1 Spring WebFlux courses

Duration 4 Days 24 CPD hours This course is intended for This in an intermediate-level Java development course geared for students experienced with Java and Spring programming essentials. This course does not cover Java or Spring development basics. Overview Working within in an engaging, hands-on learning environment, guided by our expert team, attendees will: Understand the ReactiveX specification Understand the basics of Reactive Programming Discuss the advantages and limitations of Observables Write a client application capable of handling Reactive events Apply operators to event streams to filter, modify and combine the objects emitted by event publishers Select the appropriate type of Event Source Use both Cold and Hot Observables Deal with backpressure problems in reactive programming Develop a reactive web application using Spring WebFlux Define application flows of a WebFlux application Use the WebClient API to work with both synchronous and streaming APIs Develop Unit and Integration tests to test WebFlux endpoints Creating a reactive REST endpoint Become familiar with the basics of WebSockets Create a WebSocket endpoint using Spring Create a WebSocket client Understand the basics of NoSQL Become familiar with the basics of MongoDB Understand how the data in MongoDB can be retrieved using a Reactive API Define Spring Data MongoDB repositories Query the MongoDB using Spring Data Define a reactive repository using MongoDB Explore the Spring Data R2DBC API to perform reactive CRUD operations against a relational database Spring Data reative allow us to implement database operations relying on Reative Programming APIs. While the Spring R2DBC initiative aims to bring reactive programming to relational databaes, several NoSQL databases already provide this possibility. After an introduction to NoSQL and the MongoDB, this courses covers the APIs available to communicate with this NoSQL database using both blocking and reactive APIs.Introdcution to Reactive Spring is a comprehensive Java training workshop geared for experienced developers who wish to explore concurrent, asynchronous and reactive programming APIs and techniques using Spring. After an introduction to reactive programming, Reactive Streams and the Project Reactor APIs, this course will show how this APIs are integrated into Spring. Spring 5 includes Spring WebFlux, providing a reactive programming model for web applications, including support for Reactive REST APIs. Spring WebSocket assists in the creation of web applications which provide a full-duplex, two-way communication between client and server. INTRODUCTION TO REACTIVE PROGRAMMING * Reactive Manifesto * Introduce ReactiveX * ReactiveX implementations * The Observer, Iterator pattern and functional programming * Discuss hot and cold publishers REACTIVE STREAMS API * Introduce the Reactive Streams specification * Publisher and Subscribers * java.util.concurrent.Flow * Transformation of Messages (Processor) * Controlling messages * Tutorial: Setup Eclipse for Using Maven INTRODUCTION * Introduce the Reactor Building blocks * Flux and Mono * Creating observables * Subscribing to a stream TESTING EVENT SOURCES (INTRODUCTION) * Testing reactive implementations * StepVerifier : test sequence of emitted items * Defining expectations * TestPublisher: produce test data to test downstream operators REACTIVE OPERATORS * Introduce Operators * Show the use of marble diagrams * Explain some commonly used operators * Callback operators SCHEDULERS (MULTITHREADING) * Thread usage of subscriber and consumer * Using the subscribeOn method * Introduce the Scheduler interface * Using the observeOn method BACKPRESSURE * Strategies for dealing with Backpressure * ?reactive pull? backpressure EXCEPTION HANDLING * Handling errors in onError * Exception handling strategies * Using onErrorReturn or onErrorNext operators * Using the retry operators * The Global Error Handler SPRING DATA REVIEW * Quick review of Spring Data repositories * Query return types * Defining Query methods * Pagination and sorting R2DBC * Reactive Relational Database Connectivity * DatabaseClient * Performing CRUD operations * Reactive Query annotated methods SPRING WEBFLUX: INTRODUCTION * Annotated Controllers * Functional Endpoints * WebFlux configuration * Creating a reactive REST endpoint DEFINING FLOWS * Defining the application flow * Actions * Defining decision * Navigating flows * RouterFunction VIEW TECHNOLOGIES * View technologies * Using Thymeleaf to create the view * View Configuration SPRING WEBCLIENT: INTRODUCTION TO WEBCLIENT * Working with asynchronous and streaming APIs * Making requests * Handling the response * Lab: WebClient WEBTESTCLIENT * Testing WebFlux server endpoints * Testing controllers or functions * Define integration tests INTRODUCTION TO SPRING REACTIVE WEBSOCKETS * Be familiar with the basics of WebSockets * Understand the HTTP handshake and upgrade * Name some of the advantages of WebSockets DEFINING THE WEBSOCKET * WebSocket Message Handling * WebSocketSession * Implementing the WebSockethandler * Creating a Browser WebSocket Client WEBSOCKET STOMP * Streaming (or Simple) text-orientated messaging protocol * Introduce SockJS * Connecting to the STOMP endpoint * Configuring the message broker * STOMP destinations REACTIVE WEBSOCKET * Reactive WebSocket support * Implement the reactive WebSocketHandler BIGDATA * Introduce Big Data * Explain the need for enhanced data storage INTRODUCTION TO MONGODB * JavaScript Object Notation Overview * Introduce Binary JSON (BSON) * Starting the database * Creating Collections and Documents * Executing ?simple? database commands * Introduce the ObjectID * Searching for documents using query operators * Updating and deleting documents * MongoDB Compass SPRING AND MONGODB * MongoDB Support in Spring Data * MongoClient and MongoTemplate * Spring Data MongoDB configuration * @EnableMongoRepositories * Adding documents to the database * The @Document and @Field annotations * Polymorphism and the _class property * The Criteria object SPRING DATA MONGODB * MongoRepository * Field naming strategy * Using JSON queries to find documents * The @PersistenceConstructor annotation REACTIVE REPOSITORIES WITH MONGODB * Using reactive repositories * ReactiveMongoTemplate * RxJava or Reactor ADDITIONAL COURSE DETAILS: Nexus Humans Introduction to Reactive Spring (TT3355 ) training program is a workshop that presents an invigorating mix of sessions, lessons, and masterclasses meticulously crafted to propel your learning expedition forward. This immersive bootcamp-style experience boasts interactive lectures, hands-on labs, and collaborative hackathons, all strategically designed to fortify fundamental concepts. Guided by seasoned coaches, each session offers priceless insights and practical skills crucial for honing your expertise. Whether you're stepping into the realm of professional skills or a seasoned professional, this comprehensive course ensures you're equipped with the knowledge and prowess necessary for success. While we feel this is the best course for the Introduction to Reactive Spring (TT3355 ) course and one of our Top 10 we encourage you to read the course outline to make sure it is the right content for you. Additionally, private sessions, closed classes or dedicated events are available both live online and at our training centres in Dublin and London, as well as at your offices anywhere in the UK, Ireland or across EMEA.