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Hi there 👋
This week we focused on developer skills that matter — the Spring Boot topics every Java developer should know: security, testing, microservices, JPA, and production deployment. All in one place, all free.
We also expanded our React and Docker coverage, cleaned up our content library, and deepened several key articles that were previously too thin. Better content, clearer structure — that's the direction.
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FEATURED HUB
Spring Boot Must-Know Skills for Java Developers
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🌿 Security • Testing • Microservices • JPA • Deployment
The Spring Boot skills every Java developer needs
The Spring Boot hub covers the complete stack — auto-configuration internals, REST APIs, JPA and data access, Spring Security with JWT, testing (unit + integration + Testcontainers), reactive programming with WebFlux, microservices patterns, Docker deployment, and production-grade configuration management. All in one place, all free.
| ✅ Core concepts & auto-configuration |
✅ REST APIs & data validation |
| ✅ JPA, Hibernate & repositories |
✅ Spring Security & JWT auth |
| ✅ Unit, integration & Testcontainers |
✅ Reactive programming & WebFlux |
| ✅ Microservices & service discovery |
✅ Docker & containerised deployment |
| ✅ Actuator, metrics & observability |
✅ Externalized config & profiles |
Explore Spring Boot Hub →
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Section Spotlights
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Spring Security & JWT Authentication
End-to-end JWT implementation with Spring Security 6 — filter chain configuration, token generation and validation, refresh tokens, role-based access control, and method-level security with @PreAuthorize.
View Security Section →
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Testing: Unit, Integration & Testcontainers
@SpringBootTest vs @WebMvcTest vs @DataJpaTest slices, MockMvc for controller testing, Mockito patterns for service layer, and Testcontainers for real-database integration tests that run in CI.
View Testing Section →
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📦
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Microservices & Cloud-Native Patterns
CQRS, Saga pattern, service discovery with Eureka, API Gateway with Spring Cloud Gateway, circuit breaker with Resilience4j, distributed tracing with Micrometer + Zipkin, and event-driven messaging with Kafka.
View Microservices Section →
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ALSO THIS WEEK
New Hubs & Content Updates
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⚛️ React
React Hub — Complete
Hooks, Context, Redux Toolkit, React Query, Next.js, testing with React Testing Library, and performance optimisation. All articles in one hub.
Browse React Hub →
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🐳 Docker
Docker Hub — Complete
Dockerfile best practices, multi-stage builds, Compose, volumes, networking, security scanning, and deploying to production. Organised and cross-linked.
Browse Docker Hub →
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🧹 Quality
Content Audit Complete
Removed 16 duplicate Python articles, fixed 30 Cypress tutorial titles for clarity and SEO accuracy. Leaner, more precise content — exactly what search engines and readers prefer.
View Blog →
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🧠 Quiz
Test Your Knowledge
480+ questions across Java, Spring, DevOps, AWS, Kubernetes, and more. Timed rounds, instant feedback, and score tracking — free to use.
Take the Quiz →
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EXPANDED THIS WEEK
5 Stub Articles Turned Into Deep-Dives
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CQRS Pattern in Java
Command Query Responsibility Segregation from theory to implementation — with Axon Framework, event sourcing, separate read/write databases, and real-world trade-offs.
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2
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Java Microservices Architecture
Decomposition strategies, inter-service communication (REST vs Kafka), service discovery, API gateway patterns, distributed tracing, and the 12-factor app principles applied to Java.
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3
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Java Performance Testing
JMH microbenchmarking, JVM warm-up effects, heap profiling with async-profiler, GC tuning, memory leak detection, and load testing with Gatling — all with runnable examples.
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Spring Boot JWT Authentication
Full implementation with Spring Security 6 — JWT generation, filter chain, token validation, refresh token rotation, role-based endpoints, and handling expiry gracefully in production.
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Spring Boot Externalized Configuration
@ConfigurationProperties, profile-specific YAML, environment variable binding, Spring Cloud Config Server, Vault integration, and config validation at startup — a production-hardening guide.
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Coming Up Next
More Depth. More Coverage.
30 Spring articles expanding from 400 to 1,500+ words •
Kafka standalone hub
TypeScript series (20 new articles) •
System Design hub (15 articles)
Internal linking pass across all 950+ pages for better discoverability.
Explore All Content →
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🗺️
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11 Learning Path Hubs on Techoral
Java, Spring Boot, AWS, Kubernetes, React, Docker, DevOps, Security, AI/ML, Automation, and Database — all structured, all free.
View All Learning Paths →
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