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This guide covers practical adoption of JDK 21 virtual threads in Spring Boot 3.2+, detailing configuration pitfalls, connection pool tuning, thread pool separation, pinning diagnosis via JFR, monitoring metrics shifts, and a phased rollout strategy for high-concurrency services.
This article presents a comprehensive production-grade approach to API version management in Spring Boot, covering version identification strategies, custom routing via RequestCondition, DTO isolation with MapStruct, deprecation interceptors with Prometheus metrics, gateway-level traffic splitting using Spring Cloud Gateway and Nginx, and a lifecycle state machine with automated retirement rules.
This article details production-hardened patterns for building reliable message-driven systems with Spring Boot, covering MQ selection, producer confirmations, local message tables, manual acknowledgment, retry with backoff, dead-letter queues, idempotency strategies, backlog monitoring, ordered messaging, distributed tracing, and JVM/OS tuning parameters.
This article shares practical experience migrating Spring Boot integration tests to Testcontainers, covering database migration with Flyway, test data factories, multi-container networking, performance optimization via container reuse and parallel execution, CI pipeline integration, and team conventions for test layering and mutation testing.
This article details a production-verified zero-downtime database migration strategy using Spring Boot and Flyway, covering why DDL causes outages, Flyway configuration best practices, the expand-migrate-contract pattern for smooth schema changes, script writing and rollback techniques, Kubernetes deployment coordination, monitoring with circuit breakers, and a post-mortem checklist.
This article details a production-grade system for implementing dynamic feature toggles and canary releases in Spring Boot, covering architecture design, config-center integration with Nacos/Apollo, code patterns using AOP and strategy routing, traffic-splitting algorithms with user stickiness, A/B test metrics collection, and toggle lifecycle governance with hard TTL cleanup.
This article details production-hardened patterns for scaling Spring Boot WebSocket clusters, covering protocol trade-offs, STOMP heartbeat alignment, Redis-based routing, offline message compensation, reconnection backoff, idempotency layers, Undertow tuning, memory leak diagnostics, Nginx proxy pitfalls, split-brain defense, and graceful shutdown — all grounded in real incidents.
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.
This article details how to replace MySQL complex queries with Elasticsearch in production, covering data sync via Canal/Kafka, mapping design with IK analyzer, Spring Data ES query builders, deep pagination with Search After, and consistency guarantees through reconciliation and dead-letter queues.
This article details a production-grade Spring Boot audit architecture covering full-chain traceability, async log persistence, dynamic data masking via Jackson serializers, tamper-proofing with hash chains, and hot/cold log tiering, with concrete code examples and performance tuning insights from financial and government deployments.
