[FLINK-26197] Allow playground egress to keep connection open and push messages

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: statefun-3.2.0, statefun-3.3.0
• Component/s: Stateful Functions
• Labels: auto-deprioritized-major auto-deprioritized-minor playground
• Assignee: Unassigned
• Reporter: Till Rohrmann
• Created: 16/Feb/22 18:32
• Updated: 21/Aug/23 10:35

Description

In order to improve the getting started experience it would be nice if the playground egress can keep connections to clients open and push new messages eagerly. Moreover, we could keep all messages stored in memory to allow serving old messages.