Sachin's DevLog
Back to Sachin's DevLog
Backend

Building a Rules Engine Instead of Hardcoding Business Logic

A backend software engineering guide on replacing hardcoded business logic if-else with a declarative, configurable rules engine (ECA pattern) in TypeScript.

Sachin Sharma
Sachin SharmaCreator
Aug 1, 2026
5 min read
Building a Rules Engine Instead of Hardcoding Business Logic
Featured Resource
Quick Overview

A backend software engineering guide on replacing hardcoded business logic if-else with a declarative, configurable rules engine (ECA pattern) in TypeScript.

Rules EngineBusiness LogicECA PatternBackend ArchitectureTypeScript
Sachin Sharma

Sachin Sharma

Software Developer & Mobile Engineer

Building digital experiences at the intersection of design and code. Sharing weekly insights on engineering, productivity, and the future of tech.

Previous Article

What Getting Promoted at ESPO in Under Two Months Actually Taught Me

I joined ESPO as a Frontend Developer Intern in July 2025. By September I was a full Software Developer. Here's what actually changed in those two months — and what I don't think it means.

Next Article

29% of Code Is Now AI-Generated. I Audited Mine to Check

Industry benchmarks vs codebase reality. Read an engineering audit of a production repository to analyze the ratio, quality, and churn of AI-assisted code.