Showing posts with label Spring WebFlux. Show all posts

Friday, 13 April 2018

Spring Architecture_V5 | Spring Tutorial | Spring basics | Spring Framework

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Understanding Spring Framework Architecture (Version 5)

Spring Framework 5.0 represents a modern revolution in enterprise Java development. Requiring Java 8+ at its baseline and providing full support for Java 9 module systems, Spring 5 introduces reactive programming paradigms alongside the classic servlet-based stack.

1. Core Container & Modern Java Foundations

The foundation of Spring 5 leverages modern Java capabilities to deliver fast, declarative Dependency Injection:

Core & Beans: Enhanced lifecycle methods and factory mechanisms optimized for Java 8 lambdas and functional bean definitions.
Context: Supplies unified runtime access, modular configurations, and full integration with the Java Platform Module System (JPMS).
SpEL (Spring Expression Language): High-performance expression language for accessing beans, evaluating expressions, and manipulating properties dynamically.

2. Reactive Architecture & Spring WebFlux

The standout architectural evolution in Spring 5 is the introduction of a complete non-blocking reactive stack:

Spring WebFlux: A parallel reactive web framework built from the ground up to support event-loop servers such as Netty and Undertow.
Project Reactor: Native implementation of Reactive Streams specification (Mono and Flux) for asynchronous backpressure management.
WebClient: A fully responsive, non-blocking HTTP client replacing traditional blocking templates.

3. AOP, Aspects & Instrumentation

Modular separation of concerns remains central in Spring 5:

Spring AOP: Facilitates declarative services such as transaction boundaries, method interception, and auditing.
AspectJ Integration: Full integration with compile-time, post-compile, and load-time AspectJ weaving.
Instrumentation: Dedicated support for custom classloaders and byte-code instrumentation across container environments.

4. Data Access, Transactions & Testing

Spring 5 refines enterprise data access and testing frameworks:

Data Access: Modernized abstractions for JDBC, ORM (JPA/Hibernate), and transactional management.
Testing Engine: Comprehensive support for JUnit 5 Jupiter, complete with reactive test subscribers and parallel test execution.