Automaitc smoothing for atentiosn prioritisation https://github.com/papers-we-love/papers-we-love/blob/master/time_series/ts-asap.pdf
- datadog
- stackdriver, http://collectd.org/
- statsd
- https://www.datadoghq.com/blog/announcing-apm/
- https://github.com/basecamp/trashed/pull/12/files
- https://github.com/DataDog/dogstatsd-ruby
Thread.list.select {|thread| thread.status == "run"}.count
- logstash
- filebeat
- fluentd
- https://github.com/opentracing/specification/blob/master/specification.md
- https://github.com/opentracing/opentracing-ruby
- https://github.com/instana/ruby-sensor
- https://github.com/instana/ruby-sensor/blob/master/Tracing.md