nginx

[magicdawn]

tips on nginx.

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links

• route: http://www.tuicool.com/articles/VzuIBvY
• http://www.cnblogs.com/derekchen/archive/2011/02/17/1957209.html

commands

• 测试 syntax nginx -t
• 重启 nginx -s reload # 即是发送一个 reload singal

location策略

# 精确匹配
# = `路径`
location = /a/b.js {
  # blabla
}

# 路径以xx开头
# `^~` `路径`
location ^~ /public {
  # blabla
}

# 正则
# `~` 正则
location ~ /(aaaa|bbbb) {
  # blabla
}

# 匹配所有
location / {
  # blabla
}

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nginx 反代 websocket

https://www.nginx.com/blog/websocket-nginx/

[magicdawn]

syntax

map

map baseVar derivedVar{
  default a;
  '' b;
}

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^~ /abc & ^~ /abc/

proxy_pass localhost:1234/

^~ /abc

访问 /abc/def , 则后面收到的是 //def

^~ /abc/

访问 /abc/def, 则后面收到的是 /def

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alias & root 静态文件

http://stackoverflow.com/questions/10631933/nginx-static-file-serving-confusion-with-root-alias

[magicdawn]

proxy 反代模块

• host & client-ip http://zhidao.baidu.com/link?url=ZJjy_5i3x-La794rU7ig8gvk5-ZslDPlcl_pUIs9lTTQFX-EdPdlqN4-c9Qd6CDrfqK-i26Gjjwqzynyu3kZEK

proxy_pass

https://my.oschina.net/foreverich/blog/1512304

# 会将 prefix 删除
proxy_pass backend/; 

# 会保留 prefix
proxy_pass backend;

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performance 优化

https://www.nginx.com/blog/tuning-nginx/

[magicdawn]

webpack index.html 不缓存配置

• http://codingfishman.github.io/2016/04/30/NINGX-try-files-And-add-header/

[magicdawn]

understanding nginx blocks

https://www.digitalocean.com/community/tutorials/understanding-nginx-server-and-location-block-selection-algorithms

location 顺序

1. exact, location =
2. eaact prefix location ^~ /blabla
3. regex location ~* \.html
4. prefix location /blabla

前端 SPA 部署

1. 使用 ^~

location ^~ /app {
  try_files $uri /app/index.html
  add_header Cache-Control max-age=86400;
}

location = /app/index.html {
  add_header Cache-Control no-cache;
}

使用 ^~ 在 block 里使用 root / alias
上面应该在 server context 里写了 root / alias

location ^~ /app {
  try_files $uri /app/index.html;
  alias /some/dir/dist/;
  add_header Cache-Control max-age='86400;
}

location = /app/index.html {
  alias /some/dir/dist/index.html;
  add_header Cache-Control no-cache;
}

使用 /prefix

location /app{
  try_files $uri /app/index.html
  add_header Cache-Control max-age=86400;
}

location \.html$ {
  add_header Cache-Control no-cache;
}

[magicdawn]

add_header

• add_header 默认会在 upstream 返回 2xx / 3xx 增加 header
• > 1.7.5 可以写 add_header name value always, 忽略 upstream 的 status code