* use diff chan
* correctly use the buffered file writer
* use value from source
* reorder fields
* add tests and update
* Fix issue with buffer slices growing
* fix test
* correctly use the buffered file writer
* use value from source
* reorder fields
* fix
* add singleton
* use shared pool
* optimize
* rename and cleanup
* add metrics
* add print
* rebase
* remove extra inc
* add metrics for checkout time
* add comment
* use microseconds
* add metrics
* add metrics pkg
* add more metrics
* rever test
* remove fields
* fix
* resize and return
* update metric name
* remove comment
* address comments
* add comment
ahrav
5702d2e199