SpringBoot Microservices for New Developers
A comprehensive guide to building, deploying, and managing microservices using Spring Boot, designed for developers with no prior experience.
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Introduction to Microservices Architecture
Unit 1: Understanding Microservices
What are Microservices?
Monoliths Explained
Micro vs. Monolith
Benefits of Microservices
Scalability
Unit 2: Challenges and Considerations
Distributed Systems
Operational Overhead
Data Management
Communication Patterns
Service Discovery
Unit 3: Microservices Deep Dive
Decomposition Strategies
Bounded Contexts
API Design Principles
Fault Tolerance
Security Considerations
Setting Up Your Spring Boot Development Environment
Unit 1: Java and IDE Setup
Installing the JDK
Choosing Your IDE
IntelliJ First Look
Eclipse First Look
Unit 2: Dependency Management
Maven vs. Gradle
Installing Maven
Installing Gradle
Unit 3: Spring Initializr
Spring Initializr Intro
Creating a Project
Unit 4: Project Structure
Project Structure
pom.xml Deep Dive
build.gradle Deep Dive
application.properties
Running Your App
Building Your First Microservice: RESTful API Basics
Unit 1: REST API Design and Setup
Intro to REST APIs
Designing Your API
Spring Initializr Setup
Project Structure
First Controller
Unit 2: Implementing REST Endpoints
GET Mapping
POST Mapping
PUT and DELETE
Path Variables
Status Codes
Unit 3: Data Handling and JSON
Request Headers
Response Headers
JSON Time!
JSON in Requests
Custom JSON
Data Persistence with Spring Data JPA
Unit 1: Introduction to Spring Data JPA
What is Spring Data JPA?
Setting Up Your Project
Connecting to a Database
Unit 2: Defining Entities
Creating Your First Entity
Primary Keys
Column Mapping
Entity Relationships
Unit 3: Creating and Using JPA Repositories
Repository Interfaces
Basic CRUD Operations
Custom Queries
Paging and Sorting
Unit 4: Advanced JPA Concepts
Transactions
Auditing
Database Configuration
Unit 5: Putting It All Together
Building a Service Layer
Inter-Service Communication with REST APIs
Unit 1: Introduction to Inter-Service Communication
Intro to Inter-Service
Sync vs Async: REST
REST API Overview
Unit 2: REST APIs with Spring's RestTemplate
RestTemplate: Setup
GET Requests with RestT
POST Requests with RestT
PUT/DELETE with RestT
Unit 3: REST APIs with Spring's WebClient
WebClient: Setup
GET Requests with WebC
POST Requests with WebC
PUT/DELETE with WebC
Unit 4: Handling Data and Errors
JSON Serialization
Error Handling
Data Transfer Objects
Asynchronous Communication with Message Queues (RabbitMQ)
Unit 1: Understanding Message Queues
What are Message Queues?
Why Use Message Queues?
RabbitMQ: An Overview
Unit 2: Setting Up RabbitMQ
Installing RabbitMQ
RabbitMQ Management UI
Configuring RabbitMQ
Unit 3: Spring AMQP Basics
Spring AMQP Introduction
Connecting to RabbitMQ
Declaring Exchanges/Queues
Unit 4: Publishing and Consuming Messages
Publishing Messages
Consuming Messages
Message Conversion
Unit 5: Advanced Concepts
Error Handling
Transactions
Message Persistence
Service Discovery with Spring Cloud Netflix Eureka
Unit 1: Understanding Service Discovery
What is Service Discovery?
Why Use Eureka?
Eureka: Netflix's Solution
Unit 2: Setting Up Eureka Server
Create Eureka Server Project
Enable Eureka Server
Configure Eureka Server
Run Eureka Server
Unit 3: Registering Microservices with Eureka
Add Eureka Client Dependency
Enable Eureka Client
Configure Microservice
Run Microservice
Unit 4: Discovering and Locating Microservices
Using the Discovery Client
Using Load Balanced RestTemplate
Invoke Other Services
Unit 5: Advanced Eureka Concepts
Health Checks
Metadata
Configuration Management with Spring Cloud Config Server
Unit 1: Understanding Centralized Configuration
Config Management Intro
Why Centralize Configs?
