uk
BBC - Home
The best of the BBC, with the latest news and sport headlines, weather, TV & radio highlights and much more from across the whole of BBC Online. - 46.00 3.21 04:19
- 15theinsiders.com
403 Forbidden
Online sports network with the lastest news and recruiting information for high school, college, and professional sports. - 100.00 8.66 n/a
- 16nexusmods.com
Just a moment...
We host 718,556 mods for 3,774 games from 160,244 authors serving 63,607,010 members with 16,955,105,059 downloads to date. We've donated $12,627,219 to our mod authors through Donation Points. If you can mod it, we'll host it. - 22.60 16.13 10:33
- 17priceine.com
Priceline.com - The Best Deals on Hotels, Flights and Rental Cars. - n/a 5.55 n/a
- 18slaypni.github.io
Site not found · GitHub Pages
Page not found · GitHub Pages - n/a 2.38 n/a
- 19mp3.pl
Muzyka - Największe gwiazdy, najnowsze hity
Serwis muzyczny Wirtualnej Polski. Najświeższe informacje ze świata muzyki, premiery płytowe, wywiady, teledyski, baza tysięcy artystów i plyt - 42.86 9.44 06:06
- 20e-***.org
E-*** Galleries - The Free *** Doujinshi, Manga and Image Gallery System
With more than a million absolutely free *** doujinshi, manga, cosplay and CG galleries, E-*** Galleries is the world's largest free *** archive. - 20.33 31.14 09:30
- 21yelp.com
Restaurants, Dentists, Bars, Beauty Salons, Doctors - Yelp
People use Yelp to search for everything from the city's tastiest burger to the most renowned cardiologist. What will you uncover in your neighborhood? - 43.82 4.19 02:07
- 22fastly-insights.com
Fastly Insights
Real user monitoring of network and performance characteristics to help make the internet faster. - 44.45 7.51 06:57
- 23atoiks-games.github.io
Atoiks Games by Atoiks-Games
Web Extra Large Online Virtual Easy Cool Addictive Time-consuming Silly Games (WELOVECATS) - n/a 2.17 n/a
- 24scribd.com
Scribd: Home to the world’s do***ents.
Get to the source. Specialized knowledge on any topic, and answers you won’t find anywhere else. Home to the world’s do***ents, 300M+ and counting. - 61.70 2.96 02:38
- 25rugbyheaven.com
Rugby Union | News, Live Coverage, Results, Fixtures, Tips | Super Rugby, Rugby Championship | The Sydney Morning Herald
The latest Rugby Union news, live coverage, results, fixtures, tips, opinion and ***ysis from the Sydney Morning Herald - 100.00 3.09 n/a
- 26howtotradeonforex.github.io
Fast Scalping Forex Hedge Fund – Another Forex Calendar site - 73.08 1.73 12:35
- 27eclipsesin.github.io
Site not found · GitHub Pages - n/a 0.00 n/a
- 28heroesofthestorm.github.io
Site not found · GitHub Pages
Page not found · GitHub Pages - n/a 0.00 n/a
- 29maimmm.github.io
Do***ent - 72.80 1.77 14:31
- 30urban-dictionary.com
Urban Dictionary, September 30: No-J
someone who didn't do it, but is being pronounced guilty anyway. He is the opposite of OJ, who did it, but got off scott free. - 100.00 1.99 n/a
- 31box.com
Secure, AI-Powered Content Management, Workflow & Collaboration
The intelligent Content Cloud makes it easy to automate workflows, collaborate internally and externally, and protect your sensitive data, all on one platform. - 20.65 11.37 10:34
- 32ny.gov
Just a moment...
Learn about programs and initiatives across New York State. - 41.08 6.74 04:29
- 33su-cs408.github.io
CS 408 Lab & TA Website - 72.80 1.77 14:31
- 34qfusion.github.io
Welcome to Qfusion | qfusion.github.io
qfusion.github.io : - 72.80 1.77 14:31
- 35staterz.github.io
Home | Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your do***ent head meta (for Google search results) and in your feed.xml site description.
Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your do***ent head meta (for Google search results) and in your feed.xml site description. - 72.80 1.77 14:31
- 36quarkiverse.github.io
Quarkiverse.io
Website for quarkiverse.io - 72.80 1.77 14:31
- 37pasifik.github.io
Pasifik.GitHub.io by Pasifik - 72.80 1.77 14:31
- 38jtkyber.github.io
Startup - 73.40 1.74 14:10
- 39tag8x.github.io
tag8x â® Developer
Author: Turgut Alp GemicioÄlu, I've been working in the web field for 6 years and I am trying to develop in many subjects. I also develop my own small ventures in my spare time. By my own definition, I am a variable who likes to improve myself. - 72.80 1.77 14:31
- 40ashkanx.github.io
Ashkan Blog
Hi, My name is Ashkan. I write about Web! - 73.25 1.70 14:42
- 41blackboard.com
Just a moment...
At Anthology, we believe in the power of together. Institutions, educators, and learners with the right technology and the right technology partner have exponentially greater power to succeed. To nurture sustainable career paths. To open doors and create life-changing opportunities around the world. - 22.03 10.17 07:29
- 42ticketmaster.com
Ticketmaster: Buy Verified Tickets for Concerts, Sports, Theater and Events
Buy or sell 2025-2026 NBA basketball game tickets. Find tickets for your favorite NBA games and the NBA Playoffs at Ticketmaster, the Official Ticket Marketplace of the NBA. - 45.60 3.43 02:56
- 43dvbuntu.github.io
About Me - Danielle Van Boxel - 72.80 1.77 14:31
- 44arms-mbon.github.io
Autonomous Reef Monitoring System - 72.80 1.77 14:31
- 45maheshmnj.github.io
Mahesh Jamdade - 72.80 1.77 14:31
- 46taboola.com
Boost your Digital Performance with Taboola Advertising Platform
Reach 600M daily active users and achieve conversions at scale with the world's leading performance platform. - 71.48 1.42 01:14
- 47rugbyheaven.com.au
Rugby News | Rugby Union Latest News, Live Scores, Stats | Rugby Heaven
Coverage on the Super 12 series, Tri-Nations series, the Bledisloe Cup and the Rugby World Cup, along with special features such as live game coverage, interactive tipping, competitions, player commentary, pictures, and online commentary.
Read the latest Rugby Union News & Updates including Ladders, Fixtures, Results, Footy Teams and Players throughout the Rugby Union Season. - n/a 2.52 n/a
- 48jamiewalkrr.github.io
places_project_01
A new Flutter project. - 72.80 1.77 14:31
- 49learn-crypto-trading.github.io
LearnCryptoTrading | Learn Crypto Trading
Resources for learning Chart Patterns, Technical ***ysis, Algorithmic trading, and Fundamental ***ysis. - 73.08 1.73 12:35
- 50fxcm.github.io
Welcome to GitHub Pages | fxcm.github.io - 73.08 1.73 12:35