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A partition key defines both the ordering boundary and the load distribution. Use the smallest business entity that truly requires ordered events, then test its skew.
Writing archive
Everything published under Writing, newest first. Each entry is labelled as part of an investigation, an article or reference. Short engineering notes have their own archive.
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Article · Derived state
What Invalidates Rust's Incremental Compilation Cache?
Rust's incremental cache is a dependency graph, not a saved compiler process. Learn what an edit dirties, how green nodes are recovered, and why Cargo may still run rustc.- Published on
Article · Interrupted execution
How Long Must a Consumer Remember Duplicate Messages?
A deduplication TTL must cover every supported path by which an old message can return. Derive the window from retries, replays, outages, and redrives.- Published on
Article · Interrupted execution
Make Retried Agent Actions Idempotent Before Adding Autonomy
Agent retries must reuse one logical action identity and reconcile uncertain effects. An effect ledger makes autonomy bounded, inspectable, and recoverable.- Published on
Article · Interrupted execution
The Inbox Pattern: Deduplicate Before Business Logic Runs
A database inbox turns at-least-once delivery into one committed business effect by claiming message identity in the same transaction as domain changes.