CodeReady

From Fundamentals to Scalability

Enterprise Backend Java Developer
with Spring Boot

Master Production-Grade Backend Development - Deep dive into Java, Spring Boot, microservices, REST APIs, Kafka, databases, and building scalable enterprise systems

Overview Curriculum Projects FAQ

📚

What You'll Master

Java fundamentals, Spring Boot, microservices architecture, REST APIs, databases, message queues, and production deployment

Start Here 📖

12-Week Curriculum

Structured learning path from Java fundamentals to production-grade backend development

12 Weeks 🚀

Capstone Projects

E-commerce Platform, Microservices Architecture, Production Deployment

3 Projects ❓

Frequently Asked Questions

Everything you need to know about the Enterprise Backend Java Developer bootcamp

FAQ

What You'll Master

Transform into a production-ready Enterprise Backend Java Developer with Spring Boot expertise

☕ Java Fundamentals

Master core Java concepts, OOP principles, collections framework, multithreading, and modern Java features (Java 8+)

🌱 Spring Boot Framework

Build RESTful APIs, understand dependency injection, Spring MVC, Spring Data JPA, and Spring Boot auto-configuration

🏗️ Microservices Architecture

Design and implement microservices, service discovery, API gateways, and distributed system patterns

💾 Database Integration

Work with JPA/Hibernate, database migrations, transaction management, and optimize database queries

📨 Message Queues & Event Streaming

Implement asynchronous communication with Kafka, RabbitMQ, and event-driven architectures

🚀 Production Deployment

Deploy Spring Boot applications with Docker, Kubernetes, CI/CD pipelines, monitoring, and scaling strategies

12 Weeks Intensive

3 Portfolio Projects

24/7 Support Available

100% Production-Ready

12-Week Intensive Curriculum

Structured learning path from foundations to production deployment

Phase 1: Foundations (Weeks 1-3)

Week 1: Java Fundamentals & OOP

Core Java concepts - variables, data types, operators, control flow
Object-Oriented Programming - classes, objects, inheritance, polymorphism
Java Collections Framework - List, Set, Map, Queue
Exception handling and best practices
Modern Java features (Java 8+) - lambdas, streams, Optional

📝 Assignment: Build a library management system using OOP principles. Implement classes for Book, Author, Library with proper encapsulation, inheritance, and polymorphism. Use Java Collections for data storage and Java 8+ features for operations.

📊 Quiz: Java fundamentals, OOP concepts, collections framework, exception handling, modern Java features

Week 2: Spring Boot Fundamentals

Spring Boot introduction and auto-configuration
Dependency Injection and Inversion of Control (IoC)
Spring Boot starters and project structure
Building RESTful APIs with Spring MVC
Spring Boot Actuator for monitoring

📝 Assignment: Create a RESTful API for a task management system. Implement CRUD operations, use Spring Boot auto-configuration, dependency injection, and add Actuator endpoints for health checks and metrics.

📊 Quiz: Spring Boot concepts, dependency injection, REST API design, Spring MVC, Actuator features

Week 3: Database Integration with Spring Data JPA

JPA/Hibernate fundamentals and entity mapping
Spring Data JPA repositories and query methods
Database relationships - One-to-One, One-to-Many, Many-to-Many
Transaction management and isolation levels
Database migrations with Flyway/Liquibase

📝 Assignment: Extend the task management API with database persistence. Use Spring Data JPA, implement entity relationships, add custom query methods, handle transactions, and set up database migrations. Connect to PostgreSQL database.

📊 Quiz: JPA concepts, entity mapping, Spring Data repositories, relationships, transaction management, migration tools

Phase 2: Advanced Spring Boot & Microservices (Weeks 4-6)

Week 4: Spring Boot Advanced Features

Spring Boot configuration properties and profiles
Custom auto-configuration and starter creation
Spring Boot testing - unit tests, integration tests
REST API best practices - validation, error handling, documentation
API versioning and OpenAPI/Swagger integration

📝 Assignment: Enhance your REST API with input validation, comprehensive error handling, API documentation using Swagger/OpenAPI, and implement multiple environment configurations (dev, staging, prod). Write unit and integration tests with 80%+ coverage.

📊 Quiz: Spring Boot configuration, auto-configuration, testing strategies, REST API best practices, API documentation

Week 5: Microservices Architecture

Microservices vs monolithic architecture
Service discovery with Eureka/Consul
API Gateway pattern with Spring Cloud Gateway
Inter-service communication - REST, gRPC
Distributed configuration with Spring Cloud Config

📝 Assignment: Design and implement a microservices architecture with 3 services (User Service, Order Service, Product Service). Set up service discovery, API gateway, and inter-service communication. Implement distributed configuration management.

