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Varnish Cache

Varnish is a powerful, flexible HTTP accelerator that speeds up web applications by caching content and optimizing delivery.

Web development Networking Performance / optimization

’05 ’10 ’15 ’20 ’25

Posts: 297 from 1 Jan 2001 to 23 Sep 2026
Posting: about daily (153 in the last year)
Kind: project news
Feed: https://www.varnish.org/index.xml

2026 147

23 SepReleases
16 SepChanges in Varnish Cache 9.1
16 SepUpgrading to Varnish Cache 9.1
16 SepVSV00020 VCL string methods workspace overflow
18 MayVSV00019 Varnish Cache HTTP/2 parsing deficiency
16 AprHow to configure TLS in Varnish
16 AprPut Varnish on ports 80 and 443
10 AprChange your web server port to run Varnish on the same server
17 Marextra modules and tooling
16 MarAchieving a high hitrate
16 MarVcl example acls
16 MarAdding WebSockets support
16 MarAltering the backend response
16 MarBackend servers
16 MarBuilt-in VCL
16 MarChanges in Varnish 4.1
16 MarChanges in Varnish 5.0
16 MarChanges in Varnish 5.1
16 MarChanges in Varnish 5.2
16 MarChanges in Varnish 6.0
16 MarChanges in Varnish 6.1
16 MarChanges in Varnish 6.2
16 MarChanges in Varnish 6.3
16 MarChanges in Varnish 6.4.0
16 MarChanges in Varnish 6.5.0
16 MarChanges in Varnish 6.6
16 MarChanges in Varnish 7.0
16 MarChanges in Varnish 7.1
16 MarChanges in Varnish 7.2
16 MarChanges in Varnish 7.3
16 MarChanges in Varnish 7.4
16 MarChanges in Varnish 7.5
16 MarChanges in Varnish 7.6
16 MarChanges in Varnish Cache 9.0
16 MarChanges in Varnish-Cache 7.7
16 MarChanges in Varnish-Cache 8.0
16 MarCLI - bossing Varnish around
16 MarCompression
16 MarContent composition with Edge Side Includes
16 MarDefining backend servers in VCL
16 MarDevice detection
16 MarGetting help with Varnish Cache?
16 MarGrace mode and keep
16 MarHashing
16 MarIntroduction: how does Varnish work?
16 MarLogging in Varnish
16 MarManipulating request headers in VCL
16 MarNow what?
16 MarOlder Varnish HTTP Cache news
16 MarParameters
16 MarPeculiarities
16 MarPurging and banning
16 MarReporting and statistics
16 MarRequest and response VCL objects
16 MarRequired command line arguments
16 MarSecurity first
16 MarSeparate VCL files
16 MarShell Tricks
16 MarSizing your cache
16 MarStarting and running Varnish
16 MarStarting Varnish
16 MarStatistics
16 MarStorage backends
16 MarThe Big Varnish Picture
16 MarTroubleshooting Varnish
16 MarUpgrading to Varnish 4.0
16 MarUpgrading to Varnish 4.1
16 MarUpgrading to Varnish 5.0
16 MarUpgrading to Varnish 5.1
16 MarUpgrading to Varnish 5.2
16 MarUpgrading to Varnish 6.0
16 MarUpgrading to Varnish 6.1
16 MarUpgrading to Varnish 6.2
16 MarUpgrading to Varnish 6.3
16 MarUpgrading to Varnish 6.4.0
16 MarUpgrading to Varnish 6.5.0
16 MarUpgrading to Varnish 6.6
16 MarUpgrading to Varnish 7.0
16 MarUpgrading to Varnish 7.1
16 MarUpgrading to Varnish 7.2
16 MarUpgrading to Varnish 7.3
16 MarUpgrading to Varnish 7.4
16 MarUpgrading to Varnish 7.5
16 MarUpgrading to Varnish 7.6
16 MarUpgrading to Varnish Cache 9.0
16 MarUpgrading to Varnish-Cache 7.7
16 MarUpgrading to Varnish-Cache 8.0
16 MarUsing inline C to extend Varnish
16 MarVarnish 5.0 Release Note
16 MarVarnish and Website Performance
16 MarVarnish Command Line Interface
16 MarVarnish Processing States
16 Marvarnish-counters
16 Marvarnishadm
16 Marvarnishd
16 Marvarnishhist
16 Marvarnishlog
16 Marvarnishncsa
16 Marvarnishstat
16 Marvarnishtest
16 Marvarnishtop
16 MarVcl
16 MarVCL - Varnish Configuration Language
16 MarVCL Examples
16 MarVCL Syntax
16 MarVCL-backends
16 MarVCL-probe
16 MarVCL-steps
16 MarVCL-Variables
16 MarVCLI protocol - Scripting the CLI interface
16 MarVEXT - Varnish Extensions
16 MarVMOD - Varnish Modules
16 MarVMOD blob - Utilities for the VCL blob type, encoding and decoding
16 MarVMOD cookie - Varnish Cookie Module
16 MarVMOD directors - Varnish Directors Module
16 MarVMOD h2 - Module to control the built-in HTTP2 transport
16 MarVMOD proxy - Varnish Module to extract TLV attributes from PROXYv2
16 MarVMOD purge - Varnish Purge Module
16 MarVMOD std - Varnish Standard Module
16 MarVMOD unix - Utilities for Unix domain sockets
16 MarVMOD vtc - Utility module for varnishtest
16 MarVmod_Math
16 MarVsl
16 Marvsl-query
16 MarVSM: Shared Memory Logging and Statistics
16 MarVSV00001 DoS vulnerability
16 MarVSV00002 Data leak - ‘-sfile’ Stevedore transient objects
16 MarVSV00003 DoS attack vector
16 MarVSV00003 DoS attack vector VCL mitigation
16 MarVSV00004 Workspace information leak
16 MarVSV00005 Varnish HTTP Proxy Protocol V2 Denial of Service
16 MarVSV00006 varnish-modules Denial of Service
16 MarVSV00007 Varnish HTTP/2 Request Smuggling Attack
16 MarVSV00008 Varnish HTTP/1 Request Smuggling Vulnerability
16 MarVSV00009 Varnish Denial of Service Vulnerability
16 MarVSV00010 Varnish Request Smuggling Vulnerability
16 MarVSV00011 Varnish HTTP/2 Request Forgery Vulnerability
16 MarVSV00012 Base64 decoding vulnerability in vmod-digest
16 MarVSV00013 Varnish HTTP/2 Rapid Reset Attack
16 MarVSV00014 Varnish HTTP/2 Broke Window Attack
16 MarVSV00015 Varnish HTTP/1 client-side desync vulnerability
16 MarVSV00016 Request Smuggling Attack
16 MarVSV00017 Varnish HTTP/2 Made You Reset Attack
16 MarVSV00018 Varnish Cache absolute form parsing deficiency
16 MarVtc
16 MarVTLA - Varnish Three Letter Acronyms
16 MarWriting a Director

