Backend Engineering Tutorials

Spring Boot Did Not Leak Memory. Redis Had No Exit

Redis memory kept growing in Spring Boot because cache keys had no TTL, maxmemory, eviction policy, or namespace-level monitoring.

A production-style Java file handling lesson about Files.move(), reused filenames, race conditions, and safer file lifecycle design.

Learn how to build a multi-step form wizard in Angular 20 using PrimeNG p-steps and Reactive Forms with validation and logic.

Learn how to use Spring AI Advisors to manage context, logging, and conversational memory in Spring Boot AI applications.

Learn how to build an e-commerce product catalog using Angular 20 and PrimeNG with cards, filters, carousel, and cart logic.

Use Spring AI message metadata to trace context, validate inputs, and debug structured AI workflows in Spring Boot.

Learn how to build a real-time reactive chat using Angular, PrimeNG, and Spring WebFlux with SSE streaming and Flux.

Spring AI streaming with Spring Boot, Flux, and SSE, including blocking-call risks, client behavior, and production debugging.

Learn how to build a reusable dynamic form generator in Angular 20 using PrimeNG and JSON schemas with validation and layouts.

Learn how to build a Spring Boot file download API using WebClient. Stream large files, avoid memory limits, and handle temp storage.