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Java Architect Essentials
Java Architect Essentials
Sep 5, 2025 · Backend Development

Zero‑Downtime SpringBoot Updates: Share the Same Port Seamlessly

This article explains how to achieve zero‑downtime updates for SpringBoot applications by allowing two processes to share the same port, detailing the underlying Tomcat and ServletContainerInitializer mechanisms, providing a step‑by‑step implementation with code examples, and demonstrating seamless hot‑swap without service interruption.

HotSwapServletSpringBoot
0 likes · 9 min read
Zero‑Downtime SpringBoot Updates: Share the Same Port Seamlessly
Architecture Digest
Architecture Digest
Aug 23, 2024 · Backend Development

Using ArthasHotSwap for Fast Hot Updates in Java Backend Development

This article introduces the ArthasHotSwap plugin, explains why hot‑updating a few Java classes in a test environment can save minutes compared to full redeployment, and provides step‑by‑step instructions—including downloading, compiling, uploading bytecode to OSS, and applying the changes on the server—complete with code snippets and screenshots.

ArthasHotSwapBackend DevelopmentDevOps
0 likes · 3 min read
Using ArthasHotSwap for Fast Hot Updates in Java Backend Development
JD Tech
JD Tech
Jul 27, 2022 · Backend Development

Understanding Java ClassLoader, Custom ClassLoader, Hot Swapping, SPI, and Java Agent for Plugin Development

This article explains the Java parent‑delegation model, shows how to implement a custom ClassLoader for class hot‑swap and jar hot‑deployment, demonstrates Java SPI for dynamic service loading, and details building a plugin framework using Java Agent and Javassist for runtime bytecode enhancement.

HotSwapJavaAgentJavassist
0 likes · 30 min read
Understanding Java ClassLoader, Custom ClassLoader, Hot Swapping, SPI, and Java Agent for Plugin Development
JD Retail Technology
JD Retail Technology
Jun 14, 2022 · Backend Development

Understanding Java ClassLoader, Custom ClassLoaders, Hot Swapping, SPI, and Java Agent Plugin Framework

This article explains the Java parent‑delegation model, shows how to implement custom ClassLoaders for class hot‑swap and jar hot‑deployment, demonstrates SPI‑based class replacement, introduces Java Agent premain/agentmain mechanisms, and presents a plugin framework that combines SPI, Java Agent, and Javassist for dynamic enhancement.

HotSwapJavaJavaAgent
0 likes · 27 min read
Understanding Java ClassLoader, Custom ClassLoaders, Hot Swapping, SPI, and Java Agent Plugin Framework
Youku Technology
Youku Technology
Aug 31, 2020 · Backend Development

Java Dynamic Class Loading, HotSwap, and Multi-ClassLoader Strategies for YMAP Micro-Application Platform

The article explains how Java’s dynamic class loading, HotSwap, and multi‑ClassLoader architectures can overcome long restart times, detailing YMAP’s serverless‑style platform that uses isolated ClassLoaders, cgroup‑based multi‑tenant isolation, and rapid build‑to‑test pipelines to achieve second‑level deployments.

HotSwapJavaResource Isolation
0 likes · 10 min read
Java Dynamic Class Loading, HotSwap, and Multi-ClassLoader Strategies for YMAP Micro-Application Platform