Application Metrics with Yertl
A time series database is a massively useful tool for system reporting and monitoring. By storing series of simple values attached to timestamps, an ops team can see how fast their application is processing data, how much traffic they're serving, and how many resources they're consuming. From this data they can determine how well their application is working, track down issues in the system, and plan for future resource needs.
There have been a lot of new databases and tools developed to create, store, and consume time series data, and existing databases are being enhanced to better support time series data.
With the new release of ETL::Yertl, we can easily translate SQL database queries into metrics for monitoring and reporting. I've been using these new features to monitor the CPAN Testers application.
