15249 sync.pool (#16103)

* use sync.pool for session

* added back to sync pool

* reverted change

* added a new line

* added back session object

* added back session object

* added back session object

* revert

* refactored into function

* added the session object back into the pool

* work in progress

* work in progress

* work in progress

* code review comments

Co-authored-by: Arjuna Marambe <arjunam@buildxact.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

wsapi/websocket_handler.go

@@ -29,6 +29,8 @@ func (wh webSocketHandler) ServeWebSocket(conn *app.WebConn, r *model.WebSocketR
 		return
 	}
 	session, sessionErr := wh.app.GetSession(conn.GetSessionToken())
+	defer app.ReturnSessionToPool(session)
+
 	if sessionErr != nil {
 		mlog.Error(
 			"websocket session error",