Build a Real-Time Dashboard with Python, FastAPI, and WebSockets
Your Dashboard Is Lying to You (And Polling Is Why) Every five seconds, your frontend fires a request. The server wakes up, queries the database, seri…
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WebSocket in Spring Boot, Explained Simply
Stop Polling. Your Server Already Knows the Answer. There's a pattern that shows up in codebases more often than it should: a frontend making repeated…
Streaming Responses in Next.js App Router — Server-Sent Events and ReadableStream
Your API Isn't Slow. Your Response Strategy Is. There's a class of bug that never shows up in your performance benchmarks but destroys user trust ever…
A Banking API Is Not Just CRUD: What Building a Money-Movement Ledger Taught Me
A Banking API Is Not Just CRUD: What Building a Money-Movement Ledger Taught Me I thought a banking API would be mostly CRUD. Make an account. Read a …
Kafka is not a queue — and treating it like one will wreck your system
Stop Treating Kafka like a queue! A story about silent lag, vanishing messages, and the mental model shift nobody warns you about. You integrated Kafk…
Building a Lean, Single-Worker Broken URL Monitor for Data Pipelines
The Technical Problem: Websites Drift, Pipelines Don't Know Long-running scraping pipelines have a structural assumption baked in: the URLs you config…