📊 Quiz: Microservices patterns, service discovery, API gateway, inter-service communication, distributed configuration

Week 6: Message Queues & Event-Driven Architecture

Message queues - Kafka, RabbitMQ fundamentals
Event-driven architecture patterns
Spring Kafka integration and producers/consumers
RabbitMQ with Spring AMQP
Event sourcing and CQRS patterns

📝 Assignment: Implement an event-driven order processing system using Kafka. Create producers for order events, consumers for inventory and notification services. Implement error handling, retry mechanisms, and dead letter queues. Add RabbitMQ for email notifications.

📊 Quiz: Message queue concepts, Kafka architecture, RabbitMQ patterns, event-driven design, event sourcing, CQRS

Phase 3: Security, Testing & Performance (Weeks 7-9)

Week 7: Spring Security & Authentication

Spring Security fundamentals and architecture
Authentication mechanisms - JWT, OAuth2, Basic Auth
Authorization and role-based access control (RBAC)
Securing REST APIs and endpoints
Password encoding and security best practices

📝 Assignment: Implement JWT-based authentication and authorization for your REST API. Add role-based access control (Admin, User, Guest), secure endpoints, implement password encryption, and add OAuth2 integration with Google/GitHub. Include security testing.

📊 Quiz: Spring Security architecture, authentication mechanisms, JWT tokens, OAuth2, authorization patterns, security best practices

Week 8: Advanced Testing & Quality Assurance

Unit testing with JUnit 5 and Mockito
Integration testing with Spring Boot Test
Test-driven development (TDD) practices
Code coverage and quality metrics
Contract testing and API testing strategies

📝 Assignment: Write comprehensive test suite for your microservices. Achieve 80%+ code coverage with unit and integration tests. Implement TDD for a new feature, add contract tests for inter-service communication, and set up CI/CD pipeline with automated testing.

📊 Quiz: Testing strategies, JUnit 5, Mockito, Spring Boot testing, TDD practices, code coverage, contract testing

Week 9: Performance Optimization & Caching

Application performance monitoring and profiling
Caching strategies - Spring Cache, Redis, Caffeine
Database query optimization and N+1 problem
Connection pooling and resource management
Load testing and performance benchmarking

📝 Assignment: Optimize your application performance. Implement Redis caching for frequently accessed data, optimize database queries, fix N+1 problems, set up connection pooling, and perform load testing with JMeter/Gatling. Document performance improvements with before/after metrics.

📊 Quiz: Performance monitoring, caching strategies, query optimization, connection pooling, load testing, performance metrics

Phase 4: DevOps & Production Deployment (Weeks 10-12)

Week 10: Docker & Containerization

Docker fundamentals and containerization
Creating Dockerfiles for Spring Boot applications
Docker Compose for multi-container applications
Container orchestration basics
Best practices for containerized Java applications

📝 Assignment: Containerize your microservices application with Docker. Create optimized Dockerfiles, use Docker Compose to orchestrate all services (including databases, message queues), implement multi-stage builds, and optimize image sizes. Document containerization strategy.

📊 Quiz: Docker concepts, Dockerfile best practices, Docker Compose, container orchestration, Java containerization

Week 11: Kubernetes & Cloud Deployment

Kubernetes fundamentals - pods, services, deployments
Deploying Spring Boot applications to Kubernetes
Cloud platforms - AWS, GCP, Azure
CI/CD pipelines with GitHub Actions/Jenkins
Infrastructure as Code (IaC) with Terraform

📝 Assignment: Deploy your microservices to Kubernetes (GKE/EKS/AKS). Set up deployments, services, ingress, config maps, and secrets. Create CI/CD pipeline with GitHub Actions that builds, tests, and deploys to Kubernetes. Use Terraform for infrastructure provisioning. Implement auto-scaling.

📊 Quiz: Kubernetes concepts, cloud deployment, CI/CD pipelines, Infrastructure as Code, auto-scaling, monitoring

Week 12: Monitoring, Logging & Production Best Practices

Application monitoring with Prometheus and Grafana
Centralized logging with ELK stack (Elasticsearch, Logstash, Kibana)
Distributed tracing with Zipkin/Jaeger
Health checks and alerting
Production best practices and troubleshooting

📝 Assignment: Set up comprehensive monitoring and logging for your production deployment. Implement Prometheus metrics, Grafana dashboards, centralized logging with ELK stack, distributed tracing, and alerting. Create runbooks for common production issues. Perform disaster recovery testing.

