go-redis¶

Access a DCS Redis instance through go-redis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.

Prerequisites¶

A DCS Redis instance has been created and is in the Running state.
View the IP address/domain name and port number of the DCS Redis instance to be accessed.
For details, see Viewing Details of a DCS Instance.
An ECS has been created. For details about how to create an ECS, see Elastic Cloud Server User Guide.

Procedure¶

Log in to the ECS.
A Windows ECS is used as an example.
Install Visual Studio Community 2017 on the ECS.
Start Visual Studio and create a project. The project name can be customized. In this example, the project name is set to redisdemo.
Import the dependency package of go-redis and enter go get github.com/go-redis/redis on the terminal.

Write the following code:

package main

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

func main() {
    // Single-node
    rdb := redis.NewClient(&redis.Options{
        Addr:     "host:port",
        Password: "********", // no password set
        DB:       0,  // use default DB
    })

    val, err := rdb.Get("key").Result()
    if err != nil {
        if err == redis.Nil {
            fmt.Println("key does not exists")
            return
        }
        panic(err)
    }
    fmt.Println(val)

    //Cluster
    rdbCluster := redis.NewClusterClient(&redis.ClusterOptions{
        Addrs:    []string{"host:port"},
        Password: "********",
    })
    val1, err1 := rdbCluster.Get("key").Result()
    if err1 != nil {
        if err == redis.Nil {
            fmt.Println("key does not exists")
            return
        }
        panic(err)
    }
    fmt.Println(val1)
}

host:port are the IP address/domain name and port number of the DCS Redis instance. For details about how to obtain the IP address/domain name and port, see Prerequisites. Change them as required. ******** indicates the password used to log in to the DCS Redis instance. This password is defined during DCS Redis instance creation.

Run the go build -o test main.go command to package the code into an executable file, for example, test.
Caution
To run the package in the Linux OS, set the following parameters before packaging:
set GOARCH=amd64
set GOOS=linux
Run the ./test command to access the DCS instance.

last updated: 2024-09-09 11:37 UTC - commit: f1eb572c8449c262e887766d9a022219e570ee26