RabbitMQ Messaging With Java (Spring Boot) From Zero To Hero

Install Java 11+ as the baseline, explain why Java 11 is chosen for long-term support, cover alternatives, download from Oracle, sign in, and install with default settings.

Install IntelliJ, selecting the free community version with default settings to start your RabbitMQ messaging with Java (Spring Boot) project, and leverage its fast learning curve and code completion.

Install and configure Lombok in IntelliJ to use the library for server-side code and avoid getter and setter methods, then enable it in the IDE settings.

Download and install RabbitMQ and the RabbitMQ management console. Enable the management plugin, start the RabbitMQ service, and access the console at localhost:15672 with the default credentials.

Explore dependency injection, beans, and configuration in Spring Boot. Learn constructor, setter, and field injection, and use component, repository, service, and controller annotations with transactional support.

Explore Lombok basics for Java encapsulation, using @Getter, @Setter, @Data, and @Value to auto-generate getters, setters, equals, hashCode, and constructors for immutable classes.

Explore building rest services with a rest controller, using get, post, put, patch, and delete mappings, passing data via request bodies or query parameters and returning response entities.

Install postman, an API development tool, and learn to build, test, and convert API calls to code in multiple languages using HTTP methods, headers, and JSON bodies with JSON placeholder.

Explore how the @RequestParam annotation in Spring extracts query, form, and header parameters, with customizable names, required flags, and default values.

Explore how the @PathVariable annotation maps URI template variables to method parameters in Spring, showing required vs optional flags, default names, and customizing variable names.

Explain how the @RequestBody annotation maps the HTTP request body to a domain object using HTTP message converters, selecting the converter based on content type and available libraries like Jackson.

Explore the springboard project's infrastructure, building a Java Spring Boot mvc app with model entities, repositories, services, and controllers, exposed as rest api using Lombok and Gradle.

Create a spring boot project using Spring Initializr with Gradle, Java 11, and messaging and Lombok dependencies, then import into IntelliJ and enable annotation processing to start coding.

Choose Gradle for project dependencies to gain faster incremental builds and efficient task execution. Contrast Gradle with Maven, highlighting performance differences and incremental builds that rebuild only changed files.

Configure RabbitMQ with application properties and create a Keishin Connection Factory and Jackson Message Convertor to manage channels efficiently.

Discover how the default exchange in RabbitMQ automatically binds each queue with an empty routing key, enabling a simple direct messaging setup in Spring Boot.

Publish a message object to RabbitMQ via a Spring Boot REST controller using the default exchange; test with Postman and the management console.

Learn to implement a direct exchange in RabbitMQ with Spring Boot, configuring queues, exchanges, and routing keys, binding them, and testing through the management console.

Test a RabbitMQ direct exchange using a Spring Boot REST API by sending messages with routing keys to Q1 or Q2 and observing delivery in the corresponding queues.

Declare and configure a RabbitMQ fanout exchange with durable queues, bindings, and management in Spring Boot, then test via management console and REST API.

Test a fan out exchange in RabbitMQ with a Spring Boot REST API by posting messages via Postman to the exchange and verifying delivery in the management console.

Learn topic exchange in RabbitMQ, matching routing keys with binding patterns using star and count expressions. Implement queues, a topic exchange, and bindings in Spring Boot.

Learn to build a rest api to test a topic exchange in RabbitMQ using Spring Boot, routing keys, and topic queues, with hands-on Postman testing.

Learn how header exchanges route messages using header properties and binding conditions with x-match any, then configure queues, exchanges, and bindings in a Spring Boot RabbitMQ app.

Create a rest api to test RabbitMQ header exchange with x match. Build a header controller and endpoints to route messages to header queues based on M1, M2, and headers.