The goal of JavaMelody is to monitor Java or Java EE applications servers in QA and production environments. It is not a tool to simulate requests from users, it is a tool to measure and calculate statistics on real operation of an application depending on the usage of the application by users.
JavaMelody is opensource (LGPL) and production ready: in production in an application of 25 person years. JavaMelody is easy to integrate in most applications and is lightweight (no profiling and no database).
JavaMelody is mainly based on statistics of requests and on evolution charts.
It allows to improve applications in QA and production and help to:
It includes summary charts showing the evolution over time of the following indicators:
These charts can be viewed on the current day, week, month, year or custom period.
JavaMelody includes statistics of predefined counters (as of today http requests, sql requests, jsp pages and methods of business façades if EJB3, Spring or Guice) with, for each counter :
It also includes statistics on http errors, on warnings and errors in logs, on data caches if ehcache and on batch jobs if quartz.
An optional and independent collect server may be used if necessary to unload the application of storage management, and of reports generation and to centralize the data of clustered applications or of several applications.
JavaMelody users' group is at http://groups.google.com/group/javamelody (email: [email protected]).
Hudson "Monitoring" plugin with JavaMelody is available in Hudson management page and described here
主页地址:http://code.google.com/p/javamelody/