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Nginx

Nginx 實用筆記

Commands

nginx -s reload

proxy_cache

Serve static files

location ~* \.(jpg|png|css|js|js\.map|svg|json)$ {
    expires                         max;
    add_header                      Cache-Control "public";
}

upstream hash

增刪 server 會重新產生 hash。 

upstream proxy {
  hash $scheme$host$request_uri consistent;

  server                        cache-server-0.cache-server;
  server                        cache-server-1.cache-server;
}

cache loader process

/ # ps
PID   USER     TIME  COMMAND
    1 root      0:00 {openresty} nginx: master process /usr/local/openresty/bin/openresty -g daemon off;
    7 nobody    0:00 {openresty} nginx: worker process
    8 nobody    0:00 {openresty} nginx: worker process
    9 nobody    0:00 {openresty} nginx: cache manager process
   10 nobody    0:00 {openresty} nginx: cache loader process

Special Cases

proxy_pass to a static direction (path)

"proxy_pass" cannot have URI part in location given by regular expression

location /go404 {
    rewrite ^ /404$1 break;
    proxy_pass http://bk$uri;
}

Append a querystring to redirection

If a replacement string includes the new request arguments, the previous request arguments are appended after them

rewrite ^ http://test.example.com$uri?test=1 permanent;

Reference