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Languages & runtimes · #java
Attach the Datadog Java Agent with -javaagent, configure unified service tags and sampling, add custom spans with @Trace, and verify traces end to end in the Trace Explorer.
Eclipse's built-in LSP support replaces legacy per-language plugins for TypeScript, Python, YAML, and more. This post shows when to use LSP versus JDT, a concrete Gradle setup for mixed Java/TypeScript projects, and the memory trade-offs to watch.
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.
Large Docker images slow CI pipelines and increase cloud costs. Multi‑stage builds separate compile‑time and runtime dependencies, cutting image size by 3–10×. This guide shows a concrete Maven‑to‑OpenJDK example, explains trade‑offs, and gives you the steps to get started.
A diagnostic workflow for Hibernate N+1 selects on paginated endpoints: confirm the query count, identify the triggering association, and apply JOIN FETCH, two-query pagination, or entity graphs without falling into the in-memory pagination trap.
Learn how Akka Typed Actors replace unsafe runtime casts with compile‑time message safety, using a simple echo actor example and practical migration tips.
Learn how to create short‑lived, signed URLs for GCS objects using a service account key, with a Java example, limits, and common mistakes.
Replace repetitive @Test methods with a single @ParameterizedTest fed by @CsvSource and a custom ArgumentsAggregator. Keep reports readable with descriptive name patterns, avoid silent converter failures, and know when separate tests communicate intent better.
When a Processing sketch opens a black window or runs at a crawl, the culprit is often the renderer choice or how resources are loaded. This guide walks through the most common symptoms, the root causes, a step‑by‑step check list, and practical fixes – all with version‑aware examples.
datadog
thymeleaf
docker
xd
hibernate
akka
scala
junit