Data Systems Architecture Overview Core principle: Good data system architecture balances reliability (correct operation under faults), scalability (handling growth gracefully), and maintainability (enabling productive change over time). Every architectural decision involves trade-offs between these concerns. This skill synthesizes knowledge from three foundational texts: - Designing Data-Intensive Applications (Kleppmann) - distributed systems, storage engines, scaling - The Art of PostgreSQL (Fontaine) - PostgreSQL-specific patterns, SQL as programming - PostgreSQL Query Optimization (Dombr…