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There is a lot going on in that cookie cutter. The “transaction” library for transaction management, wired into Pyramid with pyramid_tm, wired into SQLAlchemy with zope.sqlalchemy. Works nicely for Pyramid, but I don’t know how that translates to Flask.

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Think on it like a middleware that wraps a transaction. It's fine, till you start consuming other Io based services (elastic/solar/...) And you find that this blocks one connection per request..

Doesn't, I wanted to show how it can be wired to request.

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