Designing a Parking Lot System involves the use of various design patterns to structure the system in a way that is flexible, scalable, and easy to maintain. In this case, the Parking Lot System is built to manage parking spots, vehicles, parking tickets, and payment modes. Requirment 1 Solution Identify key objects/classes in the system. … Read more
Class Diagram is widely used in object-oriented programming to visualize and design the structure of software systems before writing any code. What is a Class Diagram? A Class Diagram is a type of static structure diagram in the Unified Modeling Language (UML) that describes the structure of a system by showing its classes, attributes, methods, … Read more
Exception Bad Practice Recommended (Good Practice) Way 1 Way 2 Catching a too general Exception is generally considered a bad practice because: Idea Doc String format
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
Cross-Site Scripting (XSS) is one of the most common and dangerous security vulnerabilities found in web applications. It allows attackers to inject malicious scripts into otherwise benign and trusted websites. When unsuspecting users visit these sites, the malicious scripts execute in their browsers, potentially compromising sensitive data or hijacking user sessions. What is XSS? XSS … Read more
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
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
Whether you’re browsing the web, sending a message, or playing an online game, sockets are the underlying technology enabling devices to communicate over a network. What is a Socket? A socket is an endpoint for sending or receiving data across a computer network. Think of it as a two-way communication pipe connecting two programs—one running … Read more
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
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