/go-cdn

sample for CDN in go

Primary LanguageGo

Go CDN

this is a mini cdn server that can save and manage your image files. This utility can be used as stand alone Content Delivery Network, using Mysql as database .

features

  • on the fly resize image/jpeg
  • cache strategy
  • additional metadata for each file category and tags

Environments

  • _BASE_URL=http://localhost:8080/ #Base url
  • _HOST=0.0.0.0:8080 #server ip and port
  • _MYSQL_HOST=127.0.0.1 #mysql config
  • _MYSQL_PORT=3306 #mysql config
  • _MYSQL_DB=go_cdn #mysql config
  • _MYSQL_USER=root #mysql config
  • _MYSQL_PASS=root #mysql config
  • _ENCRYPTION_KEY=TESTKEY #encrypt image id with this key
  • _BASE_IMAGE_FOLDER=/your/image/store/path #save images to this folder

Diagram

sequenceDiagram
   actor u as User
   participant p as Application
   participant ap as Cache
   participant db as Database

   u ->>+ p: Request images/image
   p ->>+ ap: Request<br />Image
   ap ->>- p: Response
   opt Not Found
      p ->> db: get Image
      db ->> ap: cache Image
      db ->> p: Response
      p ->> u: Response
   end
Loading

dependencies

  • gopkg.in/gin-gonic/gin.v1
  • github.com/gin-contrib/cache
  • github.com/gin-contrib/cache/persistence
  • gopkg.in/gorp.v1
  • github.com/ziutek/mymysql/godrv
  • github.com/speps/go-hashids