Cache

yarn add node-cache

import "dotenv/config";
import NodeCache from 'node-cache'
 
const myCache = new NodeCache({
    checkperiod: 60 * 10 ,// In seconds, check every 10 mins
});
 
// Skipped...
 
app.get("/add", function (req: Request, res: Response) {
    let count: number | undefined = myCache.get("count");
 
    if(count === undefined){
        count = 1;
    }
    else{ // Found, make Inc
        count += 1
    }
 
    myCache.set("count", count)
 
    // (Optional) Set a time out time by 5 mins
    //  myCache.set("count", count, 60 * 5)
 
    res.json({
        currentCount: count
    });
});