📊 Quiz: Monitoring tools, logging strategies, distributed tracing, alerting, production best practices, troubleshooting techniques

Weeks 1-3: Programming 101 (Phase 1)

Week 1

Day 1: Variables, types, operators
Day 2: Control flow & boolean logic
Day 3: Loops & iteration patterns
Day 4: Functions/methods, scope & returns
Day 5: I/O & core collections (list/array/dict)

Assignment: CLI calculator (both languages). Quiz: 10 MCQs + 1 coding.

Week 2

Day 1: OOP basics (classes/objects)
Day 2: Encapsulation, inheritance, polymorphism
Day 3: Exceptions & error handling
Day 4: File I/O in Java & Python
Day 5: OOP workshop (build a mini library)

Assignment: Book Library class with save/load. Quiz: 10 MCQs + 1 coding.

Week 3

Day 1: Modular programming & packaging
Day 2: Complexity & Big-O
Day 3: Debugging & unit testing (JUnit/pytest)
Day 4: Git/GitHub basics; PR etiquette
Day 5: Mini-project: CLI To-Do app (CRUD)

Assignment: To-Do app with tests & README. Quiz: 10 MCQs + 1 coding.

Weeks 4-6: Data Structures (Phase 2)

Week 4

Day 1: Arrays & lists
Day 2: Linked lists (SLL/DLL)
Day 3: Stacks (LIFO) & use-cases
Day 4: Queues/Deque & variants
Day 5: Lab: implement DS in both languages

Assignment: Implement List/Stack/Queue APIs. Quiz: 10 MCQs + 1 coding.

Week 5

Day 1: Trees & recursion basics
Day 2: BST ops (insert/delete/search)
Day 3: Graphs & adjacency models
Day 4: Traversals: DFS/BFS
Day 5: Workshop: paths, levels, cycles

Assignment: BST + BFS on grid; README with Big-O. Quiz: 10 MCQs + 1 coding.

Week 6

Day 1: Hash tables (hashing, collisions)
Day 2: Heaps/PQs; heap sort
Day 3: Recursion deep-dive
Day 4: Memory mgmt, GC concepts
Day 5: DS practice set (mixed)

Assignment: LRU Cache (hashmap+DLL). Quiz: 10 MCQs + 1 coding.

Weeks 7-9: Problem Solving (Phase 3)

Focus on patterns and 30-40 easy/medium LeetCode-style questions with guided walkthroughs. Daily flow: short lecture goals → key takeaways → real-world analogy → hands-on exercise → stretch → review.

Week 7

Day 1: Problem analysis & constraints; pattern library intro
Day 2: Two-pointers; sorted arrays & string scans
Day 3: Sliding window (fixed & variable)
Day 4: Sorting fundamentals; stability & when to use what
Day 5: Review set (6-8 questions) + live walkthrough

Assignment: 10 questions (2× two-pointers, 4× sliding-window, 4× sorting). Quiz: 10 MCQs + 1 coding.

Week 8

Day 1: Recursion patterns & backtracking (subsets, permutations)
Day 2: Dynamic Programming I (memoization vs tabulation)
Day 3: DP II (knapsack, coin change, LIS ideas)
Day 4: Graph algorithms I (BFS shortest path, topo sort)
Day 5: Mock interview #1 (15-min DSA + 10-min feedback per student)

Assignment: 10 questions (3× recursion/backtracking, 5× DP, 2× graph BFS). Quiz: 10 MCQs + 1 coding.

Week 9

Day 1: Greedy techniques; exchange arguments & proofs of correctness (informal)
Day 2: Advanced graphs (Dijkstra intro; when BFS vs Dijkstra)
Day 3: Mixed set (hashing, heap, prefix sum)
Day 4: System-aware problem solving (I/O limits, memory caps)
Day 5: Mock interview #2 + feedback & personalized plan

Assignment: 10 questions (2× greedy, 3× heap, 3× hashing/prefix, 2× graph). Quiz: 10 MCQs + 1 coding.

Weeks 10-11: Databases (Phase 4)

Week 10

Day 1: Relational model, tables, PK/FK; ER → schema
Day 2: Normalization (1NF-3NF); denormalization trade-offs
Day 3: SELECT, WHERE, ORDER BY, LIMIT; CRUD basics
Day 4: Joins (INNER/LEFT/RIGHT/FULL), GROUP BY, HAVING
Day 5: Lab: design a Course–Student–Enrollment schema

Assignment: Create schema & seed data; 12 queries (mix of joins & groups). Quiz: 12 MCQs + 1 query.