Config Server Concepts
Unit 2: Setting Up Spring Cloud Config Server
Project Setup
Enable Config Server
Git Repo Setup
Connect to Git
Unit 3: Managing Configuration Properties
Config File Basics
Profiles and Configs
Version Control
Unit 4: Retrieving Configurations in Microservices
Client Setup
Fetch Configs
Refresh Scope
Troubleshooting
API Gateway with Spring Cloud Gateway
Unit 1: Understanding API Gateways
API Gateway: What & Why
Gateway Patterns
Spring Cloud Gateway Intro
Unit 2: Setting Up Spring Cloud Gateway
Project Setup
Basic Configuration
Predicates Deep Dive
Filters: Modify Requests
Unit 3: Advanced Routing and Filtering
Filters: Modify Responses
Route Ordering
Custom Filters
Circuit Breaker
Unit 4: Security and Transformation
Authentication Basics
Request Transformation
Response Transformation
Rate Limiting
Centralized Logging with ELK Stack (Elasticsearch, Logstash, Kibana)
Unit 1: Introduction to Centralized Logging and ELK Stack
Why Centralized Logging?
Meet the ELK Stack
ELK Stack Use Cases
Unit 2: Setting Up Elasticsearch
Elasticsearch: Overview
Install Elasticsearch
Elasticsearch Configuration
Unit 3: Setting Up Logstash
Logstash: Overview
Install Logstash
Logstash Configuration
Unit 4: Setting Up Kibana
Kibana: Overview
Install Kibana
Kibana Configuration
Unit 5: Microservice Logging and ELK Integration
Logging from Spring Boot
Logstash Pipeline
Kibana Visualizations
Monitoring with Prometheus and Grafana
Unit 1: Introduction to Monitoring Microservices
Why Monitor?
Key Metrics to Track
Tools of the Trade
Unit 2: Setting Up Prometheus
Prometheus: The Download
Configuring Prometheus
PromQL Basics
Unit 3: Exposing Metrics with Spring Boot Actuator
Actuator: The Basics
Metrics Endpoint
Prometheus Integration
Unit 4: Visualizing Metrics with Grafana
Grafana: The Download
Adding Prometheus Source
Building Dashboards
Essential Dashboards
Unit 5: Advanced Monitoring Concepts
Alerting
Security with Spring Security and OAuth 2.0
Unit 1: Spring Security Fundamentals
Security Intro
Spring Security Setup
Configuring Security
User Details Service
Password Encryption
Unit 2: OAuth 2.0 Integration
OAuth 2.0 Intro
OAuth2 Dependencies
Resource Server Setup
Authorization Server
Client Registration
Unit 3: Securing Microservices
Token Validation
Role-Based Access
Securing API Gateway
Testing Security
Refresh Tokens
Containerization with Docker
Unit 1: Docker Fundamentals
What is Containerization?
Docker: An Intro
Installing Docker
Docker Hub: The Basics
Your First Docker Image
Unit 2: Dockerfile Deep Dive
Dockerfile: The Basics
Dockerfile: FROM Instruction
Dockerfile: RUN Instruction
Dockerfile: COPY Instruction
Dockerfile: CMD Instruction
Unit 3: Building and Running Images
Building Your Image
Running Your Image
Listing Containers
Stopping Containers
Cleaning Up
Orchestration with Docker Compose
Unit 1: Docker Compose Fundamentals
Intro to Docker Compose
Compose File Structure
Defining Your 1st Service
Running Compose: Up & Down
Compose Project Names
Unit 2: Networking in Docker Compose
Default Network
Custom Networks
Exposing Ports
Unit 3: Volumes and Data Persistence
Intro to Volumes
Named Volumes
Bind Mounts
Unit 4: Advanced Compose Features
Environment Variables
Dependencies
Extending Compose Files
Scaling Services
Automated Testing Strategies for Microservices
Unit 1: Unit Testing Microservices
Intro to Unit Testing
JUnit Fundamentals
Mockito Basics
Testing Service Layer
Testing REST Controllers
Unit 2: Integration Testing Microservices
Intro to Integration Tests
Spring Test Context
Testing JPA Repositories
Testing REST Endpoints
Testing Inter-Service Comm
Unit 3: End-to-End Testing and Advanced Strategies
Intro to E2E Tests
RestAssured Basics
Testing Message Queues
Test-Driven Development
Contract Testing
Deployment Strategies and CI/CD Pipelines
Unit 1: Deployment Strategies for Microservices
Deployment Strategy Intro
Rolling Deployments
Blue-Green Deployments
Canary Deployments
A/B Testing
Unit 2: Introduction to CI/CD Pipelines
CI/CD: An Intro
Source Code Management
Automated Build Processes
Automated Testing
Automated Deployment
Unit 3: CI/CD Tools and Cloud Deployment
Jenkins: An Overview
GitLab CI: An Overview
Cloud Deployment Intro
Deploying to AWS
Deploying to Azure/GCP