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This guide explains how to achieve hot code replacement in Spring Boot projects without restarting the application, covering three approaches—spring-boot-devtools, IntelliJ IDEA's HotSwap plugin, and JRebel—along with configuration steps, demo commands, and practical tips for faster development cycles.
This tutorial explains how to use the pure‑Java library docx4j in a Spring Boot application to automatically convert uploaded .docx files into high‑quality PDFs, covering Maven dependencies, a utility class, controller implementation, and platform‑specific font handling for Windows and Linux.
This guide explains how to use Spring's MDC to generate and propagate a traceId through HTTP requests, RabbitMQ messages, thread‑pool tasks, and XXL‑Job scheduled jobs, enabling unified log tracing without adding extra dependencies.
This article walks through building a Spring Boot project with ShardingSphere‑JDBC, covering Maven dependencies, YAML configuration, database setup, sharding rules, distributed ID generation, binding tables, and testing, providing a complete, hands‑on guide to implementing MySQL horizontal partitioning in a real‑world application.
Jeandle, the newly open‑sourced LLVM‑based JIT compiler from Ant Group, combines JVM and LLVM strengths to dramatically boost Java execution speed, explains JIT and LLVM fundamentals, outlines its architectural advantages, and details an ambitious roadmap toward full bytecode support and advanced optimizations.
Using a coffee‑shop metaphor, this article explains how Spring’s event‑driven model—event definitions, publishing, and listeners—enables scalable, decoupled backend systems, compares listeners with MQ, shares performance benchmarks, and provides best‑practice guidelines for reliable, high‑throughput applications.
This guide explains how to customize Spring Boot's startup banner using a banner.txt file, add ASCII art or dynamic variables, use image banners, and disable the banner via code or configuration, providing step‑by‑step instructions and examples.
This article explains what Podman is, highlights its key architectural differences from Docker, and provides step‑by‑step instructions for installing, configuring, and using Podman—including common commands, image handling, rootless operation, volume management, and integration tips for Linux environments.
This guide explains why IntelliJ IDEA shows a “Command-line is too long” error when launching Spring Boot projects, how the OS command‑line limit is exceeded by long classpath arguments, and step‑by‑step configurations—including JAR manifest and @argfile options—to resolve the issue permanently.
This step‑by‑step tutorial shows how to eliminate single‑point failures by deploying multiple service instances, registering them with Nacos, configuring Spring Cloud Gateway, and using the lb:// protocol to achieve automatic client‑side load balancing for resilient microservices.
