From: Kai Moritz <kai@juplo.de>
Date: Sun, 31 Jan 2021 21:24:16 +0000 (+0100)
Subject: Send messages are deleted individually after a crash
X-Git-Tag: eod-outbox-alt~1
X-Git-Url: https://juplo.de/gitweb/?a=commitdiff_plain;ds=inline;h=0e43103e1538e33878de0460d4caa3712a0ad592;hp=0e43103e1538e33878de0460d4caa3712a0ad592;p=demos%2Fkafka%2Foutbox

Send messages are deleted individually after a crash

* If all messages with a sequence-number lower than or equal than the
  sequence number of a message already send are deleted, this can only
  be done for the lowest sequence-number seen accross all partitions
  without violating the at-least-once semantics.
* Deleting seen messages individually by specifying their id (aka
  sequence-number) explicitly in the delete-command allows to delete
  _all_ messages from the outbox, that have been seen on the topic,
  hence, achieving exactly-once-semantics even in the case of an
  unclean shutdown (aka crash) of the OutboxProducer
---