Incubator for a high level, TCP based, connection oriented API for fs2.io.net. See typelevel/fs2#3419 for details.

Specifically:

• Support both single and pooled connections.
• Health checking
• Proper idle/eof handling
• Detailed metrics describing pool state

Skunk's session and pool apis:

• Session: https://github.com/typelevel/skunk/blob/main/modules/core/shared/src/main/scala/Session.scala#L412-L431
• Pool: https://github.com/typelevel/skunk/blob/main/modules/core/shared/src/main/scala/util/Pool.scala#L48-L65

http4s:

• EmberConnection: https://github.com/http4s/http4s/blob/main/ember-client/shared/src/main/scala/org/http4s/ember/client/EmberConnection.scala#L27-L39

• If this functionality is incorporated in to fs2-io, it cannot depend on otel4s (as otel4s depends on fs2). Metrics would need to be exposed via an API that another library bridges to otel4s.
  • Maybe this is enough of a reason to keep fs2-cnxs as a separate library (and with an otel4s dependency)?