Spring Boot

Flyway Database Migrations: Never Run ALTER TABLE in Production by Hand Again

Version control your database schema. Learn Flyway migration strategies, rollback approaches, and how to handle team collaboration without conflicts.

#flyway #database #migrations +2 more

Dec 7, 2025 Read more

Spring Boot 7 min read

OpenAPI & Swagger: Your API Documentation That Actually Stays Updated

Generate beautiful, interactive API docs that can't go stale. Learn contract-first vs code-first, customization, and generating client SDKs.

#openapi #swagger #spring-boot +2 more

Dec 7, 2025 Read more

Spring Boot 9 min read

Redis Caching Patterns: The Difference Between 200ms and 2ms Response Times

Beyond @Cacheable - learn cache-aside, write-through, read-through patterns, cache invalidation strategies, and how to avoid the thundering herd problem.

#redis #caching #spring-boot +2 more

Dec 7, 2025 Read more

Spring Boot 7 min read

Spring Boot Profiles & Configuration: The Art of Environment Management

Master Spring profiles, externalized configuration, secrets management, and the 12-factor app approach to configuration.

#spring-boot #configuration #profiles +2 more

Dec 7, 2025 Read more

Spring Boot 7 min read

Spring Data JPA Auditing: Stop Writing createdAt/updatedAt Boilerplate Forever

Automatically track who changed what and when. Learn JPA auditing from basics to custom audit logs with revision history.

#spring-data-jpa #auditing #hibernate +2 more

Dec 7, 2025 Read more

Spring Boot 6 min read

Spring WebFlux: When Threads Are Too Expensive (And When They're Not)

Reactive programming isn't always the answer. Learn when WebFlux actually helps, how it works under the hood, and how to avoid the common pitfalls.

#spring-webflux #reactive #java +2 more

Dec 7, 2025 Read more

Spring Boot 8 min read

Testcontainers: Why Your Integration Tests Have Been Lying to You

Stop using H2 for tests. Learn how Testcontainers eliminates the 'works on my machine' problem by running real databases in Docker during tests.

#testcontainers #spring-boot #docker +2 more

Dec 7, 2025 Read more

Spring Boot 23 min read

Spring Boot 3 Virtual Threads: Complete Guide to Java 21 Concurrency

Master virtual threads in Spring Boot 3. Learn configuration, performance benchmarks, when to use them, common pitfalls, and production-ready patterns for high-throughput applications.

#spring-boot #java #virtual-threads +4 more

Dec 13, 2024 Read more

Spring Boot 7 min read

Spring AI + MCP: Build AI Agents That Actually Do Things

Connect your Spring Boot app to external tools, databases, and APIs using Model Context Protocol. Complete guide with working code.

#spring-ai #mcp #ai-agents +3 more

Dec 4, 2024 Read more

Spring Boot 6 min read

Spring AI Structured Output: Parse LLM Responses into Java Objects

Convert unpredictable LLM text into type-safe Java objects. BeanOutputConverter, ListOutputConverter, and custom converters explained.

#spring-ai #llm #json +3 more

Dec 3, 2024 Read more

Spring Boot 16 min read

Spring Security Part 6: Production Security Best Practices & Hardening

Deploy secure Spring Boot applications with production-grade security configurations, monitoring, rate limiting, and comprehensive security hardening techniques.

#Spring Security #Production Security #Security Hardening +4 more

Dec 3, 2024 Read more

Spring Boot 6 min read

LangChain4j: Build AI Apps in Java Without Python

Complete guide to LangChain4j - RAG, memory, agents, and tools for Java developers. Stop rewriting Python code.

#langchain4j #java #ai +3 more

Dec 2, 2024 Read more

Spring Boot 7 min read

REST API Design Best Practices: Complete Guide

Master REST API design with industry best practices. Learn naming conventions, versioning, error handling, pagination, and security patterns.

#rest-api #api-design #spring-boot +3 more

Nov 29, 2024 Read more

Spring Boot 6 min read

Java 21 Virtual Threads: The Complete Guide to Million-Thread Concurrency

Master Java 21 virtual threads to scale from 5,000 to 5,000,000 concurrent operations. Practical examples, benchmarks, and migration guide.

#java-21 #virtual-threads #concurrency +2 more

Nov 28, 2024 Read more

Spring Boot 6 min read

Java Streams API: From Basics to Advanced Patterns

Master Java Streams for clean, efficient data processing. Map, filter, reduce, collectors, parallel streams, and real-world patterns.

