Mohammad Kasim·Sep 16Low Level Design (LLD) of Payment AppsPayment apps like PhonePe, Google Pay, and payment platforms like Razorpay may look simple from the outside.
Pawara Gunawardena·Jul 31Observer Design PatternThe Observer design pattern, also known as the Publish-Subscribe or Dependents, is a behavioral design pattern.
Subham Sahoo·Apr 27Unpacking the Observer Pattern in JavaScript: A Tale of Classes, Functions, and Wedding BellsHave you ever wondered how your favorite app knows to send you a notification the second your team scores, or how a live stock ticker…A response icon1A response icon1
Noyan Germiyanoğlu·Apr 24Observer Pattern in Spring Boot — Build a Real Courier Tracking Workflow with Async Audit & ETA…In many real backend systems, one business event triggers multiple independent actions.
Kaizen Chandra·Feb 27Observer Design PatternObserver design pattern creates a one-to-many dependency, allowing objects (Observers/subscribers) to automatically receive notifications…
Jakub Neruda·Jan 15Crafting observable settings in C++Avoiding lifetime issues with deliberate API design and dependency inversion.
Saiful Islam Rasel·Nov 15, 2025Software Design Patterns and Principles — Part 14 (Observer Design Pattern)Let’s learn the software and OOP design patterns and principles!
Samith Ailapperuma·Nov 9, 2025Observer Design Pattern vs State Design PatternBoth the Observer and State design patterns may seem similar at first glance, as they are both used to handle internal state changes…
