Most apps run fine on localhost. But the moment real traffic hits, secrets leak, services fall over, and logs become noise. Let’s fix that. Press enter or click to view image in full size “Image created by ChatGPT” Getting a Spring Boot app to start is easy. Getting it to run reliably in production, under load, after failures, with real users and real data — is a completely different problem. Most teams ship their app to a cloud server, set the profile to prod, and call it a day. Then come the outages. Then come the 3AM alerts. Then comes the painful realization that “it works on my machine” and “production-ready” are not the same thing. This article walks through the real gaps, configuration, security, observability, database management, and resilience :- with actionable code you can adopt today. Secrets and Configuration Management Hardcoding credentials in application. properties is the single fastest way to get your company’s database credentials pushed to GitHub.…