#java #streams #functional-programming +2 more

Nov 26, 2024 Read more

Spring Boot 10 min read

Spring Security OAuth2: Complete Social Login Guide (Google, GitHub)

Implement OAuth2 social login in Spring Boot. Learn Google, GitHub authentication, custom OAuth2 providers, and combining with JWT.

#spring-security #oauth2 #spring-boot +4 more

Nov 26, 2024 Read more

Spring Boot 8 min read

Redis Caching with Spring Boot: Complete Implementation Guide

Master Redis caching in Spring Boot applications. Learn cache configuration, annotations, TTL management, and performance optimization techniques.

#spring-boot #redis #caching +3 more

Nov 24, 2024 Read more

Spring Boot 6 min read

Spring Boot Testing: Unit to Integration Tests That Actually Work

Test Spring Boot apps properly. Unit tests, @WebMvcTest, @DataJpaTest, Testcontainers, and test slices explained with real examples.

#spring-boot #testing #junit +2 more

Nov 24, 2024 Read more

Spring Boot 8 min read

Spring Security Method-Level Authorization: Complete @PreAuthorize Guide

Master method-level security in Spring Boot. Learn @PreAuthorize, @PostAuthorize, SpEL expressions, custom permissions, and domain object security.

#spring-security #spring-boot #java +3 more

Nov 24, 2024 Read more

Spring Boot 7 min read

Spring Boot JWT Authentication: Complete Security Guide

Implement JWT authentication in Spring Boot 3. Learn Spring Security 6, token generation, validation, refresh tokens, and role-based access control.

#spring-boot #jwt #spring-security +3 more

Nov 22, 2024 Read more

Spring Boot 6 min read

Spring Boot Testing with JUnit 5 and Mockito: Complete Guide

Master Spring Boot testing with JUnit 5 and Mockito. Learn unit testing, integration testing, mocking dependencies, and test-driven development.

#spring-boot #junit #mockito +3 more

Nov 22, 2024 Read more

Spring Boot 10 min read

Spring Security CSRF, CORS & Headers: Complete Protection Guide

Master CSRF protection, CORS configuration, and security headers in Spring Boot. Learn when to disable CSRF, configure CORS properly, and add security headers.

#spring-security #csrf #cors +4 more

Nov 22, 2024 Read more

Spring Boot 6 min read

Spring Security JWT Authentication: Stateless Auth Done Right

Implement JWT authentication in Spring Boot 3. Token generation, validation, refresh tokens, and security best practices.

#spring-security #jwt #authentication +2 more

Nov 22, 2024 Read more

Spring Boot 8 min read

REST API Best Practices in Java: Design APIs Developers Love

Build REST APIs that are consistent, discoverable, and maintainable. Naming, versioning, error handling, pagination, and HATEOAS explained.

#rest-api #spring-boot #java +2 more

Nov 20, 2024 Read more

Spring Boot 6 min read

Spring Boot Microservices: Complete Architecture Guide

Build production-ready microservices with Spring Boot and Spring Cloud. Learn service discovery, API gateway, config server, and inter-service communication.

#spring-boot #microservices #spring-cloud +3 more

Nov 20, 2024 Read more

Spring Boot 12 min read

Spring Security Database Authentication: Custom UserDetailsService Guide

Implement database authentication in Spring Security. Learn UserDetailsService, password encoding, account locking, and multi-tenant authentication.

#spring-security #spring-boot #java +3 more

Nov 20, 2024 Read more

Spring Boot 9 min read

Spring Security Architecture: Complete Guide to How Security Works

Master Spring Security internals. Learn FilterChain, SecurityContext, Authentication flow, and how Spring Security protects your application.

#spring-security #spring-boot #java +3 more

Nov 18, 2024 Read more

Spring Boot 6 min read

Spring Data JPA: Advanced Queries and Best Practices

Master Spring Data JPA with advanced queries, custom repositories, specifications, projections, and performance optimization techniques.

#spring-boot #spring-data-jpa #java +3 more

Nov 17, 2024 Read more

Spring Boot 4 min read

Introduction to Spring Data Redis

Learn how to integrate Redis with Spring Boot using Spring Data Redis. Complete guide with Docker setup and practical examples.

#spring-boot #java #redis +2 more

Jan 10, 2020 Read more