nginx.conf

Key point here is that you should insert cache configuration line before includes so that it should be evaluated beforehand.

http {

    ##
    # cache config
    ##
    proxy_cache_path /tmp/nginx/cache levels=1 keys_zone=wiki:4m inactive=1h max_size=10m;

    include /etc/nginx/conf.d/\*.conf;
    include /etc/nginx/sites-enabled/\*;
}

With this configuration,

• actual cache files are stored under /tmp/nginx/cache directory with hierarchy of one

/tmp/nginx/cache
├── 0
│   └── 64b08f8ec9459d892a1a80bea5d2d400
├── 1
│   └── 4bbed59225358625d11842e1ec069b81
├── 2
│   └── 47c32bbfbc8c08c9047c8a8271893f02

• cache is registered as key, “wiki”, which can have 10MB in size at most
• cache will be retired after 1 hour

Please make certain that cache directory does exit.

virtual host

A simple setup to store cache for response of status 200, which lasts 10 minutes.

location / {

    proxy_cache       wiki;
    proxy_cache_valid 200 10m;
}