Spring Boot Troubleshooting — When Things Break in Production

What you get

A production troubleshooting manual for Spring Boot — written from real incidents, not docs.

You’ll learn how to:

• Diagnose startup failures and bean creation errors
• Find and fix memory leaks (heap, metaspace, threads)
• Debug @Transactional and proxy-related issues
• Handle Hikari pool exhaustion and DB timeouts
• Understand logs that actually matter
• Use health checks, readiness probes, and diagnostics

Who this is for

• Backend engineers running Spring Boot in production
• Developers tired of “works on my machine” problems
• Anyone who had to debug a broken Spring app at 3 a.m.

Who this is NOT for

• Beginners learning what Spring Boot is
• People looking for a full Spring tutorial

Format

• PDF
• ~12 pages
• Real error examples and fixes
• Updated for 2025