Benoit Tellier created JAMES-3559:
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Summary: JMAP PUSH: window events on the server side?
Key: JAMES-3559
URL: https://issues.apache.org/jira/browse/JAMES-3559
Project: James Server
Issue Type: Improvement
Components: JMAP
Affects Versions: 3.6.0
Reporter: Benoit Tellier
Assignee: Antoine Duprat
h3. Why?
Today a JAMES action might trigger several events being dispatched on the event
bus (eg moving 2 messages will end up firing 2 additions and 2 deletion)
resulting in likely 4 StateChanges being pushed to the end user.
h3. How?
Using the reactor library, James can likely delay pushes for a given timewindow
and merge the state changes together in order to supply the client with only
one state change.
A likely time value might be 2 seconds.
- Pros: avoid event storm and will lower re-synchronization request count
(good for perf?)
- Cons: delays of 2s for real time across devices.
We could of course make it configurable via a jmap.properties configuration.
{code:java}
# Optional. Omiting this property leads to windowing being disables. James will
# then directly forward all StateChanges to the end user without attempting to
# buffer and aggregating them.
# If specified, James will delay stateChanges for that given amout of time and
will attempt
# to aggregate subsequent state changes together before returning them to the
client.
# Units: ms, s, min, h, d
push.aggregation.window.duration=2s
{code}
Thoughts [~inputmice] maybe?
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