- Java developers
- maintenance teams
- companies with Spring Boot or legacy Java systems
Backend Java
Java and Spring Boot
This hub is for teams that maintain or evolve real Java systems. It connects production APIs, error handling, logging, dependency updates, architecture decisions and legacy modernization without assuming a full rewrite is always the answer.
- When updating Java, Spring Boot or dependencies reduces operational risk.
- How to investigate 500 errors and slow APIs with evidence instead of guesses.
- How to modernize legacy Java without stopping business operation.
- Which logs, tests and deployment checks are needed before changing critical flows.
Reading path
Start with the strongest context already available in the portal.
Some deeper references still point to Portuguese source articles while the full English migration continues. The English hub itself gives the decision map and the language relationship stays explicit.
Java 25 LTS and modern programming
Portuguese article about modern Java decisions and Spring Boot context.
Open referenceInvestigating 500 errors in Spring Boot
Portuguese troubleshooting guide for backend failures.
Open referenceJava dependencies, SBOM and safe updates
Portuguese article about dependency risk and update discipline.
Open referenceHow to use this hub
Treat this page as a decision map. The purpose is to help you name the problem before choosing a framework, vendor, refactor or automation. When the topic is clearer, the linked material becomes easier to interpret and compare.
The English migration is intentionally additive: the Portuguese portal remains stable, and each English page receives its own route, canonical URL and language alternates.
Terms to align before going deeper
FAQ
Common questions before acting on java and spring boot.
When should a Java system be modernized?
Modernization is useful when support, security, deploys, dependencies or change speed are creating risk. It should start with mapping critical flows and validating smaller changes.
Should a legacy Java system be rewritten?
A rewrite is risky when business rules are not documented. Incremental modernization usually works better until the domain, data and operational constraints are clear.
What makes a Spring Boot API production-ready?
Clear contracts, validation, predictable errors, logs, authentication, deployment checks, rollback criteria and a basic observability routine.
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