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Languages & runtimes · #java
Learn how to implement distributed tracing in Java microservices using OpenTelemetry and Jaeger to identify latency bottlenecks and visualize request flows.
Learn how JUnit 5's @RepeatedTest runs a test method multiple times, why it helps expose flaky behavior, and what trade‑offs to watch for.
Learn how to implement custom HealthChecks in Dropwizard to monitor critical dependencies and prevent silent failures in distributed systems.
Explains how to replace thread pools with virtual threads for I/O‑bound Java services, covering pinning risks, ThreadLocal limits, and verification steps.
When Java throws OutOfMemoryError: Java heap space, this guide walks you through a diagnostic workflow that maps symptoms to causes, applies fixes, and tells you when to ask for help.
Learn how to implement synchronous Unary RPCs in Java using gRPC and Protocol Buffers to ensure type-safe, high-performance communication between microservices.
A diagnostic guide for resolving common Thymeleaf failures, including TemplateNotFoundException, SpelEvaluationException, and silent rendering errors in Spring Boot.
Learn how to implement pagination in Hibernate using setFirstResult and setMaxResults to prevent OutOfMemoryErrors and avoid the common 'in-memory pagination' trap with join fetches.
Learn how to implement server-side pagination in Hibernate using setFirstResult and setMaxResults to prevent JVM OutOfMemoryErrors and optimize database resource usage.
opentelemetry
jaegertracing
junit
dropwizard
fiber
grpc
thymeleaf
hibernate
foundation