Heartbeats

Functional design

• Client subscribes to the sys.Heartbeat30 table in any Workspace

  • ~freq.Interval30Seconds~✅: Server sends heartbeat every 30 seconds

  • ~freq.ZeroKey~✅: Heartbeat is generated for AppQName{} and NullWSID

  • ~freq.SingleNotification~✅: If the client subscribes to sys.Heartbeat30 in multiple workspaces, the server sends only one heartbeat per 30 seconds to the client

  • It is not necessary to insert a record to the sys.Heartbeat30 singleton

Technical design

• ~cmp.wsingleton.Heartbeat30~✅

  • No ACL

• ~it.Heartbeat30~✅

Addressed issues

• https://github.com/voedger/voedger/issues/3638