-Implement event processing prioritization in [Apache Kafka](https://kafka.apache.org) is often a hard task because Kafka doesn't support broker-level reordering of messages like some messaging technologies do. This is not necessarily a limitation, since Kafka is a [distributed commit log](https://engineering.linkedin.com/distributed-systems/log-what-every-software-engineer-should-know-about-real-time-datas-unifying). With this data structure, events are immutable, and so their ordering is within partitions. But this doesn't change the fact the developers may need to implement event processing prioritization with Kafka, anyway.
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