What are the ACID properties in Database Systems?

ACID stands for Atomicity, Consistency, Isolation, and Durability. It is a set of database properties(rules) which transactions must obey to maintain the integrity and consistency of a database. In this article we'll take a look at each ACID property.

Advice to Junior Software Engineers – from a Junior Engineer

As a Junior Engineer you're at the baby stages of your career - learning a lot, and full of passion. Recognizing that this is a time for growth you may ask yourself "what are the things that I can do during this important time in my career to help me along my journey?". Here are…

Caching in NodeJS with Redis

Speed performance is critical in modern day applications. Most of the times your application may have to make requests to an endpoint/server to get some data. Or your application may frequently request a specific dataset. Depending on the size of your dataset a long with other things like query database and network speed, the speed at which your application can fetch certain data to display to users may get slower over time (as data increases). This is where caching comes in handy and can dramatically improve your application's speed.

JS call, bind, and apply methods

Each JavaScript function has access to the this keyword. The this keyword references the object to which the function belongs (remember, everything in JS is an Object). The value of the this keyword is determined by how/where the function was executed. This means that if we are not careful we can lose the scope of what this is actually pointing to. Luckily, all JavaScript function object has access to some very special methods which we can use to explicitly state what this should reference. These methods are bind(), call(), & apply(). In this article we take a refreshing look at the bind(), call(), & apply() methods. Enjoy!

Creating JS objects that has no prototype

We know that All JavaScript objects inherit properties and methods from a prototype. For Example: Date objects inherit from Date.prototypeArray objects inherit from Array.prototype What if you want to create an Object that does not have a prototype? Here's a neat little way to do it: const blankObject = Object.create(null) When creating objects using Object.create(),…

Let’s Create A URL Shortener

Chances are you've heard about or used URL shortening services like bitly, and tinyurl. These services allows you to enter long (and quite ugly) URLs and in turn gives you a very short (more appealing) link which you can use instead of the long URL. Shorter links takes up less space and are easier to share and type

JavaScript Objects – Basics

A JavaScript object is a variable which can contain many values. These values can be represented using name:value pairs (name and value separated by a colon). These named values are either referred to as properties or methods, depending on what's stored in them. OBJECT PROPERTIES Most objects contains at least one property. Properties describes the…

Securing Node.js Applications with JSON Web Tokens(JWT)

Security is a critical component of most modern web applications. As you progress through your career, you will develop more and more applications which requires some level of security, namely authentication and authorization. One way to handle security in your application in through the use of JSON Web Tokens (JWT) which we'll discuss in this article

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