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Xiaolin Talks Programming

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Latest from Xiaolin Talks Programming

96 recent articles

Xiaolin Talks Programming

Jul 18, 2026 · Backend Development

Microservice Contract Testing: From CDC to CI/CD Automation with SCC & Pact

This article details a practical microservice contract testing system using Spring Cloud Contract and Pact, covering consumer-driven contracts, DSL definitions, provider verification, CI/CD pipeline integration with GitLab, stub versioning, breaking change management, and team collaboration practices to replace fragile manual integration with automated, version-controlled interface guarantees.

CI/CDConsumer-Driven ContractsGitLab CI

0 likes · 20 min read

Microservice Contract Testing: From CDC to CI/CD Automation with SCC & Pact

Xiaolin Talks Programming

Jul 17, 2026 · Backend Development

Spring StateMachine in Production: Modeling, Redis Persistence & High-Concurrency Anti-Duplication Patterns

This article shares real-world experience using Spring StateMachine to replace sprawling if-else logic in order systems, covering state/event/guard modeling, Redis-backed persistence, a three-layer concurrency control pattern (distributed lock + optimistic lock + event idempotency), async decoupling, timeout handling, and compensation strategies with concrete code templates.

IdempotencyRedis PersistenceSpring StateMachine

0 likes · 17 min read

Spring StateMachine in Production: Modeling, Redis Persistence & High-Concurrency Anti-Duplication Patterns

Xiaolin Talks Programming

Jul 16, 2026 · Backend Development

CDC + Outbox Pattern: Production-Grade Cross-Database Sync with Spring Boot & Kafka

This article details a production-ready cross-database synchronization architecture using CDC and Outbox pattern with Spring Boot, Debezium, and Kafka, covering schema design, connector configuration, transaction boundaries, ordering guarantees, idempotent consumption, dead-letter queues, and monitoring strategies.

CDCCross-Database SyncDebezium

0 likes · 20 min read

CDC + Outbox Pattern: Production-Grade Cross-Database Sync with Spring Boot & Kafka

Xiaolin Talks Programming

Jul 15, 2026 · Backend Development

HikariCP Deep Tuning: Leak Detection, Parameter Optimization & Slow SQL Defense in Spring Boot

A production incident where core API latency spiked from 50ms to 30s+ due to connection leaks and exhausted MySQL max_connections is dissected, revealing how default HikariCP settings become time bombs under load and how to build a defense system with leak detection, parameter tuning, slow SQL interception, and kill mechanisms.

Connection PoolHikariCPMySQL

0 likes · 18 min read

HikariCP Deep Tuning: Leak Detection, Parameter Optimization & Slow SQL Defense in Spring Boot

Xiaolin Talks Programming

Jul 14, 2026 · Backend Development

ORM Performance Tuning in Spring Boot: Fixing N+1 Queries, Dynamic SQL Optimization & Fetch Strategies

This guide covers root-cause analysis of N+1 queries in JPA and MyBatis, APM-based detection methods, fetch strategy optimization using EntityGraph and JOIN FETCH, MyBatis resultMap refactoring, lazy-loading boundaries, second-level cache trade-offs, keyset pagination, and production-grade SQL interceptors with code review checklists.

Fetch StrategyJPAMyBatis

0 likes · 21 min read

ORM Performance Tuning in Spring Boot: Fixing N+1 Queries, Dynamic SQL Optimization & Fetch Strategies

Xiaolin Talks Programming

Jul 13, 2026 · Backend Development

CQRS & Event Sourcing in Spring Boot: Read/Write Separation, Snapshots & Compensation

This guide details implementing CQRS and Event Sourcing in Spring Boot, covering command/query separation, event bus choices (Outbox pattern, Kafka), projection idempotency, state snapshots for performance, Saga-based compensation for distributed transactions, and practical tuning tips for production workloads.

CQRSEvent BusIdempotency

0 likes · 14 min read

CQRS & Event Sourcing in Spring Boot: Read/Write Separation, Snapshots & Compensation

Xiaolin Talks Programming

Jul 10, 2026 · Backend Development

How We Replaced Hardcoded Routing with LiteFlow for Dynamic Orchestration & Hot Reloads

This article details replacing hardcoded business routing with LiteFlow in a Spring Boot production system, covering component design, EL-based flow orchestration, Nacos-powered hot rule updates, thread-pool tuning, exception isolation, observability, and rule versioning — with concrete code, config, and lessons learned.

Dynamic OrchestrationHot ReloadLiteFlow

0 likes · 19 min read

How We Replaced Hardcoded Routing with LiteFlow for Dynamic Orchestration & Hot Reloads

Xiaolin Talks Programming

Jul 7, 2026 · Backend Development

Spring Batch for Massive Data Migration: Partitioning, Fault Tolerance & Checkpoint Restart

This article details production-ready Spring Batch architecture for massive data migration, covering core Job/Step/Chunk model, partitioning for parallelism, streaming file reads, JDBC batch tuning, retry/skip fault tolerance, checkpoint restart via BATCH_* tables, memory/cursor trade-offs, dynamic chunk sizing, monitoring metrics, and scheduler-executor decoupling with XXL-JOB or Airflow.

Checkpoint RestartJDBC OptimizationSpring Batch

0 likes · 19 min read

Spring Batch for Massive Data Migration: Partitioning, Fault Tolerance & Checkpoint Restart

Xiaolin Talks Programming

Jul 6, 2026 · Backend Development

Enterprise Spring Boot Starter Pitfall Guide: Auto-Configuration, Config Binding & Production Standards

A comprehensive guide to building production-ready Spring Boot Starters covering auto-configuration registration via AutoConfiguration.imports, conditional annotations (@ConditionalOnClass, @ConditionalOnMissingBean, @ConditionalOnProperty), type-safe configuration binding with @ConfigurationProperties and validation, IDE metadata generation, lightweight health indicators, version alignment with Spring Boot, testing with ApplicationContextRunner, and dependency hygiene using optional/exclusions.

@ConfigurationPropertiesApplicationContextRunnerAutoConfiguration

0 likes · 16 min read

Enterprise Spring Boot Starter Pitfall Guide: Auto-Configuration, Config Binding & Production Standards

Xiaolin Talks Programming

Jul 5, 2026 · Backend Development

Spring Boot HTTP Client Tuning: From RestTemplate to HttpClient 5 for Production Connection Pools

This guide details production-grade HTTP client tuning in Spring Boot, covering RestTemplate pitfalls, HttpClient 5 configuration, connection pool sizing via Little's Law, timeout layering, HTTP/2 trade-offs, business isolation patterns, interceptor chains, graceful shutdown, and metrics-driven troubleshooting for connection leaks.

Connection PoolHTTP/2HttpClient 5

0 likes · 18 min read

Spring Boot HTTP Client Tuning: From RestTemplate to HttpClient 5 for Production Connection Pools