#kafka
22 Sept 2026 · 8 min
Exactly-once is a memory problem
You will receive the same message twice. The fix isn't a stronger delivery guarantee — it's remembering what you already did, and one database primitive is enough to do it.
08 Sept 2026 · 6 min
Splitting events by type breaks the only ordering you had Three ways to lay out domain events across Kafka topics. One of them looks like the tidy option and quietly costs you the ability to rebuild state at all.
10 May 2023 · 4 min
Harnessing the power of Avro and the Schema Registry Why Avro is worth the extra moving parts on Kafka, what the five bytes in front of every message are for, and how the serializer and the schema registry keep incompatible data off your topics.
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