APM / distributed tracing
CAT is a distributed real-time APM platform that collects metrics, transactions, events, and traces from multi-language clients, provides realtime reports, and alerts on performance issues.
Same problem, same approach. Swapping one for another is a config change, not a rewrite.
Choose it if you want a standalone agent-and-collector APM with its own web UI and no Meituan-specific middleware integrations.
Scouter is an open source APM (Application Performance Management) tool.
Solves the same problem with a different architecture or at a different layer. Expect to rewrite the integration.
Choose it to get distributed tracing without code changes via eBPF/OpenTelemetry instead of instrumenting with CAT client libraries.
Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF
An earlier or more limited way to do the job. Still the right call when you need something small, proven, or CPU-only.
Choose it for lightweight in-process monitoring of a single JavaEE app when no central aggregation or distributed alerting is needed.
JavaMelody : monitoring of JavaEE applications
These projects were analysed and named cat among their alternatives. The relationship is not symmetric — how cat rates them is a separate judgement, made when cat is analysed in its own right.
calls cat “Earlier client-library-based APM with multi-language support but invasive integration and slower current development; choose if you're already committed to CAT's protocol/ecosystem.”
APM, (Application Performance Management) tool for large-scale distributed systems.
calls cat “Choose only for legacy Java/Chinese-ecosystem stacks already relying on CAT's agent model; it is stale and lacks session replay/full-stack frontend monitoring.”
highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.