Spring Boot

#flyway #database #migrations +2 more

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.

#openapi #swagger #spring-boot +2 more

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.

#redis #caching #spring-boot +2 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.

#spring-boot #configuration #profiles +2 more

Spring Boot Profiles & Configuration: The Art of Environment Management

Master Spring Boot profiles, externalized configuration, secrets management, and 12-factor app principles. Manage dev, staging, and production environments.

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

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

Automatically track who changed what and when with Spring Data JPA auditing. From basic timestamps to custom audit logs with complete revision history.

#spring-webflux #reactive #java +2 more

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.

#testcontainers #spring-boot #docker +2 more

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.

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

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.

Dec 4, 2025 Read more

#spring-ai #llm #json +3 more

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.

Dec 3, 2025 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, 2025 Read more

#langchain4j #java #ai +3 more

LangChain4j: Build AI Apps in Java Without Python

Complete guide to LangChain4j for Java developers. Build AI applications with RAG, memory, agents, tools, and function calling — no Python rewriting required.

Dec 2, 2025 Read more

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

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.

Nov 29, 2025 Read more

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

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.

Nov 28, 2025 Read more

#java #streams #functional-programming +2 more

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.

Nov 26, 2025 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, 2025 Read more

#spring-boot #redis #caching +3 more

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.

Nov 24, 2025 Read more

#spring-boot #testing #junit +2 more

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.

Nov 24, 2025 Read more

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

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.

Nov 24, 2025 Read more

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

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 #junit #mockito +3 more

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-security #csrf #cors +4 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 #jwt #authentication +2 more

Spring Security JWT Authentication: Stateless Auth Done Right

Implement JWT authentication in Spring Boot 3. Complete guide covering token generation, validation, refresh tokens, and production security best practices.

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

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.

Nov 20, 2025 Read more

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

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.

Nov 20, 2025 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, 2025 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, 2025 Read more