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redefine

3 articles · Page 1 of 1

Aug 21, 2026 · Backend Development

Arthas in Production: Diagnosing Spring Boot CPU Spikes, Memory Leaks & Latency Spikes

This article demonstrates using Arthas to diagnose a Spring Boot service with 100% CPU, memory leaks, and latency spikes, showing step-by-step commands like dashboard, thread, heapdump, trace, and watch to pinpoint dead loops, unbounded caches, and missing SQL indexes, plus emergency hot-patching with redefine.

ArthasCPU profilingJVM troubleshooting

0 likes · 17 min read

Arthas in Production: Diagnosing Spring Boot CPU Spikes, Memory Leaks & Latency Spikes

FunTester

May 5, 2020 · Backend Development

Mastering Arthas Redefine: Live Java Class Hot‑Update Made Simple

This article explains how Arthas's redefine command enables hot‑updating of Java classes at runtime, outlines scenarios where redefinition fails, offers tips for uploading compiled .class files, and provides a concrete code example demonstrating the process.

ArthasJVMJava

0 likes · 3 min read

Mastering Arthas Redefine: Live Java Class Hot‑Update Made Simple

Programmer DD

Feb 18, 2020 · Backend Development

How to Hot‑Update Java Code in Production Using Arthas

This tutorial demonstrates how to use Alibaba's open‑source Java diagnostic tool Arthas to decompile, modify, and hot‑replace a running class in a production environment, covering the jad, mc, and redefine commands, practical steps, and common pitfalls.

ArthasJADJava

0 likes · 8 min read

How to Hot‑Update Java Code in Production Using Arthas