# javamelody/javamelody

JavaMelody : monitoring of JavaEE applications

Repository: https://github.com/javamelody/javamelody
Canonical: https://ross.abutalabs.com/products/javamelody
Language: Java
License: Apache-2.0
License Family: permissive
Topics: performance, monitoring, metrics, apm
Last push: 2026-07-27T13:25:00+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 94, release rhythm 85, longevity 100
- inputs: {"age_days": 4091, "days_push": 37, "days_rel": 101, "gap_med": 27, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3039, forks 752 (observed 2026-08-28T04:07:39.212136+00:00)

## What it is
JavaMelody is an open-source library for monitoring Java and Java EE applications in QA and production environments. It collects and visualizes real-time metrics such as HTTP requests, SQL queries, CPU, and memory usage through a built-in reporting UI.

## Use cases
- monitor java application performance in production
- track slow sql queries in a java ee app
- get apm metrics without heavy infrastructure
- visualize http request response times
- monitor memory and cpu usage of a jvm
- diagnose performance issues in qa environments

## When to choose
- you need lightweight, embedded monitoring for a Java or Java EE application
- you want an APM-style dashboard without deploying external agents or servers
- you need to profile SQL queries and HTTP requests in production with minimal setup

## When to avoid
- you need distributed tracing across microservices with OpenTelemetry-compatible output
- your stack is not JVM-based
- you require full-featured commercial APM with alerting and anomaly detection

## Facets
- artifact type: library
- maturity: active
- function: monitoring, tracing
- domain: monitoring, backend, performance
- platform: jvm
- tags: apm, java-ee, application-monitoring, production-monitoring, devops, web-server

## Member repositories
- javamelody/javamelody (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:39.212136+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:46:51.090576+00:00, confidence not recorded.
  - readme: https://github.com/javamelody/javamelody (fetched 2026-08-28T04:07:39.212136+00:00, sha 3de7b29c45d5)
- Data as of 2026-08-30T08:39:29.467469+00:00.