I have built lots of NodeJS apps and scaled them to millions of requests. The most common problem you will see is Garbage collection pauses and memory leaks which sometime gives random distribution of time response of requests. The problem is not the GC but the way you have written code.

Indexing in Database is a wide topic. Database indexing plays a important role in your query result performance. But like everything this too has a trade off. I know and assumed that you already worked with Indexing and you indexed your few field of your database table, But in this post I will explain a bit tho I’m not a good writer will try to finish within short. What is Indexing, How it works etc.

In react-native when we use any external library where play-services are required like react-native-maps for google map there is an android project into this library where play-services v8.x.x included into gradle and in your project you are using play-services v9.x.x for another reason

There are now two new ways to declare variables in JavaScript: let and const.The only way to declare a variable in JavaScript was to use the keyword var. To understand why let and const were added, it’s probably best to look at an example of when using var can get us into trouble.

Two-way binding is simply a way to sync data to a view and vice versa (mvvm pattern). One-way data binding refers to the design pattern found in component based frameworks, where a child component cannot modify data passed by a parent component, as that creates spaghetti code.

MongoDB’s geospatial indexing allows you to efficiently execute spatial queries on a collection that contains geospatial shapes and points. This tutorial will briefly introduce the concepts of geospatial indexes, and then demonstrate their use with $geoWithin, $geoIntersects, and geoNear.

There is three general ways of integrating C++ code with a Node.js application - although there are lots of variations within each category like: Automation, Shared Library and Addon. Each of them has advantage and disadvantage as well

Javascript Object.assign allows you to copy one set of an object non-inherited properties to another.It has a signature of Object.assign(target, …sources). The target object is the first parameter and is also used as the return value. Object.assign() is useful for merging objects or cloning them shallowly. code sample below :

Though I’m a big fan of ES6 and always I try to do everything with ES6 instead of ES5 but sometimes have to write JS code into ES5. That’s why I try to make the ES6 flavour into ES5 codes.

In Microservice architecture there is a number of benefits. I’ll point some major benefits of microservice rather than monolithic approach, what I got from my experience.

Those days are gone when people didn’t expect information for momentary access to data. Nowadays expectation everywhere is real-time action and result. Something is happened? not 1 day ago, not even 1 min ago but just now. Being notified constantly on any change of data points a bit critical from many application nowadays. So the upcoming MongoDB3.6 introduces a new $changeStream aggregation pipeline operator.

One really exciting thing for JS Developer that last week was dropped Node 7.6 which brought support for async/await. If you haven’t heard of async/await before, it’s an amazing update to JavaScript (ES2017) that allows us to write synchronous looking asynchronous code without nested callbacks or even chained .then() promises.

JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language. Inside a host environment like a web browser.