pouchdb/pouchdb — pull request #2566 by calvinmetcalf (2014-08-04 13:39:14+00:00)
Title: (#2553) - parallelize bulkDocs for leveldb

it sets an upper limit (set to 50) of simultaneous writes to have in progress, and starts a new one if the current ones are bellow the limit, turned off if new_edits = false as that can effect the same doc multiple times, we may want to switch that to a check for dup doc ids