db-connect

Does anyone have any insights/experience with cold starts and db-connect[1]? I haven't connected a worker to a datastore (sql or kv), so data and start-times might be orthogonal to each other, but was curious what people's experiences are. 1: https://github.com/cloudflare/db-connect

I cannot find this in the documentation (I'm sure it's there somewhere) so let me ask here. How long does a function stay warm? As in, a client makes a request that invokes a function, the function processes the request and responds to the client. Now what? Does the same "instance" of a function stay alive to handle another request for a certain period of time or is it immediately released? I'm asking because sometimes it's necessary to do some expensive work in order to respond to the request and doing the same work on every invocation is not necessary. For example on AWS Lambda, one of our functions launches a Chromium instance which can take a few seconds, but because the function can stay alive after a request is done, the same Chromium instance is immediately ready on the next function invocation. Other use cases involve e.g. connect