Use Mongodb to persist metrics.
Merge pull request #2 from malcyL/msl-persistence-20111008

Use Mongodb to persist metrics.
Fix problem with threadpool size and dashboard url
Merge pull request #3 from malcyL/msl-threadpool-dashboard-url-fix-201310

Fix problem with threadpool size and dashboard url
removed volatile hash and refactored metric_handler for readability
Merge pull request #4 from mmmmmrob/refactoring

removed volatile hash and refactored metric_handler for readability