[apage43]

Except that's always the case. You mean if Clojure crashes before it queues up 50 docs and sends them, the docs in the queue are lost.

Durability is a concern when it means the integrity of your data is unknown. You'd probably be doing something like this in a bulk load, in which case you'd know where it crashed.

If this were queuing and batching inserts from many users it might be more of an issue (a user thinks something happened and it didn't), but realize that the at a queue size of 50 this performs at about ~5500 inserts/second. (And you can reduce this queue size if you don't need to insert that fast) This would affect users who happen to make their request within a roughly 0.18 millisecond window. If confirmation is still absolutely important, the post also links a version at the end that -does- wait for and return the IDs of the inserted documents from couchdb, guaranteeing the inserts have happened, and it still performs quite well.