How to Connect

Connecting with Node.js
This guide explains how to establish a connection between a Node.js application and a Redis database using the  redis package. It walks through the necessary setup, configuration, and execution of a simple Redis command. 
 Variables 
 To successfully connect to a Redis instance, you’ll need to provide the following parameters. These can typically be found on the Elestio service overview page. 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname (from Elestio service overview) 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Redis port (from Elestio service overview) 
 
 
 The port used for the Redis connection. The default Redis port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password (from Elestio service overview) 
 
 
 Authentication key used to connect securely to the Redis instance. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and add it to the code moving ahead. 
 
 Prerequisites 
 Install Node.js and NPM 
 
 
 Check if Node.js is installed by running: 
 
 
 node -v 
 
 
 If not installed, download and install it from nodejs.org . 
 
 
 Confirm npm is installed by running: 
 
 
 npm -v 
 Install the  redis Package 
 The redis package enables communication between Node.js applications and Redis. 
 npm install redis --save 
 Code 
 Create a new file named redis.js and add the following code: 
 const redis = require("redis");

// Redis connection configuration
const config = {
 socket: {
 host: "HOST",
 port: PORT,
 },
 password: "PASSWORD",
};

// Create a Redis client
const client = redis.createClient(config);

// Handle connection errors
client.on("error", (err) => {
 console.error("Redis connection error:", err);
});

// Connect and run a test command
(async () => {
 try {
 await client.connect();
 console.log("Connected to Redis");

 // Set and retrieve a test key
 await client.set("testKey", "Hello Redis");
 const value = await client.get("testKey");
 console.log("Retrieved value:", value);

 // Disconnect from Redis
 await client.disconnect();
 } catch (err) {
 console.error("Redis operation failed:", err);
 }
})(); 
 To execute the script, open the terminal or command prompt and navigate to the directory where  redis.js is located. Once in the correct directory, run the script with the command: 
 node redis.js 
 If the connection is successful, the output should resemble: 
 Connected to Redis 
Retrieved value: Hello Redis

Connecting with Python
This guide explains how to connect a Python application to a Redis database using the  redis library. It walks through the required setup, configuration, and execution of a simple Redis command. 
 Variables 
 To connect to Redis, the following parameters are needed. You can find these values in the Elestio Redis service overview. 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname (from Elestio service overview) 
 
 
 Address of the Redis server. 
 
 
 
 
 PORT 
 
 
 Redis port (from Elestio service overview) 
 
 
 Port used to connect to Redis. The default is 6379 . 
 
 
 
 
 PASSWORD 
 
 
 Redis password (from Elestio service overview) 
 
 
 Authentication credential for the Redis connection. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and add it to the code moving ahead. 
 
 Prerequisites 
 Install Python and pip 
 
 
 Check if Python is installed by running: 
 
 
 python3 --version 
 
 
 If not installed, download and install it from python.org . 
 
 
 Check pip (Python package installer): 
 
 
 pip --version 
 Install the  redis Package 
 Install the official redis library using pip: 
 pip install redis 
 Code 
 Create a file named redis.py and paste the following code: 
 import redis

config = {
 "host": "HOST",
 "port": PORT, # Example: 6379
 "password": "PASSWORD",
 "decode_responses": True
}

try:
 client = redis.Redis(**config)
 client.set("testKey", "Hello Redis")
 value = client.get("testKey")
 print("Connected to Redis")
 print("Retrieved value:", value)

except redis.RedisError as err:
 print("Redis connection or operation failed:", err) 
 To execute the script, open the terminal or command prompt and navigate to the directory where  redis.py is located. Once in the correct directory, run the script with the command: 
 python3 redis.py 
 If everything is set up correctly, the output will be: 
 Connected to Redis 
Retrieved value: Hello Redis

Connecting with PHP
This guide explains how to establish a connection between a PHP application and a Redis database using the  phpredis extension. It walks through the necessary setup, configuration, and execution of a simple Redis command. 
 Variables 
 Certain parameters must be provided to establish a successful connection to a Redis database. Below is a breakdown of each required variable, its purpose, and where to find it. Here’s what each variable represents: 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname, from the Elestio service overview page 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Port for Redis connection, from the Elestio service overview page 
 
 
 The network port used to connect to Redis. The default port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password, from the Elestio service overview page 
 
 
 The authentication key required to connect securely to Redis. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below. Make sure to take a copy of these details and add it to the code moving ahead. 
 
 Prerequisites 
 
 Install PHP 
 
 Check if PHP is installed by running: 
 
 
 
 php -v 
 
 
 
 If not installed, download it from php.net and install. 
 
