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Juan Manuel Rey

Juan Manuel Rey

Systems Engineer

Recent

Eval Harnesses for Systems Engineers

·19 mins
Why eval harnesses feel alien to infrastructure engineers moving into AI, and how to map them onto the concepts you already use every day: SLOs, canary analysis and distributed traces.

YugabyteDB: Postgres for the Distributed Era

·23 mins
A hands-on tutorial on YugabyteDB: its history, why the DocDB/Raft architecture makes it a distributed, PostgreSQL-compatible database rather than just another NewSQL rewrite, real production deployments, and working Python and Go examples.

ClickHouse: What All the Fuss Is About

·20 mins
A hands-on tutorial on ClickHouse: its history, why its columnar MergeTree architecture is so fast, real production deployments at Cloudflare and Uber, and working Python and Go examples.