Orbitz Worldwide, a leading global online travel company, has open sourced two monitoring tools Extremely Reusable Monitoring API (ERMA) and Graphite, a persistence and visualization component. ERMA is a home grown Java API and library that has been used in several web applications at Orbitz to capture monitoring statistics in the applications at run-time.
Developing Ruby and RoR apps might be easy - but what to do when something goes wrong, the interpreter misbehaves or memory leaks spring up. We look at the current options for taking a peek inside Ruby applications.
The newly released Mac OS X Leopard ships with the Ruby 1.8.6 and various Ruby libraries and tools installed. Leopard also includes DTrace probes for profiling Ruby, XCode and Interface Builder support and more.
InfoQ investigates how three companies recently collaborated to use DTrace, a powerful open source process introspection tool, to find and fix a substantial Rails latency issue.
DTrace is an open-source dynamic tracing framework originally written for Solaris 10 and coming soon to OS X, Linux and BSD systems. A Java API for DTrace is available, allowing you to run DTrace scripts and allowing you to present the output in a more meaningful way.