 
 Install the  phpredis Extension 
 
 The  phpredis extension provides a native PHP interface for Redis. You can install it using: 
 
 
 
 sudo pecl install redis 
 
 
 
 Then enable it in your php.ini : 
 
 
 
 extension=redis 
 
 
 
 To verify it’s installed: 
 
 
 
 php -m | grep redis 
 Code 
 Once all prerequisites are set up, create a new file named redis.php and add the following code: 
 <?php

$host = 'HOST';
$port = PORT;
$password = 'PASSWORD';

$redis = new Redis();

try {
 $redis->connect($host, $port);

 if (!$redis->auth($password)) {
 throw new Exception('Authentication failed');
 }

 echo "Connected to Redis\n";

 $redis->set("testKey", "Hello Redis");
 $value = $redis->get("testKey");
 echo "Retrieved value: $value\n";

 $redis->close();

} catch (Exception $e) {
 echo "Redis connection or operation failed: " . $e->getMessage() . "\n";
} 
 Open the terminal or command prompt and navigate to the directory where redis.php is located. Once in the correct directory, run the script with the command: 
 php redis.php 
 If the connection is successful, the terminal will display output similar to: 
 Connected to Redis 
Retrieved value: Hello Redis

Connecting with Go
This guide explains how to establish a connection between a Go application and a Redis database using the  go-redis package. It walks through the necessary setup, configuration, and execution of a simple Redis command. 
 Variables 
 Certain parameters must be provided to establish a successful connection to a Redis database. Below is a breakdown of each required variable, its purpose, and where to find it. Here’s what each variable represents: 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname, from the Elestio service overview page 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Port for Redis connection, from the Elestio service overview page 
 
 
 The network port used to connect to Redis. The default port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password, from the Elestio service overview page 
 
 
 The authentication key required to connect securely to Redis. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and add it to the code moving ahead. 
 
 Prerequisites 
 Install Go 
 Check if Go is installed by running: 
 go version 
 If not installed, download it from golang.org and install. 
 Install the  go-redis Package 
 The go-redis package enables Go applications to interact with Redis. Install it using: 
 go get github.com/redis/go-redis/v9 
 Code 
 Once all prerequisites are set up, create a new file named redis.go and add the following code: 
 package main

import (
	"context"
	"fmt"
	"time"

	"github.com/redis/go-redis/v9"
)

func main() {
	opt := &redis.Options{
		Addr: "HOST:PORT", 
		Password: "PASSWORD", 
		DB: 0, 
	}

	rdb := redis.NewClient(opt)
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	err := rdb.Set(ctx, "testKey", "Hello Redis", 0).Err()
	if err != nil {
		fmt.Println("Redis operation failed:", err)
		return
	}

	val, err := rdb.Get(ctx, "testKey").Result()
	if err != nil {
		fmt.Println("Redis operation failed:", err)
		return
	}

	fmt.Println("Connected to Redis")
	fmt.Println("Retrieved value:", val)

	if err := rdb.Close(); err != nil {
		fmt.Println("Error closing connection:", err)
	}
} 
 To execute the script, open the terminal or command prompt and navigate to the directory where redis.go is located. Once in the correct directory, run the script with the command: 
 go run redis.go 
 If the connection is successful, the terminal will display output similar to: 
 Connected to Redis 
Retrieved value: Hello Redis

Connecting with Java
This guide explains how to establish a connection between a Java application and a Redis database using the  Jedis library. It walks through the necessary setup, configuration, and execution of a simple Redis command. 
 Variables 
 Certain parameters must be provided to establish a successful connection to a Redis database. Below is a breakdown of each required variable, its purpose, and where to find it. Here’s what each variable represents: 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname, from the Elestio service overview page 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Port for Redis connection, from the Elestio service overview page 
 
 
 The network port used to connect to Redis. The default port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password, from the Elestio service overview page 
 
 
 The authentication key required to connect securely to Redis. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and add it to the code moving ahead. 
 
 Prerequisites 
 Install Java 
 Check if Java is installed by running: 
 java -version 
 If not installed, download it from oracle.com and install. 
 Download Jedis and Dependencies 
 The Jedis library enables Java applications to interact with Redis. You need to download two JAR files manually: 
 
 
 Jedis JAR (Jedis 5.1.0): 
 https://repo1.maven.org/maven2/redis/clients/jedis/5.1.0/jedis-5.1.0.jar 
 
 
 Apache Commons Pool2 JAR (Required by Jedis): 
 https://repo1.maven.org/maven2/org/apache/commons/commons-pool2/2.11.1/commons-pool2-2.11.1.jar 
 
 
 Place both JAR files in the same directory as your Java file. 
 Code 
 Once all prerequisites are set up, create a new file named RedisTest.java and add the following code: 
 import redis.clients.jedis.JedisPooled;

public class RedisTest {
 public static void main(String[] args) {
 // Redis connection configuration
 String host = "HOST";
 int port = PORT; // e.g., 6379
 String password = "PASSWORD";

