Tagged articles

heapdump

5 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

Ops Development Stories

Feb 6, 2025 · Cloud Native

Automate Java OOM Heapdump Collection with a Kubernetes DaemonSet

This guide explains how to automatically capture Java OOM heapdump files using a DaemonSet that watches for heapdump.prof creation, compresses and uploads them to Alibaba Cloud OSS, and notifies developers via a WeChat bot, providing a scalable, non‑intrusive solution for memory‑leak diagnostics in Kubernetes environments.

GoOOMcloud-native

0 likes · 19 min read

Automate Java OOM Heapdump Collection with a Kubernetes DaemonSet

Java Interview Crash Guide

Aug 16, 2023 · Backend Development

How a Misconfigured JVM Parameter Triggered a Production OOM Disaster

A production outage at Company A was traced to an incorrect JVM -Xmn setting that matched -Xmx, causing the young generation to consume the entire heap and repeatedly trigger Full GC and OutOfMemoryError, a lesson on careful JVM tuning and script management.

JVMJavaOutOfMemoryError

0 likes · 10 min read

How a Misconfigured JVM Parameter Triggered a Production OOM Disaster

ELab Team

Aug 10, 2022 · Operations

How We Solved a Massive Memory Leak in a VSCode Extension Using llnode and heapdump

After releasing a new version of a VSCode extension, intermittent freezes were traced to a memory leak; the investigation used llnode and heapdump, tackled Electron version mismatches, extended DevTools parsing limits, and ultimately identified recursive socket callbacks as the root cause.

DevToolsMemory LeakVSCode

0 likes · 15 min read

How We Solved a Massive Memory Leak in a VSCode Extension Using llnode and heapdump

Node Underground

Sep 25, 2020 · Backend Development

How a Tiny JSON.parse() Bug Crashed a Node.js Server – Inside the V8 script_list Leak

This article recounts a real‑world incident where a simple JSON.parse() try‑catch block triggered a massive memory leak in a Node.js 12 application, explains how the V8 engine’s script_list retained orphaned script objects, and shows how tools like gdb, llnode and heapdump can be used to locate and fix the issue.

Memory LeakNode.jsV8

0 likes · 10 min read

How a Tiny JSON.parse() Bug Crashed a Node.js Server – Inside the V8 script_list Leak