Spring WebFlux Masterclass: High-Performance Reactive APIs

This Masterclass is the practical, complete guide to Spring WebFlux. You will master Non-Blocking I/O techniques, leveraging Reactive Programming principles, to build highly scalable and resilient microservices. The core focus is on maximizing performance and throughput by eliminating thread blocking. Learn advanced Spring Boot and Spring WebFlux skills including R2DBC for reactive data access, and HTTP/2 Streaming for optimal inter-service communication. This course delivers the expertise needed to transform your enterprise architecture for high-concurrency demands.

What You Will Master: Core Skills & Performance

• Every module is designed to provide you with an immediate, high-value, and actionable skill:
• Reactive vs. Traditional APIs: Understand the architectural shift from blocking to Non-Blocking I/O. Master the fundamental differences between Traditional APIs and Reactive APIs for maximum scalability.
• Reactive Data Access & Benchmarking (R2DBC): Implement non-blocking data access using R2DBC drivers and Spring Data R2DBC repositories. Benchmark and prove the throughput and resource efficiency of R2DBC against Spring Data JPA.
• Reactive Controller Development: Master creating reactive controllers, handling requests and responses using Flux/Mono, and validating logic using the dedicated WebTestClient tool.
• Advanced Error Handling: Discover techniques for managing exceptions within reactive pipelines. Implement strategies to return meaningful, consistent error responses for a robust user experience.
• WebFilter Chaining & Cross-Cutting Concerns: Explore how to implement and chain multiple WebFilters for complex logic. Master pre-processing and post-processing requests and effectively share data across the reactive flow.
• Functional Programming in WebFlux: Leverage the power of lambda expressions to write concise, readable code. Build controllers using the modern functional endpoints (Router Functions) pattern.
• Building Non-Blocking Clients (WebClient): Learn to use WebClient to consume external APIs asynchronously using reactive streams. Handle asynchronous responses efficiently in a truly non-blocking manner.
• Streaming & Real-Time Data: Implement client-side and server-side data streaming for large file transfers using WebClient. Master backpressure handling for optimized performance. Enable real-time updates using Server-Sent Events (SSE) with Spring WebFlux.
• Optimizing for Performance (Microservice Communication): Implement Gzip compression for maximum bandwidth savings. Configure HTTP connection pooling to reduce connection overhead. Leverage HTTP/2 protocol and multiplexing for efficient concurrent communication.
• Integration Testing Mastery: Master end-to-end testing with WebTestClient, embedding rigorous testing practices throughout the entire course.

By the end of this course, you will be the expert ready to build modern, high-throughput, and scalable Spring WebFlux microservices that maximize resource efficiency under load.

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