Jeremy Schneider
Postgres Engineer @ GEICO
Jeremy Schneider has been programming for 30 years and working with databases for 20 years, first focused on Oracle and later focused on Postgres. He is currently an organizer of the Seattle Postgres User Group. He is also a Postgres Engineer at GEICO tech. Bringing his background with large-scale data processing and enterprise relational databases to the table, he is helping build a next-generation hybrid-cloud database platform.
POSETTE 2026 Talk
Quorum-Based Consistency for Cluster Changes with CloudNativePG Operator
Most people don’t think of Postgres in the context of quorum or distributed systems theory but vanilla open source Postgres has supported quorum commits across multiple replicas for almost 10 years now. Technologies like cassandra and dynamo popularized quorum consistency in the hot path of distributed writes and reads, but the theory also applies to cluster reconfigurations in a single-writer database like Postgres. Stateful operators at level V of the capabilities framework require very careful end-to-end coordination between control plane and data plane algorithms to avoid data loss when providing auto-healing under circumstances like network partitions or compounded failures. This session will explore how quorum consistency can be applied in the CloudNativePG operator, offering insights to users of Postgres on Kubernetes about trusting Postgres to keep our data safe.
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