Go and Redis

Find tutorials, examples and technical articles that will help you to develop with Redis and Golang.

Getting Started

Golang community has built many client libraries that you can find here. For your first steps with Golang and Redis, this article will show how to use the recommended library: redigo.

Redigo

The redigo library is located in the https://github.com/gomodule/redigo that you must import in your application.

Step 1. Import the redigo module

go get github.com/gomodule/redigo/redis

import (

"fmt"

"context"

"github.com/gomodule/redigo/redis"

)

Step 2. Create a connection pool

func newPool() *redis.Pool {

return &redis.Pool{

MaxIdle: 80,

MaxActive: 12000,

Dial: func() (redis.Conn, error) {

c, err := redis.Dial("tcp", ":6379")

if err != nil {

panic(err.Error())

}

return c, err

},

}

}

Step 3. Write your application code

package main

import (

"fmt"

"github.com/gomodule/redigo/redis"

)

var pool = newPool()

func main() {

client := pool.Get()

defer client.Close()

_, err := client.Do("SET", "mykey", "Hello from redigo!")

if err != nil {

panic(err)

}

value, err := client.Do("GET", "mykey")

if err != nil {

panic(err)

}

fmt.Printf("%s \n", value)

_, err = client.Do("ZADD", "vehicles", 4, "car")

if err != nil {

panic(err)

}

_, err = client.Do("ZADD", "vehicles", 2, "bike")

if err != nil {

panic(err)

}

vehicles, err := client.Do("ZRANGE", "vehicles", 0, -1, "WITHSCORES")

if err != nil {

panic(err)

}

fmt.Printf("%s \n", vehicles)

}

func newPool() *redis.Pool {

return &redis.Pool{

MaxIdle: 80,

MaxActive: 12000,

Dial: func() (redis.Conn, error) {

c, err := redis.Dial("tcp", ":6379")

if err != nil {

panic(err.Error())

}

return c, err

},

}

}

Find more information about Golang & Redis connections in the "Redis Connect".

Go-Redis

Go-redis is a type-safe, Redis client library for Go with support for features like Pub/Sub, sentinel, and pipelining.It is a Redis client able to support a Redis cluster and is designed to store and update slot info automatically with a cluster change. Below are the attractive features of Go-redis:

• Go-redis has pooling capabilities.(Pools allow you to safely handle go-routines, auto reconnect if any error occurs)
• It supports both standard, OSS cluster AIP, and Sentinel
• Comes with Auto reconnects / Auto-rediscovers cluster slots on error/migration
• Support instrumentations
• Allows for a custom dialer (this is useful for Enterprise)

The go-redis library is located in the https://github.com/go-redis/redis that you must import in your application.

Step 1. Run the Redis Docker container

docker run -d -p 6379:6379 redislabs/redismod

Step 2. Initialise the Go Module

go mod init github.com/my/repo

Step 3. Install redis/v8

go get github.com/go-redis/redis/v8

Step 4. Create a main.go file

Let us create a main.go file and write the following code to check for your connection

package main

import (

"fmt"

"github.com/go-redis/redis"

)

func main() {

fmt.Println("Testing Go-Redis")

client := redis.NewClient(&redis.Options{

Addr: "localhost:6379",

Password: "",

DB: 0,

})

pong, err := client.Ping().Result()

fmt.Println(pong, err)

}

Step 5. Begin the compilation

go run main.go

By now, the Go application should successfully connect to the Redis instance and return a successful PONG response.

Redis Launchpad

Redis Launchpad is like an “App Store” for Redis sample apps. You can easily find apps for your preferred frameworks and languages. Below are few of these apps. Click here to access the complete lists of apps

Rate-Limiting app in Go

Rate Limiting app built in Go

Leaderboard app in Go

How to implement leaderboard app in Go

Technical Articles & Whitepapers

Redis and Golang: Designed to Improve Performance

A High Performance Recommendation Engine with Redis and Go