Eureka Page

Eureka

Eureka is a service discovery tool that is part of the Spring Cloud suite of tools, designed to help build cloud-native applications. It acts as a registry where microservices can register themselves and discover other services to communicate with. This is crucial in a microservice architecture, where knowing the location of all service instances at any given time can be challenging due to their dynamic nature. Eureka consists of a server (the Eureka Server) where service instances are registered and a client component that is included in the service application to handle the registration and discovery.

Eureka follows the AP (Availability/Partition Tolerance) principles of the CAP theorem, prioritizing availability and partition tolerance over consistency. This approach makes Eureka highly suitable for distributed systems, where network partitions can occur, and service availability is critical. Services registered with a Eureka server keep sending heartbeats to signal their availability. If a service fails to send a heartbeat within a configurable timeframe, Eureka removes it from the registry, thus ensuring that only available services are discoverable. Eureka’s simplicity in setup and integration with Spring Boot applications makes it a popular choice for implementing service discovery in microservices architectures.