Redis basics

In this article, we will demonstrate only the Set and Get operations in Redis using Golang.

For this article, we will use this package:

go get github.com/redis/go-redis/v9

This is the complete code; below, we will discuss the most important points:

package main

import (
	"context"
	"fmt"
	"github.com/redis/go-redis/v9"
)

func main() {
	client := redis.NewClient(&redis.Options{
		Addr:     "localhost:6379",
		Password: "",
		DB:       0,
		Protocol: 2,
	})

	ctx := context.Background()

	err := client.Set(ctx, "myKey", "myValue", 0).Err()
	if err != nil {
		panic(err)
	}

	val, err := client.Get(ctx, "myKey").Result()
	if err != nil {
		panic(err)
	}

	fmt.Println("value of myKey:", val)
}

This is one way to configure a new client for Redis.

client := redis.NewClient(&redis.Options{
    Addr:     "localhost:6379",
    Password: "",
    DB:       0,
    Protocol: 2,
})

SET

To perform the Set operation, we chain the Set function followed by the Err function.

err := client.Set(ctx, "myKey", "myValue", 0).Err()

In the Set function, we pass the context, key, value, and the duration the key should last as parameters. If we pass 0, it means the key/value pair will never expire.

GET

To perform the Get operation, we chain the Get function followed by the Result function.

val, err := client.Get(ctx, "myKey").Result()