dianping/cat

CAT is a distributed system monitoring and alerting platform that collects, processes, and visualizes telemetry data from applications. It provides comprehensive reporting on transactions, dependencies, errors, and system health, while offering configurable alerting mechanisms for real-time anomaly detection. The system supports multi-channel notifications, SSO integration, and flexible configuration management for domains, projects, and alert rules.

This period focused on the comprehensive refactoring of the CAT platform towards version 3.0, introducing a new MVC-based architecture for the home module and a new SPI for message tree serialization. The work expanded the system's capabilities by adding support for .NET and Python clients, Hadoop/HDFS storage, and a Chrome extension, while significantly enhancing the web interface with new reporting pages for state, problem, and dependency analysis.

119 changes

This period focused on the comprehensive expansion of the CAT monitoring system's reporting and alerting capabilities, introducing new dashboards for storage, heartbeat, and event metrics. The work also standardized the underlying MVC and model service architecture to support these new features, while adding extensive unit test coverage for the alerting subsystem.

92 changes

This period focused on expanding the CAT ecosystem by introducing official client libraries for Python, C, Go, Node.js, C#, and Erlang, alongside a Java agent for application monitoring. The backend was significantly enhanced with Hadoop-based message storage, new alerting and business analytics modules, and a comprehensive UI for log and browser monitoring.

53 changes

dianping/cat was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.