 // Create a Redis client
 JedisPooled jedis = new JedisPooled(host, port, password);

 try {
 // Set and get a test key
 jedis.set("testKey", "Hello Redis");
 String value = jedis.get("testKey");

 System.out.println("Connected to Redis");
 System.out.println("Retrieved value: " + value);

 } catch (Exception e) {
 System.out.println("Redis connection or operation failed: " + e.getMessage());
 }
 }
} 
 To execute the script, open the terminal or command prompt and navigate to the directory where RedisTest.java is located. Once in the correct directory, run the following commands: 
 On  Linux/macOS : 
 javac -cp "jedis-5.1.0.jar:commons-pool2-2.11.1.jar" RedisTest.java
java -cp ".:jedis-5.1.0.jar:commons-pool2-2.11.1.jar" RedisTest 
 On  Windows : 
 javac -cp "jedis-5.1.0.jar;commons-pool2-2.11.1.jar" RedisTest.java
java -cp ".;jedis-5.1.0.jar;commons-pool2-2.11.1.jar" RedisTest 
 If the connection is successful, the terminal will display output similar to: 
 Connected to Redis 
Retrieved value: Hello Redis

Connecting with RedisInsight
This guide explains how to establish a connection between RedisInsight and a Redis database instance. It walks through the necessary setup, configuration, and connection steps using the official Redis GUI. 
 Variables 
 Certain parameters must be provided to establish a successful connection to a Redis database. Below is a breakdown of each required variable, its purpose, and where to find it. Here’s what each variable represents: 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname, from the Elestio service overview page 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Port for Redis connection, from the Elestio service overview page 
 
 
 The network port used to connect to Redis. The default port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password, from the Elestio service overview page 
 
 
 The authentication key required to connect securely to Redis. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and add it to the tool moving ahead. 
 
 Prerequisites 
 Install RedisInsight 
 RedisInsight is a graphical tool for managing Redis databases. Download and install RedisInsight from: 
 https://redis.com/redis-enterprise/redis-insight/ 
 RedisInsight is available for Windows, macOS, and Linux. 
 Steps 
 Once all prerequisites are set up, follow these steps to connect: 
 
 
 Launch RedisInsight 
 Open the RedisInsight application after installation. 
 
 
 Add a New Redis Database 
 Click on “Add Redis Database” . 
 
 
 Enter Your Connection Details 
 Fill in the following fields using your Elestio Redis service information: 
 
 
 Host : HOST 
 
 
 Port : PORT 
 
 
 Password : PASSWORD 
 
 
   
 
 
 
 Test and Save the Connection 
 Click on “Test Connection” to verify the details. If successful, click “Connect” or “Add Database” . 
 
 
 If the connection is successful, RedisInsight will display a dashboard showing key metrics, data structures, memory usage, and allow you to interact directly with Redis using a built-in CLI or visual browser.

Connecting with redis-cli
This guide explains how to establish a connection between  redis-cli and a Redis database instance. It walks through the necessary setup, configuration, and execution of a simple Redis command from the terminal. 
 Variables 
 Certain parameters must be provided to establish a successful connection to a Redis database. Below is a breakdown of each required variable, its purpose, and where to find it. Here’s what each variable represents: 
 
 
 
 
 Variable 
 
 
 Description 
 
 
 Purpose 
 
 
 
 
 
 
 HOST 
 
 
 Redis hostname, from the Elestio service overview page 
 
 
 The address of the server hosting your Redis instance. 
 
 
 
 
 PORT 
 
 
 Port for Redis connection, from the Elestio service overview page 
 
 
 The network port used to connect to Redis. The default port is 6379. 
 
 
 
 
 PASSWORD 
 
 
 Redis password, from the Elestio service overview page 
 
 
 The authentication key required to connect securely to Redis. 
 
 
 
 
 These values can usually be found in the Elestio service overview details as shown in the image below, make sure to take a copy of these details and use them in the command moving ahead. 
 
 Prerequisites 
 Install redis-cli 
 Check if redis-cli is installed by running: 
 redis-cli --version 
 If not installed, you can install it via: 
 
 
 macOS : 
 
 
 brew install redis 
 
 
 Ubuntu/Debian : 
 
 
 sudo apt install redis-tools 
 
 
 Windows : 
 Use Windows Subsystem for Linux (WSL) or download a Redis CLI binary. 
 
 
 Command 
 Once all prerequisites are set up, open the terminal or command prompt and run the following command: 
 redis-cli -h HOST -p PORT -a PASSWORD 
 Replace HOST , PORT , and PASSWORD with the actual values from your Elestio Redis service. If the connection is successful, the terminal will display a Redis prompt like this: 
 HOST:PORT> 
 You can then run a simple command to test the connection: 
 set testKey "Hello Redis"
get testKey 
 Expected output: 
 "Hello Redis" 
 If the connection is successful, the terminal will display output similar to: 
 "Hello Redis"