[adolgert]

These are great ideas. I told Valentin to drop by. Because DAS is an aggregator with an expert-system style query language, there is sharing among the Python services for caching. It's the caching that makes async code a good option. Preforking might work against this without significant increase in complexity in order to communicate with a single local cache. Remember that this is a web service for the Large Hadron Collider. Nothing about that is small.