connection limit

每一ip最多50連線數

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limit_conn_zone $binary_remote_addr zone=connlimit:10m;
server {
    # ...
    location / {
      limit_conn connlimit 50;
      # ...
    }
    # ...
 }

bandwith limit

當流量超過500k時限制速度為50k

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limit_conn_zone $binary_remote_addr zone=connlimit:10m;
server {
    # ...
    location / {
      limit_rate 50k;
      limit_rate_after 500k;
      # ...
    }
 }

rate limit

每秒最多50 request

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limit_req_zone $binary_remote_addr zone=one:10m rate=50r/s;
server {
    # ...
    location / {
      limit_req zone=one burst=5 nodelay;
      # ...
    }
    # ...
 }

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Container之間有關係時可以用docker command中的–link搞定
當有多個Container需要連結時我們會希望能撰寫一份設定檔定義Container之間的關係然後執行就好
這就是docker-compose在做的事
撰寫docker-compose.yml定義各Container link relation
然後run docker-compose up -d

Command

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docker-compose -f ./docker-compose.yml up -d

docker-compose.yml example

以下設定表示
faceblock是ap server
zombodb_postgres是postgres database
zombodb_elastic是elasticsearch database
faceblock相依於zombodb_postgres
zombodb_postgres相依於zombodb_elastic

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faceblock:
  build: ./faceblock # DockerFile location
  ports: # export ports
   - "3001:3000"
   - "3043:443"
  links: # dependency
   - zombodb_postgres
  entrypoint: /execute.sh
zombodb_postgres:
  build: ./postgres
  ports:
   - "5432:5432"
  links:
   - zombodb_elastic
  restart: always # auto restart while exit
zombodb_elastic:
  build: ./elasticsearch
  ports:
   - "9200:9200"
   - "9300:9300"
  restart: always

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Domain Setting

1. 買一個domain(namecheap之類的)
2. 照著官方文件做吧
   https://www.digitalocean.com/community/tutorials/how-to-set-up-a-host-name-with-digitalocean

Swap Setting

Digital Ocean每月5美金的那個VPS，記憶體只有512MB
並且Digital Ocean預設OS的Swap是關閉的（官方說明SSD不建議使用swap）
若在上面再用docker的話高機率因為記憶體不足process被kill掉
若是真的不想加錢買更多記憶體的話還是可以手動開啟swap

一樣官方文件照著做就好
https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04

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https://github.com/tschaub/gh-pages
Publish files to a gh-pages branch on GitHub

install

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npm install gh-pages --save-dev

config

add following to package.json
-d : base path of static files

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"scripts": {
  "deploy": "gh-pages -d dist"
}

deploy

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npm run deploy

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