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Define a global OAuth2 security scheme once, map it with @SecurityRequirement, and verify the spec and UI. This guide shows the exact annotations, a working config, and common pitfalls to avoid.
Thymeleaf fragments let you build reusable, parameterized page components from plain HTML files. Learn th:replace vs th:insert, a worked card example, and the pitfalls.
A diagnostic guide for Spring Data JPA LazyInitializationException: recognize the condition, trace the transaction boundary, use a cause table, ordered checks, targeted fixes (fetch joins, DTOs, open-in-view), and escalation criteria for pagination and async paths.
Spring Boot's TemplateInputException often points to missing or misnamed templates, bad view names, or faulty expressions. This guide gives a step‑by‑step diagnostic flow, how to confirm the template is in the JAR, and quick fixes.
Learn how to model entities and relationships with JHipster JDL and use incremental generation to preserve custom backend and frontend code.
A Scalingo PostgreSQL read replica only helps if your app routes reads to it deliberately. Here is a two-DataSource Spring Boot pattern, the lag trade-off, and how to verify traffic actually moved.
Learn how to diagnose and fix pagination failures in JHipster generated entities, from verifying JpaRepository extensions to correcting Pageable implementation in the service layer.
Tomcat behind a load balancer logs the proxy's IP, not the visitor's. RemoteIpValve restores the real client address from X-Forwarded-For and the scheme from X-Forwarded-Proto — if you configure the trust regex and valve ordering correctly.
Learn how Vaadin Flow’s @Route annotation and programmatic navigation let you map views to URLs, pass parameters safely, and update the browser history without full page reloads—plus the trade‑offs to watch for in memory and clustered environments.
swagger
thymeleaf
hibernate
jhipster
scalingo
vaadin