This article explains how to build a Spring Boot hot‑patch loader that uses Java agents and dynamic class loading to apply runtime patches—such as Spring Bean, plain class, or static method replacements—allowing urgent bug fixes in production within minutes without restarting the service.
This article walks through the motivation, design, implementation, and best‑practice deployment of a Spring Boot hot‑patch system that lets developers dynamically load and apply patches to beans, classes, and methods in production within minutes, avoiding lengthy release cycles.
This article examines Ele.me's evolution from a simple MVC mobile app to a modular, decoupled EMC architecture, incorporating hybrid solutions and React‑Native hot‑patching to achieve high performance, low coupling, and rapid updates for billions of users.
The article investigates intermittent CPU usage spikes on Linux servers caused by a kernel cputime bug, explains the root‑cause analysis, describes a cold patch applied to newer kernels, and details a hot‑patch solution that safely resolves the issue across thousands of production machines.
This article explains the design, components, and implementation of UCloud's application hot‑patch framework, covering its motivation, safety checks, multi‑thread support, and how the Creator, Loader, and Core Runtime work together to apply, manage, and roll back patches without restarting services.
This article explains a technique to automatically generate hot patches for any function in a Linux ELF application by comparing original and patched object files, extracting changed sections, resolving symbols, and validating the patch with tools like objdump and gdb.
The article analyzes Android ART's method‑inlining optimizations, explains how they interfere with popular hot‑patch frameworks like Tinker, and describes the practical workarounds Tinker adopted to maintain patch compatibility while mitigating performance impacts.
This article chronicles WeChat's journey developing the Tinker hot‑patch framework, detailing the technical hurdles of native vs. Java approaches, performance optimizations, platform‑specific issues, and the rigorous testing that enabled a high‑availability solution for billions of Android devices.
This article recounts WeChat’s two‑year journey developing the open‑source Tinker hot‑patch framework for Android, detailing the challenges of native vs Java approaches, performance‑critical DexDiff algorithms, platform‑specific issues on Dalvik, ART, and Android N, and the solutions that achieved a high‑availability, low‑overhead patch system.
This article reviews the evolution of Android hot‑patch technologies, compares major solutions such as Dexposed, AndFix, Qzone, and WeChat’s own Tinker, and explains when and how to apply hot patches for lightweight updates, remote debugging, and data‑driven testing.
This article traces Ele.me's mobile app evolution, detailing the shift from a simple MVC structure to a decoupled module system, the EMC hybrid architecture, and finally a React‑Native plus Hot‑Patch strategy that balances rapid iteration with high stability for billions of users.
