A highly professional Java public account
The article compares PostgreSQL and MySQL across data types, sequence handling, extensions, monitoring tools, replication, licensing, and MVCC implementation, showing why many Chinese tech giants prefer PostgreSQL for complex, high‑availability workloads while acknowledging MySQL’s strengths in simple web scenarios.
The article explains how Spring WebFlux replaces the thread‑per‑request blocking model of Spring MVC with an asynchronous, non‑blocking, reactive architecture that uses fewer threads for high‑concurrency I/O workloads, while also outlining its learning curve, ecosystem constraints, and practical decision guidelines for when to adopt it.
The article introduces the open‑source tool git‑rewrite‑commits, shows how to install Ollama, configure its cloud model, and run a single npx command that uses AI to rewrite messy Git commit messages and then force‑push the cleaned history.
This guide shows how to quickly add OpenTelemetry to a Spring Boot microservice, covering Docker‑based Jaeger setup, Maven dependencies, YAML configuration, automatic instrumentation, custom spans, production tuning, e‑commerce tracing examples, and common pitfalls to avoid.
This article reviews the most popular AI coding assistants for IntelliJ IDEA, comparing GitHub Copilot, Amazon CodeWhisperer, Tabnine, domestic options like Tongyi Lingma and CodeGeeX, as well as niche tools, and provides installation steps, pros, cons, and recommended tool combinations for different development scenarios.
This article demonstrates how to integrate Apache Doris, a high‑performance MPP analytical database, into a Spring Boot application as a drop‑in replacement for MySQL, detailing environment setup, Maven dependencies, configuration, entity mapping, repository, service and controller code, and performance testing that shows Doris’s superior real‑time query speed.
This guide explains why Java developers need profiling, introduces IntelliJ IDEA’s built‑in Profiler (powered by Async Profiler and JFR), and provides step‑by‑step instructions with screenshots for CPU, memory, and thread analysis to diagnose slow endpoints, high CPU usage, memory leaks, and concurrency bottlenecks.
The article explains how TCP provides reliable byte‑stream transport but lacks message boundaries, how HTTP adds structured semantics with headers like Content‑Length, and why RPC frameworks such as gRPC are introduced to make remote calls feel like local method invocations, especially in modern microservice architectures.
When a scheduled‑task server crashes, simply restarting it is insufficient; a robust solution must combine clustering, distributed locks, idempotent designs, checkpointing, and monitoring to ensure tasks resume correctly across non‑runtime and runtime failures, as detailed with SpringTask‑Redis and XXL‑JOB implementations.
The article introduces Maven mvnd, explains its daemon‑based architecture, shows benchmark results where multi‑module builds run 3.5–5.5 times faster (up to 10× for single modules), and provides step‑by‑step installation, configuration, PowerShell encoding fixes, and IDEA integration guidance.
