Senior Tony

Oct 12, 2024 · Backend Development

When Monolith Meets Microservices: API Composition vs CQRS for Complex Queries

This article compares API composition and CQRS patterns for handling distributed queries in evolving monolithic systems, illustrating their workflows with e‑commerce and online‑education examples, discussing performance trade‑offs, implementation details using Canal and ElasticSearch, and offering practical guidance on when to adopt each approach.