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Java Backend Development Curriculum

Week 1: Introduction to Java Backend Development ▶

Module 1.1: Backend Development Overview

What is backend development?
Key components of backend systems (Databases, Servers, APIs).
Understanding the role of Java in backend development.

Module 1.2: Java Essentials Refresher

Review of Core Java concepts (OOP principles, data types, collections, streams, etc.).
Key libraries in Java (java.util, java.nio, java.sql).

Module 1.3: Setting up the Development Environment

Installing JDK and IDE (IntelliJ IDEA, Eclipse).
Introduction to Git and version control basics.
Introduction to Maven and Gradle for dependency management.

Week 2: Advanced Core Java and Design Patterns ▶

Module 2.1: Advanced Java Concepts

Java 8 features (Lambda Expressions, Streams, Optional, Functional Interfaces).
Understanding Multithreading and Concurrency.
Memory Management and Garbage Collection in Java.

Module 2.2: Introduction to Design Patterns

Creational Patterns (Singleton, Factory).
Structural Patterns (Adapter, Decorator).
Behavioral Patterns (Observer, Strategy).

Week 3: Introduction to Spring Framework ▶

Module 3.1: Overview of Spring Framework

What is Spring? Understanding the Spring Ecosystem.
Dependency Injection (DI) and Inversion of Control (IoC).
Spring Boot vs. Spring Framework.

Module 3.2: Setting up Spring Boot Projects

Creating a Spring Boot application using Spring Initializr.
Understanding Spring Boot auto-configuration and starter dependencies.
Introduction to Spring Boot DevTools for development efficiency.

Module 3.3: Spring Boot Basics

Understanding Controllers, Services, and Repositories.
Building a simple RESTful API with Spring Boot.

Week 4: Deep Dive into Spring Boot and JPA (Java Persistence API) ▶

Module 4.1: Spring Data JPA

Introduction to JPA and Hibernate.
Mapping Java objects to database entities.
Working with EntityManager, Repositories, and JPQL (Java Persistence Query Language).

Module 4.2: Spring Boot and Databases

Configuring a relational database in Spring Boot.
Handling transactions and entity relationships (One-to-One, One-to-Many, Many-to-Many).
Spring Data projections and DTOs (Data Transfer Objects).

Week 5: Microservices Architecture with Spring Boot ▶

Module 5.1: Introduction to Microservices

What are Microservices? Benefits and Challenges.
Monolithic vs. Microservices architecture.
Key principles of microservices design.

Module 5.2: Building Microservices with Spring Boot

Breaking down a monolithic application into microservices.
Creating independent, loosely coupled services.
Using Spring Boot for building RESTful microservices.

Module 5.3: Service Discovery with Eureka

Introduction to Eureka server for service discovery.
Setting up Eureka Client and Server in a microservices setup.

Week 6: Communication Between Microservices ▶

Module 6.1: RESTful API Communication

Calling REST APIs between microservices.
Using RestTemplate and WebClient.

Module 6.2: Synchronous and Asynchronous Communication

Synchronous communication (HTTP/REST).
Asynchronous communication (Message Queues, Event-Driven Architecture).
Introduction to Apache Kafka.

Module 6.3: API Gateway and Load Balancing

Introduction to API Gateway with Spring Cloud Gateway.
Load balancing with Spring Cloud Ribbon.

Week 7: Spring Security and Authentication ▶

Module 7.1: Introduction to Spring Security

What is Spring Security? Why use it?
Authentication and Authorization in Spring Security.
Securing REST APIs with Spring Security.

Module 7.2: JWT (JSON Web Token) for Authentication

Understanding JWT and OAuth2.
Implementing JWT-based authentication in microservices.

Week 8: CI/CD with Jenkins and GitHub Actions ▶

Module 8.1: Introduction to Continuous Integration (CI) and Continuous Deployment (CD)

What are CI/CD and why are they important?
Overview of the CI/CD pipeline.

Module 8.2: Setting up Jenkins for CI/CD

Installing Jenkins and creating a pipeline.
Integrating Jenkins with GitHub for automatic builds and testing.
Automating deployment to a test environment.

Module 8.3: GitHub Actions for CI/CD

Overview of GitHub Actions.
Setting up CI/CD pipelines with GitHub Actions.

Week 9: Introduction to Kubernetes for Microservices ▶

Module 9.1: Overview of Kubernetes

What is Kubernetes? Why use Kubernetes?
Key Kubernetes concepts (Pods, Services, Deployments).

Module 9.2: Deploying Microservices on Kubernetes

Setting up Kubernetes clusters.
Deploying Spring Boot microservices to Kubernetes.

Module 9.3: Kubernetes Networking and Scaling

Understanding Pod networking.
Horizontal pod scaling and load balancing.

Week 10: Apache Kafka for Event-Driven Microservices ▶

Module 10.1: Introduction to Apache Kafka

What is Kafka? Why use Kafka in microservices?
Kafka Producers and Consumers.
Kafka Topics and Partitions.

Module 10.2: Integrating Kafka with Spring Boot

Using Spring Kafka to send and receive messages.
Event-driven architecture with Kafka.

Module 10.3: Kafka Streams and Processing

Kafka Streams for real-time data processing.
Designing event-driven applications with Kafka.

Week 11: Monitoring, Logging, and Troubleshooting ▶

Module 11.1: Application Monitoring with Spring Boot

Introduction to Actuator in Spring Boot for health checks and metrics.
Monitoring microservices with Prometheus and Grafana.

Module 11.2: Logging and Distributed Tracing

Setting up logging with SLF4J and Logback.
Distributed tracing with Spring Cloud Sleuth and Zipkin.

Module 11.3: Troubleshooting and Debugging

Debugging microservices with logs and tracing.
Common issues in microservices and how to resolve them.

Week 12: Final Project - Building a Complete Java Backend System ▶

Module 12.1: Project Setup and Architecture

Define the architecture of your project (e.g., an e-commerce platform or a library system).
Choose the technologies to implement (Spring Boot, Kafka, Microservices, Kubernetes, CI/CD).

Module 12.2: Implementation and Integration

Develop and integrate all microservices.
Apply security, CI/CD, and Kafka for messaging.

Module 12.3: Deployment and Testing

Deploy the system to a Kubernetes cluster.
Perform integration and unit tests.

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Java Backend Development

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