Building Cloud-Native Microservices with Spring Boot and Spring Cloud

Day 1: Spring Boot and microservice foundations

Module 1: Cloud-native applications and microservices

• Characteristics of cloud-native and distributed applications

• Comparing monolithic, modular and microservice architectures

• Benefits, operational costs and common microservice challenges

• Identifying appropriate service boundaries and business capabilities

Module 2: Building services with Spring Boot

• Structuring a Spring Boot microservice project

• Using starters, dependency injection and auto-configuration

• Managing application properties, profiles and environment variables

• Organising application, domain and infrastructure components

Module 3: Developing REST APIs

• Designing resources, endpoints and HTTP operations

• Creating controllers and request-response models

• Validating incoming data and reporting validation errors

• Implementing consistent exception handling and API responses

Module 4: Persistence and service-owned data

• Accessing relational data with Spring Data JPA

• Designing entities, repositories and query methods

• Managing transactions within an individual service

• Separating persistence models from external API models

Day 2: Service design and distributed communication

Module 5: Decomposing applications into services

• Identifying domains, responsibilities and service ownership

• Avoiding tightly coupled and overly fragmented services

• Designing service interfaces around business capabilities

• Managing shared concepts without creating shared databases

Module 6: Service-to-service communication

• Comparing synchronous and asynchronous communication

• Calling HTTP services with Spring client technologies

• Designing stable service contracts and data transfer objects

• Handling network errors, unavailable services and partial responses

Module 7: Centralised configuration

• Separating configuration from application code

• Introducing Spring Cloud Config Server and Config Client

• Managing settings for different environments and services

• Protecting secrets and controlling configuration changes

Module 8: Service discovery and load balancing

• Understanding dynamic service locations in distributed environments

• Registering and discovering service instances

• Applying client-side and platform-based load balancing

• Managing instance health, scaling and temporary unavailability

Day 3: Gateway architecture, resilience and distributed data

Module 9: API gateways with Spring Cloud Gateway

• Establishing a single entry point for client applications

• Defining routes, predicates and gateway filters

• Rewriting requests and managing cross-cutting concerns

• Handling routing errors and gateway-level fallbacks

Module 10: Resilient service communication

• Applying timeouts and controlled retries

• Implementing circuit breakers with Spring Cloud CircuitBreaker

• Understanding bulkheads and rate-limiting concepts

• Designing fallbacks without hiding critical failures

Module 11: Data consistency across services

• Understanding database-per-service architecture

• Managing operations that span multiple services

• Comparing immediate consistency with eventual consistency

• Introducing saga, compensation and idempotency patterns

Module 12: Security foundations for microservices

• Applying Spring Security to service endpoints

• Separating authentication, authorisation and business logic

• Managing credentials, secrets and secure configuration

• Addressing CORS, CSRF and internal service access