Go: go-redis

package main

import (
  "context"
  "fmt"
  "time"

  "github.com/go-redis/redis/v8"
)

var (
  ctx context.Context
  rdb *redis.Client
)

func init() {
  rdb = redis.NewClient(&redis.Options{
    Network:  "tcp",
    Addr:     "192.168.8.21:6379",
    Username: "tenacity",
    Password: "tenacity",
    DB:       0,
    PoolSize: 10,
  })
  // var cancelFunc context.CancelFunc
  ctx, _ = context.WithTimeout(context.Background(), 5*time.Second)

  // defer cancelFunc()

  result, err := rdb.Ping(ctx).Result()
  fmt.Println("result:", result)
  fmt.Println("err:", err)
}
func main() {
  err := rdb.Set(ctx, "name", "go", 0).Err()
  result, err := rdb.Ping(ctx).Result()
  fmt.Println(result, err)
  if err != nil {
    // panic(err)
    fmt.Println("err:", err)
  }
}