History

Ilya Averyanov 8dce530d15 feat(queue): fix progress reporting and more tests We test reassignment during the intensive replay		2024-07-30 13:01:12 +03:00
..
docs/images	feat(queue): document protocol between agent and leader	2024-07-30 13:01:09 +03:00
src	feat(queue): fix progress reporting and more tests	2024-07-30 13:01:12 +03:00
test	feat(queue): fix progress reporting and more tests	2024-07-30 13:01:12 +03:00
BSL.txt	feat(sessds): make ds session be aware of shared subscriptions	2024-06-04 17:15:30 +03:00
mix.exs	chore: add missing mix files to new apps	2024-07-04 10:27:59 -03:00
README.md	feat(queue): document protocol between agent and leader	2024-07-30 13:01:09 +03:00
rebar.config	feat(sessds): make ds session be aware of shared subscriptions	2024-06-04 17:15:30 +03:00

README.md

EMQX Durable Shared Subscriptions

This application makes durable session capable to cooperatively replay messages from a topic.

General layout and interaction with session

The nesting reflects nesting/ownership of entity states.
The bold arrow represent the most complex interaction, between session-side group subscription state machine (GroupSM) and the shared subscription leader (Leader).

GroupSM and Leader communication

The target state of GroupSM and its representation in Leader is replaying. That is, when the GroupSM and the Leader agree on the leased streams, Leader sends lease confirmations to the GroupSM, the GroupSM sends iteration updates.

Other states are used to gracefully reassign streams to the GroupSM.

Below is the sequence diagram of the interaction.

Contributing

Please see our contributing.md.

License

EMQ Business Source License 1.1, refer to LICENSE.