Magento 2 Varnish4 Cache

A simple varnish 4 cache for Magento 2. This varnish cache works well with my magento2 dev container.

Using the cache

Minimal setup only requires that you bind port 80 to the host and that you name your magento2 container "magento2" or link it to magento2 in the varnish container.

docker-compose example:

version: "3"
services:

  varnish:
    depends_on:
      - magento2-dev
    image: magento2-varnish
    ports:
      - "80:80"
    links:
      - magento2-dev:magento2

  # Your magento 2 container goes here

Configure Magento 2 to use Varnish4

The following steps are required to ensure magento can use and purge the varnish cache:

• Log in to the Magento Admin as an administrator.
• Click STORES > Configuration > ADVANCED > System > Full Page Cache.
• From the Caching Application list, click Varnish Caching.
• Enter a value in the TTL for public content field.
• You do not need to fill in or export any configuration details.

Alternatively you can run the following command on your database container to enable the cache:

docker-compose exec db sh mysqld -u $MYSQL_USER -p"${MYSQL_PASSWORD}" -D $MYSQL_DATABASE -e \
"INSERT INTO core_config_data ( scope, scope_id, path, value ) VALUES \
( 'default', '0', 'system/full_page_cache/caching_application', '2') \
ON DUPLICATE KEY UPDATE value = 2;"

Where "db" is the name of the database container

Default variables

• VARNISH_PORT 80
• VARNISH_BACKEND 80

There are only two configurable variables, there is no need to really change these unless you have configured magento to listen on a different port or you want to serve varnish content on a port other than 80.