Rule Engine with Node.js
🚀 Building a Rule Engine with Node.js By Sayyed Mohammad Adil In today’s modern applications, handling complex conditions and business logic directly in the codebase can make systems rigid and hard to maintain. This is where a rule engine comes in handy — allowing us to separate rules from logic and make systems more flexible, scalable, and adaptable. In this article, I’ll walk you through building a simple rule engine using Node.js , with support for conditional logic, custom actions, and contextual evaluation — all defined in JSON. 🧠 What Is a Rule Engine? A rule engine is a system that evaluates a set of conditions (rules) against input data and determines which actions to execute. It’s widely used in: 🛒 E-commerce (discount rules, cart promotions) 🏦 Banking (loan eligibility, fraud detection) 🛂 Access control systems ⚙️ Workflow automation and approvals By using a rule engine, you can let non-developers modify system behavior without touching app...