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Spring Boot Crash Course Overview
Sep 24, 2024
Spring Boot Crash Course - Summary and Key Points
Introduction
Dan Vega, Spring Developer Advocate for VMware, presents a Spring Boot Crash Course.
Overview of Spring and Spring Boot.
Focus on building web applications with Spring Boot.
Prerequisites
Java Experience
: Beginner to intermediate level.
Build Tools
: Familiarity with Maven (we will use Maven).
Software Requirements
:
Java 17 installed.
IDE or text editor (e.g., IntelliJ IDEA, Visual Studio Code).
API testing tool (e.g., Postman, Curl).
H2 database for development, potentially switching to Postgres for production.
Understanding Spring and Spring Boot
Spring Framework
A massive project used for various applications, including:
Building web applications (imperative style with Spring MVC).
Reactive stack with Spring WebFlux.
Microservices with Spring Cloud.
Serverless functions with Spring Cloud Function.
Event-driven architecture with Spring Batch.
Command-line interface applications with Spring Shell.
Spring Boot
Simplifies Spring development with:
Starters
: Bundled dependencies (e.g., Spring Boot Starter Web).
Auto Configuration
: Automatically configures necessary components based on classpath.
Production Ready Features
: Spring Boot Actuator provides insights and metrics.
Building a Web Application
Application Overview
: Building a content calendar web application.
Learning Outcomes
: Setting up a Spring Boot application, using Maven, and exploring Spring Core Concepts.
Steps to Build the Application
Create a Spring Boot Project
: Use start.spring.io to bootstrap the application.
Setup Dependencies
: Define dependencies in
pom.xml
.
Set Up Application Structure
: Organize project folders for controllers, models, repositories.
Implement Core Principles
: Dependency Injection, MVC, REST APIs, and CRUD operations.
Use JDBC for Database Access
: Configure data sources and query data.
Production Readiness
: Preparation for deployment, including configuration management and using Spring Boot Actuator for monitoring.
Key Concepts Covered
Spring Core
IoC Container
: Manages application components and their lifecycle.
Beans
: Instances of classes managed by Spring.
Dependency Injection
: Injecting dependencies into classes for better management.
MVC Framework
Controllers
: Handle incoming requests and return responses.
Repositories
: Abstract data access and provide CRUD functionalities.
Database Interaction
JDBC & Spring Data JDBC
: Simplified database access, mapping Java objects to database records.
Using Command Line Runner
: Load initial data at application startup.
Configuration Management
Using application.properties
: Externalize configuration values.
Using Profiles
: Manage environment-specific settings.
Configuration Properties
: Type-safe configuration binding.
Production Deployment
Building Executable JARs
: Create a runnable jar file.
Docker
: Containerize the application for consistent deployment.
Spring Boot Actuator
: Monitor application health and metrics in production.
Railway Deployment
: Demonstrated deployment of the application to Railway.
Conclusion
Encouragement to apply learned concepts to new domains.
Resources for further learning provided.
Thank you for attending the crash course.
📄
Full transcript