Spring Boot Microservices
20 lessons in this section of the Spring Boot tutorial. Work through them in order, or jump to the one you need.
- 1.Introduction to Microservices
Microservices is an architectural style that structures an application as a collection of small, independently deployable services, each running in its own process and…
- 2.Monolithic vs Microservices
A monolithic application packages all functionality — UI, business logic, and data access — into a single deployable unit.
- 3.Spring Cloud
Spring Cloud is an umbrella project that provides production-ready building blocks for microservices on the JVM.
- 4.Service Discovery
Service discovery is the mechanism by which microservices dynamically locate each other at runtime without hard-coded host/port configuration.
- 5.Eureka Server
Eureka Server is Netflix's service registry, integrated into Spring Cloud.
- 6.Eureka Client
A Eureka Client is any microservice that registers with the Eureka Server and uses it to discover other services.
- 7.API Gateway
An API Gateway is the single entry point for all client requests in a microservices architecture.
- 8.Spring Cloud Gateway
Spring Cloud Gateway (SCG) is the official API gateway implementation for Spring Boot microservices.
- 9.Load Balancing
Load balancing distributes incoming requests across multiple instances of a service to maximise throughput, minimise latency, and avoid overloading any single instance.
- 10.OpenFeign
Spring Cloud OpenFeign is a declarative HTTP client for microservices.
- 11.Circuit Breaker
The Circuit Breaker pattern prevents cascading failures in a distributed system by wrapping remote calls with a state machine that monitors failure rates.
- 12.Resilience4j
Resilience4j is a lightweight fault-tolerance library for Java, designed as the replacement for Netflix Hystrix in Spring Boot 3.x.
- 13.Distributed Tracing
Distributed tracing tracks a request as it flows through multiple services, providing end-to-end visibility into latency, errors, and dependencies.
- 14.Config Server
Spring Cloud Config Server provides centralised external configuration for distributed systems.
- 15.Centralized Configuration
Centralised configuration manages all service properties from a single source of truth, eliminating configuration drift across environments and instances.
- 16.Service Registry
A service registry is a directory of available service instances.
- 17.Inter-Service Communication
Microservices communicate through synchronous HTTP calls or asynchronous messaging.
- 18.Fault Tolerance
Fault tolerance is the ability of a distributed system to continue operating correctly in the presence of partial failures.
- 19.Rate Limiting
Rate limiting controls the number of requests a client is permitted to make within a time window.
- 20.Microservice Security
Securing a microservices architecture requires protecting traffic at multiple layers: authenticating external clients at the API Gateway, propagating identity between…