Using multiple backends in Varnish
Using multiple backends in Varnish
Tutorials
Here you will find a collection of tutorials and VCL examples that cover the most common Varnish use cases. These range from basic installation guides to advanced VCL tutorials.
Backends
Using basic authentication in VCL backend probes
When your backend requires authorized access via basic authentication, you need to configure the health probe for your backend in VCL to support basic authentication.
Cache invalidation
Banning content from Varnish
Use Varnish's ban mechanism to remove cached objects from the cache.
Purging content from Varnish
Use the purge return action in VCL to remove cached objects from the Varnish cache.
Cache invalidation
How to invalidate and purge your cache
cloud
Creating an AWS S3 shield with Varnish Enterprise
How to accelerate AWS S3 delivery and reduce AWS egress charges with an S3 shield powered by Varnish Enterprise.
Running Varnish Enterprise 6 for Red Hat on AWS
Run a Varnish Enterprise 6 EC2 instance on Amazon Web Services using the official machine image for Red Hat
Running Varnish Enterprise 6 for Ubuntu on AWS
Run a Varnish Enterprise 6 EC2 instance on Amazon Web Services using the official machine image for Ubuntu
DNS
DNS based GSLB (Global Server Load Balancer)
This tutorial shows how PowerDNS can be configured as a Global Server Load Balancer in front of a geographically distributed cluster of Varnish nodes.
HTTP
HTTP caching basics
Learn the basics of HTTP caching and learn how to control the behavior of a web cache by using conventional HTTP headers
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http (2)
Avoiding HTTP to HTTPS redirect loops in Varnish
How to avoid HTTP to HTTPS redirect loops in Varnish by creating protocol-based cached variations.
installations
Installing Varnish on Debian
Install Varnish 6.0 LTS on Debian.
Installing Varnish on Alma Linux and Rocky Linux
Install Varnish 6.0 LTS on Alma Linux and Rocky Linux.
Installing Varnish on CentOS
Install Varnish 6.0 LTS on CentOS.
Installing Varnish on Red Hat Enterprise Linux
Install Varnish 6.0 LTS on Red Hat Enterprise Linux
Installing Varnish on Ubuntu
Install Varnish 6.0 LTS on Ubuntu.
Running Varnish on Docker
Run Varnish 6.0 LTS on Docker.
integrations
Caching authenticated Artifactory requests with Varnish Enterprise
Caching authenticated Artifactory requests with Varnish Enterprise using pre-flight authorization requests
Mixed content and ERR_TOO_MANY_REDIRECTS errors in WordPress when using Varnish
Fixing mixed content issues and avoiding the ERR_TOO_MANY_REDIRECTS error in WordPress when using Varnish.
Configuring Varnish for Drupal
Configuring Varnish for Drupal
Configuring Varnish for Magento
Configuring Varnish for Magento
Configuring Varnish for WordPress
Configuring Varnish for WordPress
Configuring Varnish for Adobe Experience Manager
Configuring Varnish for Adobe Experience Manager.
Configuring Varnish for ExpressionEngine
Configuring Varnish for ExpressionEngine.
Configuring Varnish for Sitecore CMS
Configuring Varnish for Sitecore CMS.
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sitecore (1)
Ops
Securing multi-tier Varnish environments
How to make sure certain Varnish tiers are only accessible by other Varnish tiers.
Solutions and use cases
This tutorial shows how to configure Varnish for different use cases.
VSL cheatsheet
varnishlog, varnishncsa and ready-to-use VSL queries
Let's Encrypt with Hitch and Varnish (CentOS7)
Guide to setting up Hitch with automated and free certificates from Let's Encrypt on CentOS7
Monitoring Varnish with Splunk
How to install and configure Varnish, the Splunk Universal Forwarder, and the Splunk indexer to ingest varnishncsa logs into the platform
Generating Varnish access logs with varnishncsa
How to generate NCSA compatible access logs for Varnish with varnishncsa.
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ops (29)
MSE Database Sync
Enabling disk synchronisation of the LMDB database for metadata in Varnish Enterprise's Massive Storage Engine
Configuring Varnish systemd services
Learn how to configure systemd services to manage Varnish.
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ops (29)
Monitoring Varnish with New Relic
How to install and configure Varnish and the New Relic agent to ingest logs and metrics into the platform
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ops (29)
Monitoring with Prometheus, Loki & Grafana
A simple setup to dive into monitoring using tools like Prometheus, Loki & Grafana
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ops (29)
Varnishlog: measure your Varnish cache performance
How to measure your Varnish cache performance with varnishlog.
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ops (29)
Monitoring Varnish with Datadog
How to install and configure Varnish and the Datadog agent to ingest logs and metrics into the platform
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ops (29)
Monitoring Varnish with Dynatrace
How to install and configure Varnish and the Dynatrace agent to ingest logs and metrics into the platform
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ops (29)
Terminating TLS in Varnish with Hitch
How to install and configure the Hitch TLS proxy to terminate TLS in Varnish.
Using the PROXY protocol in Varnish
How to configure the PROXY protocol in Varnish to capture connection information about the original client.
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ops (29)
Troubleshooting Varnish
How to troubleshoot Varnish when problems occur.
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ops (29)
Varnish monitoring
Monitoring your Varnish installation
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ops (29)
VCL
SELinux FAQ
Frequently asked questions about SELinux and Varnish Enterprise
Reducing Video Startup Time using CMSD
Optimize VST for video-on-demand by ensuring startup objects are served from the edge cache
Removing cookies in Varnish
How to remove cookies in Varnish
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vcl (30)
Bypassing the cache for specific URL patterns
How to bypass the cache for specific URLs and URL patterns in Varnish
Performing HTTP redirections in Varnish
Trigger vcl_synth and use a synthetic HTTP response to perform a HTTP redirections in Varnish
Example VCL template
An example VCL template for Varnish
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vcl (30)
Caching POST requests in Varnish
Learn how to cache POST requests with Varnish
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vcl (30)
Configuring systemd services
Managing the configuration of systemd services
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vcl (30)
Logging cache hits and misses
Logging cache hits and misses by tracking the request type (hit, miss, pass, pipe, synth, or hitmiss) in a custom x-cache request header
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vcl (30)
Varnish Configuration Language (VCL)
The Varnish Configuration Language (VCL) is a domain-specific programming language used by Varnish to control request handling, routing, caching, and several other aspects.
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vcl (30)
Load a synthetic output template from a file
Load the VCL output template for vcl_synth and vcl_backend_error from a file.
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vcl (30)
Varnish built-in VCL
Learn about Varnish's default behavior by looking at the various subroutines that are part of the built-in VCL.
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vcl (30)
Object lifetime: TTL, Grace, Keep
Tutorial to understand objects lifetime.
Un-categorized
Which version of Varnish should you use?
Which version of Varnish should you use?
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ops (29)
Testing Varnish with varnishtest
The Varnish Configuration Language (VCL) is a domain-specific programming language used by Varnish to control request handling, routing, caching, and several other aspects.