API Authentication: A Complete Guide

APIs are the backbone of modern web and mobile applications. But with great power comes great responsibility — especially when it comes to securing your APIs. That’s where authentication comes in. What is API Authentication? API authentication is the process of verifying the identity of the client or user who is trying to access an … Read more

A Complete Guide to GraphQL for Backend Developers

GraphQL is a query language and runtime for APIs developed by Facebook in 2012 and open-sourced in 2015. It provides a more efficient, flexible, and powerful alternative to REST. Instead of multiple endpoints, clients access all data through a single endpoint and explicitly define what data they need. This article offers a complete overview of … Read more

Understanding gRPC: A Modern Framework for High-Performance Communication

In an era where microservices dominate modern application architecture, efficient communication between services is more important than ever. gRPC, short for google Remote Procedure Call, is a high-performance, open-source universal RPC framework developed by Google. It facilitates client-server communication with features that make it ideal for building distributed systems. What is gRPC? gRPC is a … Read more

Remote Procedure Call (RPC)

In distributed computing, Remote Procedure Call (RPC) is a powerful protocol that enables a program to execute a procedure (function or subroutine) on another address space—typically on a remote server—without the programmer needing to code the details for this remote interaction explicitly. RPC abstracts the complexity of network communication, making it appear as though the … Read more

Understanding JWT (JSON Web Token)

JWT (JSON Web Token)

JWT is widely used in APIs, single-page applications, mobile apps, and even microservices due to its compact, secure, and stateless nature. Basic Authentication Problems with Basic Authentication: Token-based Authentication (JWT) To solve the limitations of Basic Authentication, we use JWT – the most common token-based solution. JWT (JSON Web Token) is an open standard (RFC … Read more

Understanding OAuth 2.0: A Comprehensive Guide

OAuth 2.0 is the industry-standard protocol for authorization. It allows third-party applications to gain limited access to a user’s resources without exposing their credentials. Developed by the IETF OAuth Working Group, it has become the backbone of secure delegated access on the web. From social login (like “Sign in with Google”) to accessing APIs in … Read more

Understanding APIs: A Comprehensive Guide

API

APIs (Application Programming Interfaces) play a central role in enabling communication between software systems. From retrieving weather data to enabling online payments, APIs act as bridges between different applications. Whether you’re building a mobile app, web service, or enterprise solution, understanding APIs is crucial. What is an API? An API is a set of rules … Read more

REST vs. SOAP: A Comprehensive Comparison

Rest

When it comes to web services and APIs, two major communication protocols dominate the landscape: REST (Representational State Transfer) and SOAP (Simple Object Access Protocol). Both serve the same fundamental purpose—enabling communication between different systems over a network—but they differ significantly in structure, implementation, and use cases. What is REST? REST is an architectural style … Read more

API Maturity Model

The Richardson Maturity Model (RMM) is a framework for evaluating the maturity of RESTful APIs. It was introduced by Leonard Richardson to classify APIs based on their adherence to REST principles. The model consists of four levels (0 to 3), where higher levels indicate a better alignment with RESTful architecture. Levels of the Richardson Maturity … Read more