Creating a Redis Client with Node.js

Install node-redis

First we have to install the node-redis package using the node package manager npm, to do this we run the following command.

• Java: You can use the Jedis library.
• JavaScript: The redis npm package, as you've shown.
• Python: You can use the redis-py library.
• C++: You can use the hiredis library.
• Go: You can use the go-redis library.

Each of these libraries will have its own method of installation and usage. If you need examples of how to interact with Redis in any of these languages, please let me know!

1npm install redis

or to install it globally, add -g:

1npm install -g redis

Now we can write our application code:

1import { createClient } from 'redis';
2
3async function nodeRedisDemo () {
4  try {
5    const client = createClient();
6    await client.connect();
7
8    await client.set('mykey', 'Hello from node-redis!');
9    const myKeyValue = await client.get('mykey');
10
11    const numAdded = await client.zAdd('vehicles', [
12      {
13        score: 4,
14        value: 'car'
15      },
16      {
17        score: 2,
18        value: 'bike'
19      }
20    ]);
21
22    for await (const { score, value } of client.zScanIterator('vehicles')) {
23      console.log(`${value} -> ${score}`);
24    }
25
26    await client.quit();
27  } catch (e) {
28    console.error(e);
29  }
30}
31
32nodeRedisDemo();

Please note that each language's Redis client has its own unique API, so the code may vary in structure and functionality. Make sure to consult the respective library's documentation for complete details on usage and best practices.