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Getting Started with Redis on Node

Installing Redis on Windows is surprisingly easy!

Install Redis on Windows

  1. Go to the releases page of the Redis for Windows repo: https://github.com/MicrosoftArchive/redis/releases
  2. Download the 'Redis-x64-xxx.zip' file. You can use any version. Make sure you do not download the 'source code' zip.
  3. Unzip the file
  4. In the newly created folder, run redis-server.exe 
  5. You should see a window appear that says redis is running on port 6379.

Run Redis

  1. Open a folder in Terminal
  2. Install redis
    1. npm install --save redis
  3. Run node
    1. node
  4. Run the following one after the other to get started with redis set and get
    1. const redis = require('redis');
    2. const redisUrl = 'redis://127.0.0.1:6379'
    3. const client = redis.createClient(redisUrl)
    4. client
    5. client.set('hi', 'there');
    6. client.get('hi', (err, value) => console.log(value));
    7. client.get('hi', console.log);

Example of using hash inside values with hset and hget

    1. client.hset('german', 'red', 'rot');
    2. client.hget('german', 'red', console.log);
    3. client.hset('german', 'blue', 'blau');
    4. client.hget('german', 'blue', console.log);

Cannot set value to be Javascript Object

    1. client.set('javascriptObject', { red: 'rojo' }); ❌
    2. client.get('javascriptObject', console.log);

Output:

null '[object Object]'

Workaround: Use JSON.stringify()

    1. client.set('jsonString', JSON.stringify({ red: 'rojo' })); ✔️
    2. client.get('jsonString', console.log);

Output:

null '{"red":"rojo"}'

Get and convert back to Javascript Object

  1. client.get('jsonString', (err, value) => console.log(JSON.parse(value)));

Output:

{ red: 'rojo' }

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