# The path to store the cache files, limit the folder to 100MB
fastcgi_cache_path /var/run/nginx-cache-fastcgi levels=1:2 keys_zone=WORDPRESS:100m inactive=120m max_size=1g use_temp_path=off;

# A unique request is defined by this cache key
fastcgi_cache_key "$scheme$request_method$host$request_uri";

# Show the cached version if upstream gives a timeout or a HTTP 500 error
fastcgi_cache_use_stale error timeout invalid_header http_500;

# Revalidate items in the cache if they are update 
fastcgi_cache_revalidate on;

# Minimum time to store an item in the cache
fastcgi_cache_min_uses 3;

# Cache everything for 1 day
fastcgi_cache_valid 1d;

# Don't use the following headers to define the cache variables
fastcgi_ignore_headers Cache-Control Expires Set-Cookie;

# Some parts of this file are from
# https://gist.github.com/TrafeX/6d582b6d040702088722