Simplify Complexities

There are two popular choices:

• go-redis
• redigo

I prefer redigo over go-redis.

Cons with go-redis

• Not enough documentation for APIs
• Difficult to understand naming conventions for APIs
• I’m still finding how to refresh expiry time of a key using go-redis
• Needs Cmdable interface for calling Redis commands. The interface is not so well designed.

---

An interface in go-redis

   type Cmdable interface {
   TTL(key string) *DurationCmd
   Restore(key string, ttl time.Duration, value string) *StatusCmd

Pros with redigo

• Easy to understand APIs
• Ability to call Redis commands from the client so you never have to learn a new wrapper
• No extra interface like go-redis

A sample client with go-redis is as following:

  package main

  import (
      "fmt"

      "github.com/go-redis/redis"
  )

  func HandleErr(err error) {
      if err != nil {
          panic(err)
      }
  }

  /*
  type DurationCmd struct {
      baseCmd

      val       time.Duration
      precision time.Duration
  }
  */

  func ExampleNewClient() {
      client := redis.NewClient(&redis.Options{
          Addr:     "localhost:6379",
          Password: "", // no password set
          DB:       0,  // use default DB
      })
      
      err = client.Set("key", "value", 0).Err()
      HandleErr(err)

      val, err := client.Get("key").Result()
      HandleErr(err)
      fmt.Println("key", val)

      ttl := client.TTL("key")
      fmt.Println("ttl", ttl)
  }

  func main() {
      ExampleNewClient()
  }