👋 Hi, I'm Pierre Zemb

I'm a Senior Engineer building data infrastructure at Clever Cloud. I've built and operated a variety of stateful distributed systems throughout my career.

I'm interested in distributed systems, data stores, and understanding how things work under the hood. I enjoy being part of open-source communities.

eza -snew -r ./posts | head -5

2026-08-13~6 min

Explaining FoundationDB's Architecture Through Compartmentalization Compartmentalization explains FoundationDB's architecture: find the responsibilities that got coupled together, split them, and scale only the parts that can scale.

2026-07-30~9 min

Why Apache Avro Needs Two Schemas Avro payloads cannot be decoded without the writer schema, and that two-schema model is what makes rolling upgrades and schema evolution work.

2026-06-09~6 min

Designing Fakes That Prove Correctness You fake the handful of methods your code actually calls, prove the fake stays honest, and then make it fail the way production does.

2026-05-05~5 min

BugBash 2026, or how the correctness decade has started A retrospective on BugBash 2026, and why software engineering looks brighter than ever.

2026-03-26~8 min

Why Fakes Beat Mocks and Testcontainers Trait-based fakes test partial failures that mocks and Testcontainers fundamentally cannot simulate. They are also the on-ramp to simulation-driven development.

eza ./posts | wc -l → 54 posts, read them all