Our API connections are currently using the request library due to bugs in earlier versions of the native http module. We should investigate if those are fixed in 0.8 or 0.10, and then see if we can use a pool of persistent connections per worker. That should hopefully speed things up a bit by removing some latency, and give us control over the maximum concurrency we are requesting per worker.

See also:
http://nodejs.org/api/http.html#http_class_http_agent

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