Week 11

Day 1: Indexes & query plans; when indexes hurt/help
Day 2: Transactions, ACID; isolation levels & anomalies
Day 3: Stored routines & views (intro), pagination patterns
Day 4: NoSQL overview (key-value, document); when to choose which
Day 5: Mini-project: Analytics queries & simple dashboard export (CSV/JSON)

Assignment: Optimize queries (add/remove indexes), measure timings, document rationale. Quiz: 12 MCQs + 1 query.

Weeks 12-13: System Design (Phase 5)

Week 12

Day 1: Client-server, REST, HTTP verbs, idempotency; API design (resources, pagination)
Day 2: Statelessness, session vs token auth (concepts); rate limiting basics
Day 3: Caching (CDN, reverse proxy, app-level); cache invalidation strategies
Day 4: Load balancing (round-robin, least-conn); health checks; blue/green overview
Day 5: Design exercise: URL Shortener (read-heavy, cache, DB schema, API)

Assignment: Write a 2-page design doc + simple API spec (OpenAPI snippet encouraged). Quiz: 12 MCQs.

Week 13

Day 1: Databases at scale: replication vs sharding; read/write paths
Day 2: Consistency models; CAP & PACELC intuition; queues for decoupling
Day 3: Observability 101 (logs, metrics, traces) & SLOs; error budgets
Day 4: Design exercise: News Feed/Timeline (fan-out, denorm, caches)
Day 5: Mock system design interview + structured feedback rubric

Assignment: 3-page design doc with diagram and capacity estimates (QPS, storage). Quiz: 12 MCQs.

Week 14: Developer Tools & Productivity (Phase 6)

Week 14

Day 1: IDE mastery: IntelliJ IDEA, Eclipse, VS Code setup and productivity tips
Day 2: Debugging techniques: Breakpoints, step debugging, remote debugging, profiling
Day 3: Code quality tools: SonarQube, Checkstyle, SpotBugs for code analysis
Day 4: Performance profiling: JProfiler, VisualVM, memory analysis, CPU profiling
Day 5: Developer productivity: Git workflows, code review best practices, documentation tools

Assignment: Profile and optimize your capstone project using profiling tools. Quiz: 10 MCQs on developer tools and productivity.

Week 15: Capstone Project (Phase 7)

Build 2-3 complete end-to-end applications that combine API + Database + Frontend concepts with AI enhancement. Teams of 2-3; PR-based workflow on GitHub.

Project 1: Smart To-Do with Analytics (REST API, MySQL, dashboard)
Project 2: E-Commerce Lite (Catalog, cart, orders, inventory consistency)
Project 3: Minimal Chat Service (User/channel models, message APIs, pagination)

Deliverables: Design doc (3-5 pages), API spec (OpenAPI), DB schema (ER + DDL), runnable code, README, demo video (≤5 min).

🚀 Game-Changing Capstone Projects

Build production-grade AI applications that will make recruiters stop scrolling

      💼 These aren't toy projects! Each capstone demonstrates production-grade enterprise backend development with real-world patterns that companies are actively hiring for.
    

🛒 Project 1: E-commerce Backend Platform

Full-Featured Online Store Backend

🎯 Why This Project Stands Out:

This comprehensive e-commerce backend demonstrates your ability to build production-ready enterprise applications with Spring Boot, covering all essential backend patterns used in real-world systems.

Spring Boot Spring Data JPA PostgreSQL Redis JWT Security

✨ Core Features You'll Build

👤 User Management: Registration, authentication, JWT tokens, role-based access control
📦 Product Catalog: CRUD operations, categories, search, filtering, pagination
🛒 Shopping Cart: Add/remove items, cart persistence, session management
💳 Order Processing: Order creation, payment integration, order history
📊 Admin Dashboard: Analytics, user management, product management
🔍 Search & Filtering: Full-text search, advanced filtering, sorting

🎓 What You'll Master

RESTful API design and best practices
Database design and optimization
Spring Security and JWT implementation
Caching strategies with Redis
Exception handling and validation
API documentation with Swagger

💼 Career Impact: E-commerce backends are the foundation of many enterprise applications. This project showcases skills directly applicable to most backend developer roles!

🏗️ Project 2: Microservices Architecture

Distributed System with Service Communication

🎯 The Enterprise Standard:

Microservices architecture is what every modern enterprise uses. This project demonstrates your ability to design, build, and deploy distributed systems with proper service communication, discovery, and coordination.

