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Losing Data is Harder Than I Expected

Posted by Jeremy ⋅ September 28, 2025 ⋅ 1 Comment

This is a follow‑up to the last article: Run Jepsen against CloudNativePG to see sync replication prevent data loss. In that post, we set up a Jepsen lab to make data loss visible when synchronous replication was disabled — and to show that enabling synchronous replication prevents it under crash‑induced failovers. Since then, I’ve been … Continue reading →

Run Jepsen against CloudNativePG to see sync replication prevent data loss

Posted by Jeremy ⋅ September 1, 2025 ⋅ 1 Comment

Are you in the Pacific Northwest? Want to learn more about topics related to this blog? At 3:15p on Thu Nov 13 in KubeCon Atlanta, I’ll be speaking with Leonardo Cecchi about distributed systems theory applied to standard open source postgres cluster reconfigurations. Jepsen is a testing framework for distributed systems that verifies safety guarantees … Continue reading →