Xiaolin Talks Programming

Jun 26, 2026 · Backend Development

Multi-Tenant SaaS in Production: Spring Boot Dynamic Data Source & Row-Level Isolation

This article shares production-hardened patterns for multi-tenant SaaS using Spring Boot, covering isolation mode selection, ThreadLocal-based context propagation, MyBatis-Plus SQL interception for automatic tenant_id injection, Feign and async thread propagation, HikariCP tuning, composite indexing, cursor pagination, and real-world pitfalls like interceptor ordering, transaction-bound data source switching, and ThreadLocal leakage.