https://github.com/syed007hassan/node-redis

API caching in NodeJS using Redis database
https://github.com/syed007hassan/node-redis

api cache express redis-client

Last synced: 5 months ago
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API caching in NodeJS using Redis database

• Host: GitHub
• URL: https://github.com/syed007hassan/node-redis
• Owner: Syed007Hassan
• Created: 2023-09-01T20:06:39.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2023-09-02T13:17:19.000Z (about 2 years ago)
• Last Synced: 2025-02-17T21:46:39.425Z (8 months ago)
• Topics: api, cache, express, redis-client
• Language: JavaScript
• Homepage:
• Size: 15.6 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Node-Redis-Cache

It is a NodeJS app which is using Redis to demonstrate caching. It consumes [Harry Potter](https://hp-api.onrender.com/api/characters) API for the demo purpose.

A middleware function is used that stores the data in Redis using a key-value pair.

```

// cache data in redis

const cacheData = async (req, res, next) => {

  try {

    const characterId = req.params.id;

    let redisKey = "hogwarts-characters";

    if (characterId) {

      redisKey = `hogwarts-character-${req.params.id}`;

    }

    const cacheResults = await redisClient.get(redisKey);

    if (cacheResults) {

      res.send({

        fromCache: true,

        data: JSON.parse(cacheResults),

      });

    } else {

      next();

    }

  } catch (error) {

    console.error(error);

    res.status(404);

  }

}

```

## Response without caching

![image](https://github.com/Syed007Hassan/Node-Redis/assets/104893311/59a38a6f-8b68-4918-9f3d-d0efbb4a5d31)

**Response time: 566 ms**

## Response with caching

![image](https://github.com/Syed007Hassan/Node-Redis/assets/104893311/20af96c0-5f5e-474b-a933-1a53a8d5b88a)

**Response time: 17 ms**