https://washiul.com/A personal blog where I write about building backend systems in the real world. Scalable APIs, distributed systems, databases, infrastructure, and low-level engineering, based on hands-on experience with Java, Go, PostgreSQL, Docker, Linux, and AWS. 2026-01-08T16:54:18+06:00 Washiul Alam Shohan https://washiul.com/ Jekyll © 2026 Washiul Alam Shohan /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2025-12-11T20:39:00+06:00 2025-12-11T20:39:00+06:00 https://washiul.com/posts/go-websockets-part-1/ sohan

If you are building a standard CRUD application, suppose a to-do list, HTTP is all you need. The client asks the server for the data, the server provides it, and the transaction ends. It’s simple, stateless, and easy to scale. But think what the case will be if we were to build a chatting application, the requirements are fundamentally different. When a client sends a message to a room in the ...