Description

The Service Registry design pattern is a central service registry that maintains a database of available services. It acts as a lookup mechanism, allowing services to register themselves and clients to discover services. This pattern is crucial for service-oriented architectures (SOA) and microservices, facilitating dynamic discovery and decoupling of service consumers and providers.

Main Elements of the Pattern

1. Service Registry: A central database that holds the details of available services, such as their network locations and interfaces.
2. Service Provider: Registers its service with the service registry, providing metadata such as the service name, version, and network address.
3. Service Consumer: Queries the service registry to find services and obtain their metadata for consumption.
4. Heartbeat Mechanism: Ensures that the service registry has up-to-date information about the service availability through periodic heartbeat messages from the service providers.

References

• Service Registry Pattern - Microservices.io
• Project Contribution Guidelines

Acceptance Criteria

1. Implement a basic service registry that can register services and allow querying for service details.
2. Include a heartbeat mechanism for service providers to periodically update their status in the registry.
3. Provide example implementations of a service provider registering itself and a service consumer querying the registry.