Caching will be manage by using redis

CachingExample.js

const Router = require('koa-router');
const router = new Router();
var redis = require('redis');
var client = redis.createClient(6379, '127.0.0.1');

router.get('/search', async(ctx) => {
	var query = ctx.request.query.q;
	client.get(query, (error,queryResult) => {
		if(error){through error}
		if(queryResult){
			ctx.responce.json(JSON.parse(queryResult));
		}
		else{
			queryResult = await queries.search(query);
			// store the key-value pair (query:queryResult) in our cache
            // with an expiry of 1 hour (3600s)
            client.setex(query,3600, queryResult);
            // return the result to the user
            ctx.responce.json(JSON.parse(queryResult));
		}
	})
})