How do I use connection pools with Redis in Go?

Using connection pools with Redis in Go can help manage multiple clients and optimize resource usage effectively. Here's a quick guide on how to implement Redis connection pooling in your Go applications.

package main

import (
    "fmt"
    "github.com/go-redis/redis/v8"
    "context"
)

func main() {
    ctx := context.Background()
    
    // Creating a connection pool
    rdb := redis.NewClient(&redis.Options{
        Addr:     "localhost:6379",  // Redis server address
        Password: "",                 // No password set
        DB:       0,                  // Use default DB
        PoolSize: 10,                 // Set the size of the connection pool
    })

    // Ping the Redis server to test the connection
    pong, err := rdb.Ping(ctx).Result()
    if err != nil {
        fmt.Println("Could not connect to Redis:", err)
    }
    fmt.Println(pong) // Output: PONG

    // Example of using the pool to set and get a value
    err = rdb.Set(ctx, "key", "value", 0).Err()
    if err != nil {
        fmt.Println("Could not set key:", err)
    }

    val, err := rdb.Get(ctx, "key").Result()
    if err != nil {
        fmt.Println("Could not get key:", err)
    }
    fmt.Println("key:", val) // Output: key: value

    // Closing the connection
    defer rdb.Close()
}