April 14, 2026

Streaming Upserts Done Right: Deduping and Idempotency at Scale  💻 Did you know? In many high-velocity streaming environments, the “same” event can be sent or processed multiple times due to network retries or distributed system failures.  The Art of the Upsert  At its core, a streaming upsert (a portmanteau of “update” and “insert”) is the process of synchronising incoming data with an existing