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In Lambda and Cloud Functions you can open a connection with a database (or anything else) and it will stay alive across invocations of the same underlying cont

In Lambda and Cloud Functions you can open a connection with a database (or anything else) and it will stay alive across invocations of the same underlying container. Not sure how Cloudflare workers behaves here, but from their docs they recommend global variables a way to persist state, so perhaps an outbound TCP connection will stay alive across invocations of the same V8 "process".

kentonv 9y ago
Workers only support HTTP requests, not raw TCP. So, no, at present you can't hold a database connection open, though you can make requests to HTTP-based storage APIs available from any number of providers.
- tmzt 9y ago
  What about grpc which requires additional trailers but is still http2?
- siscia 9y ago
  Thanks, I knew it doesn't work but I didn't dig down enough to reply to the previous comment. My use case was to contact Redis and I wasn't able to maintain a connection open.