ThinkerQAQ

1.Fundamentals

Message Queues · 2 notes

  1. 1.1 Message Queues and Event Logshistorical

    Why asynchronous messaging exists, queue vs. pub-sub/log models, delivery semantics, backpressure, idempotency, ordering, and the trade-offs introduced by a broker.

  2. 1.2 Message Orderinghistorical

    How to preserve per-entity message order through partitioning, producer sequencing, consumer concurrency control, and idempotent version checks.