Rails 3 and above includes a powerful instrumentation system, ActiveSupport::Notifications, which can be used to track performance and event information for all aspects of your application. Notifications are light-weight, easy to setup, and can be consumed by multiple subscribers (logs, audit trails, consolidated metrics, other parts of your application).

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SF Metrics Meetup

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Recorded talks from the SF Metrics Meetups.

meetup.com/San-Francisco-Metrics-Meetup/

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