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Nginx Performance Tuning

Adjusting the Nginx Configuration to Use SSL

   $ sudo nano /etc/nginx/nginx.conf

Logging Settings

##
# Logging Settings
##

   # access_log /var/log/nginx/access.log;
   error_log /var/log/nginx/error.log;

   # enabling buffering to the log. Once the buffer size reaches its limit, 
   # Nginx writes buffer content to log. 
   # access_log /var/log/nginx/access.log main buffer=16k;

   # disable the access log
   access_log off;

Content Compression : Gzip Settings

Uncomment and modify the gzip setting in the configuration file, located at /etc/nginx/nginx.conf.

   ##
   # Gzip Settings
   ##

   gzip on;

   gzip_vary on;
   gzip_proxied no-cache no-store private expired auth;
   gzip_comp_level 6;
   gzip_buffers 16 8k;

   # Sets the minimum HTTP version of a request required to compress a response.
   gzip_http_version 1.1;

   gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

Caching

Benefits of Nginx Caching : Improved load times, Reduced server load, Scalability, Enhanced SEO

  1. Configure Nginx for Caching Use these directives to set microcaching with the path at /tmp/cache_nginx with 100MB cache with a max size of 1GB of cache folder that updates cache in the background. edit the configuration file, located at /etc/nginx/nginx.conf. 
    proxy_cache_path /tmp/cache_nginx levels=1:2 keys_zone=crm_proxy_cache:100m max_size=1g inactive=60m use_temp_path=off;
    • keys_zone=crm_proxy_cache:60m: Cache zone and its size.
    • inactive=60m: Time after which unused cached content is removed.
    • use_temp_path=off: Disable the use of a temporary path for cache storage.

  2. Creating Microcaching Snippet

    $ sudo nano /etc/nginx/snippets/proxy-cache-params.conf

    Within this file will look like the following:

    ## Microcaching ##
proxy_cache_key "$scheme$request_method$host$request_uri";

proxy_cache_methods GET HEAD;
proxy_cache_valid any 1m;
proxy_cache_valid 200 30m;
      
# Cache locking: Cache locking can help prevent multiple simultaneous requests 
# for the same uncached content, known as the “thundering herd” problem.
proxy_cache_lock on;

proxy_cache_bypass $http_cache_control;
proxy_cache_use_stale updating error timeout http_500 http_502 http_503 http_504;

add_header X-Proxy-Cache $upstream_cache_status;
  • proxy_cache_valid 200 30m: Cache successful responses (HTTP 200) for 30 minutes.
  • add_header X-Proxy-Cache $upstream_cache_status: Add a header to display the cache status in responses.
  1. Tunning Parameters 
    $ sudo nano /etc/nginx/snippets/tuning-params.conf

    Within this file will look like the following:

    proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
   
proxy_ignore_headers Set-Cookie;
proxy_ignore_headers vary X-Accel-Expires Expires Cache-Control  Set-Cookie;

proxy_hide_header vary;
proxy_hide_header Upgrade;

proxy_buffering on;

proxy_connect_timeout      90;:
proxy_read_timeout         90;
proxy_send_timeout         300;
send_timeout               300;

client_max_body_size 10m;
client_body_buffer_size    128k;
client_body_timeout 60;

  2. Add Caching and Tunning to Server Block open your site’s server block configuration file, usually located at /etc/nginx/sites-available/default.

    #
proxy_pass https://backend_crm;
...

## Microcaching ##
proxy_cache crm_proxy_cache;

# include Microcaching config params
include snippets/proxy-cache-params.conf;

# Intercept Link header and initiate requested Pushes
http2_push_preload on;

# include tunning config params
include snippets/tuning-params.conf;

Reference