🧩 Go middleware: turn your tangled handlers into clean, composable magic.

In 2025, no one wants to see if authCheck... scattered everywhere.
🔥 Instead, wrap once and reuse forever:

✅ Add request IDs automatically
✅ Rate limit without global locks
✅ Retry flaky clients with backoff & jitter
✅ Validate HMAC signatures before your logic even runs
✅ Build TCP echoes with word counters (middleware isn't just for HTTP!)

💡 Chain them in one line. Add or remove features like LEGO bricks.

https://levelup.gitconnected.com/network-middleware-in-go-hands-on-guide-2025-750740533caf