Microservices Spring Cloud Kafka Docker API Gateway

🔧 Services You'll Build

👥 User Service: User management, authentication, authorization
📦 Product Service: Product catalog, inventory management
🛒 Order Service: Order processing, order history
💳 Payment Service: Payment processing, transaction management
📧 Notification Service: Email notifications, SMS alerts
🔍 API Gateway: Request routing, load balancing, rate limiting

🔥 Advanced Features

🔗 Service Discovery: Eureka/Consul for service registration
📨 Event-Driven Communication: Kafka for async messaging
🔄 Distributed Transactions: Saga pattern implementation
⚡ Circuit Breaker: Resilience4j for fault tolerance
📊 Centralized Configuration: Spring Cloud Config
🔐 Security: OAuth2, JWT across services

🛠️ Real-World Patterns

Service-to-service communication (REST, gRPC)
Event sourcing and CQRS
Distributed tracing and monitoring
Database per service pattern
API versioning and backward compatibility

🌟 Industry Demand: Microservices expertise is highly sought after. Companies like Netflix, Amazon, and Uber use microservices architecture, and they're always hiring engineers with these skills!

🚀 Project 3: Production Deployment & DevOps

CI/CD, Containerization & Cloud Deployment

🎯 Production-Ready Deployment:

Take your microservices application and deploy it to production with industry-standard DevOps practices. This project demonstrates your ability to handle the entire software lifecycle from development to deployment.

Docker Kubernetes CI/CD Monitoring Cloud

🏗️ Infrastructure & Deployment

🐳 Containerization

Multi-stage Docker builds for optimized images
Docker Compose for local development
Container security best practices
Image optimization and size reduction

☸️ Kubernetes Orchestration

Deployments, Services, Ingress configuration
ConfigMaps and Secrets management
Horizontal Pod Autoscaling (HPA)
Health checks and liveness probes

🔄 CI/CD Pipeline

GitHub Actions/Jenkins pipeline setup
Automated testing and code quality checks
Automated builds and deployments
Blue-green and canary deployment strategies

📊 Monitoring & Observability

Prometheus metrics collection
Grafana dashboards for visualization
ELK stack for centralized logging
Distributed tracing with Zipkin/Jaeger

🔬 Advanced DevOps Practices

🏗️ Infrastructure as Code: Terraform for cloud provisioning
🔐 Secrets Management: Vault or cloud-native solutions
⚡ Auto-scaling: Horizontal and vertical scaling strategies
🛡️ Security: Container scanning, vulnerability management
📈 Performance: Load testing and optimization

💎 Portfolio Differentiator: Most developers can code, but few can deploy and maintain production systems. DevOps skills command premium salaries and are essential for senior backend roles!

🎓 Full Support for Every Project

📝

Weekly Code Reviews

Get expert feedback on your implementation

👥

Office Hours

1-on-1 guidance when you're stuck

🚀

Deployment Help

Launch your projects to production

📹

Demo Recording

Create impressive presentation videos

Register for Free Webinar

What You'll Master

☕ Java Fundamentals

🌱 Spring Boot Framework

🏗️ Microservices Architecture

💾 Database Integration

📨 Message Queues & Event Streaming

🚀 Production Deployment

12-Week Intensive Curriculum

Phase 1: Foundations (Weeks 1-3)

Phase 2: Advanced Spring Boot & Microservices (Weeks 4-6)

Phase 3: Security, Testing & Performance (Weeks 7-9)

Phase 4: DevOps & Production Deployment (Weeks 10-12)

Weeks 1-3: Programming 101 (Phase 1)

Week 1

Week 2

Week 3

Weeks 4-6: Data Structures (Phase 2)

Week 4

Week 5

Week 6

Weeks 7-9: Problem Solving (Phase 3)

Week 7

Week 8

Week 9

Weeks 10-11: Databases (Phase 4)

Week 10

Week 11

Weeks 12-13: System Design (Phase 5)

Week 12

Week 13

Week 14: Developer Tools & Productivity (Phase 6)

Week 14

Week 15: Capstone Project (Phase 7)

🚀 Game-Changing Capstone Projects

🛒 Project 1: E-commerce Backend Platform

✨ Core Features You'll Build

🎓 What You'll Master

🏗️ Project 2: Microservices Architecture

🔧 Services You'll Build

🔥 Advanced Features

🛠️ Real-World Patterns

🚀 Project 3: Production Deployment & DevOps

🏗️ Infrastructure & Deployment

🔬 Advanced DevOps Practices

🎓 Full Support for Every Project

Frequently Asked Questions

⚠️ The Job Market Harsh Reality

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