What is InfluxDB? It is a time series database thus deals with timestamped data points. It handles large amounts of data efficiently because of a faster data ingestion rate. Retires Data based on a Life Cycle policy (days, weeks). It uses Buckets(combo of database + retention policy) to store measurements(like a table in…

Basics of writing Asynchronous Codes in Node.js Here we will see the 3 most common ways to handle asynchronous methods. Through Callbacks: One of the most primitive and still widely used approaches. Example: Following is a simple example to print current time every 1000 milliseconds. function cb() { console.log(new Date().toLocaleTimeString()); } setInterval(cb…

Most frequently needed inbuilt modules. http/https: This module is used when you want to make and serve http requests. It is useful if you want to GET/POST/PUT data from a remote location, or if you want to build a server which serves these requests. Remember to use require(“http”) to use…

Debugging in node.js Using “V8 inspector” node.js now allows debugging codes outside their node process. Thus to debug your node.js code, just run the following command in your terminal. node — inspect myapp.js This will run your source code in debug mode. By default it runs on port 9229. If…

Node.Js is a very vast topic. Yet I have tried to crunch some of its core concepts in 4 parts. This should be enough to get your foot in the door of what is called the world of Node.Js. Prerequisites Basic knowledge of Javascript. Node.Js installed on your system Download…

Often we come across scenarios to retrieve a large number of data from a remote data source. In Javascript, operations like I/O, R/W happen in an asynchronous manner. Likewise our api requests which are http requests will also do the same. …

S3 is a scalable storage infrastructure from Amazon Web Services (AWS), and provides mechanisms to store and retrieve objects(files) through web services. The article includes steps to: i). Upload file(s) to S3 bucket with api using node.js and koa. ii). Downloading the uploaded files from S3, and archiving it. Prerequisites: …