hello all developers we create a Redis store to make server to best response to the client. Redis can maximize the response time of fetching data through server like express.
so , Redis is a super fast and efficient in-memory, key–value cache (hashing the data) and store. It’s also known as a data structure server, as the keys can contain strings, lists, sets, hashes and other data structures. keys will be unique.
npm install redis
const redis = require('redis');
//by default port 6379 and host localhost or 127.0.0.1
const client = redis.createClient();
const redis = require('redis');
const client = redis.createClient();
client.on('connect', function() {
console.log('Connected!');
});
so make sure you can install redis in your system.
const redis = require('redis');
const client = redis.createClient();
const axios = require('axios');
const express = require('express');
const app = express();
const USERS_API = 'Your Api Url';
app.get('/cached-users', async (req, res) => {
const data=await client.get('users')
try{
if (data) {
console.log('Users retrieved from Redis storage');
res.status(200).send(JSON.parse(data));
} else {
axios.get(`${USERS_API}`).then(function (response) {
const users = response.data;
//client.setEx('key',seconds,data)
client.setEx('users', 400, JSON.stringify(users));
console.log('Users retrieved from the API');
res.status(200).send(users);
});
}
});
} catch (err) {
res.status(500).send({ error: err});
}
});
const PORT = 5000;
app.listen(PORT, () => {
console.log(`Server started at port: ${PORT}`);
});
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