2025 19

12 DecDocker install guide
12 DecKubernetes install guide
12 DecDebian and Ubuntu install guide
12 DecRed Hat Enterprise Linux and compatible distributions install guide
12 DecWhat is Varnish Cache?
12 DecDocumentation
15 SepVarnish Cache 8.0.0
20 AugVarnish Cache 6.0.16
20 AugVarnish Cache 7.6.5
20 AugVarnish Cache 7.7.3
13 AugVarnish Cache 6.0.15
13 AugVarnish Cache 7.6.4
13 AugVarnish Cache 7.7.2
12 MayVarnish Cache 6.0.14
12 MayVarnish Cache 7.6.3
12 MayVarnish Cache 7.7.1
9 MayHands-on varnishtest
18 MarVarnish Cache 7.6.2
17 MarVarnish Cache 7.7.0

2024 11

8 NovVarnish Cache 7.6.1
13 SepVarnish Cache 7.6.0
18 JunGenerating Varnish access logs with varnishncsa
29 MayVSL cheatsheet
17 MayCaching POST requests in Varnish
17 MayConfiguring Varnish systemd services
28 MarLogging cache hits and misses
18 MarVarnish Cache 6.0.13
18 MarVarnish Cache 7.3.2
18 MarVarnish Cache 7.4.3
18 MarVarnish Cache 7.5.0

2023 8

5 DecMixed content and ERR_TOO_MANY_REDIRECTS errors in WordPress when using Varnish
13 NovVarnish Cache 6.0.12
13 NovVarnish Cache 7.3.1
13 NovVarnish Cache 7.4.2
20 SepVarnish Cache 7.4.1
15 SepVarnish Cache 7.4.0
8 AugVarnishlog: measure your Varnish cache performance
15 MarVarnish Cache 7.3.0

2022 12

12 OctVarnish Cache 6.0.11
11 OctVarnish Cache 7.2.1
10 OctVarnish Cache 7.1.2
15 SepVarnish Cache 7.2.0
5 AugVarnish Cache 7.0.3
5 AugVarnish Cache 7.1.1
22 MarAvoiding HTTP to HTTPS redirect loops in Varnish
15 MarVarnish Cache 7.1.0
12 JanVarnish Cache 6.0.10
12 JanVarnish Cache 6.6.2
12 JanVarnish Cache 7.0.2
4 JanTroubleshooting Varnish

2020 8

2019 9

2018 6

2017 20

2016 7

2015 2

23 MarVarnish Cache 3.0.7
19 FebVarnish Cache 4.0.3

2014 4

2013 2

2 DecVarnish Cache 3.0.5
17 JunVarnish Cache 3.0.4

2012 1

20 AugVarnish Cache 3.0.3

2011 4

2010 4

2009 3

2008 1

15 OctVarnish Cache 2.0

2007 4

2006 1

20 SepVarnish Cache 1.0

2001 2

1 JanObject lifetimes: TTL, Grace, Keep
1 JanVarnish monitoring