6 Spring Boot Patterns Every Java Developer Should Know (with working code)

Prashant Maurya — Sun, 28 Jun 2026 08:30:48 +0000

Most tutorials teach you how to build a Spring Boot app.
But nobody tells you what to do when it breaks in production.

I built a repo that covers exactly that 👇

What's inside?

Each pattern has:

When a downstream service fails repeatedly, stop calling it.
Prevent cascading failures across your entire system.

Control how many requests a client can make per minute.
Protect your API from abuse and traffic spikes.

Network calls fail sometimes. Automatically retry with backoff
instead of returning an error on first failure.

User clicked "Pay" twice? Same request came twice from network retry?
Process it only once — return cached response for duplicates.

Same data requested 1000 times? Don't hit the DB 1000 times.
First call fetches from DB, rest served from cache instantly.

One slow service consuming all threads?
Isolate each service into its own thread pool — failures stay contained.

More patterns coming soon — Health Check, Saga, Throttling.

Feedback welcome! ⭐ Star if it helped you.