NOTE
Spring Cloud Overview
Spring Cloud as an integration ecosystem for distributed-service concerns, with version-train compatibility and evolving components.
This is a historical learning note and may contain outdated or incomplete understanding.
Spring Cloud is an ecosystem of integrations for service discovery, configuration, gateways, declarative clients, load balancing, resilience, messaging, and observability around Spring applications.
It is not one fixed architecture. Individual projects come and go, and Spring Cloud release trains are tied to compatible Spring Boot generations.
Design distributed-system semantics first—deadlines, retries, idempotency, discovery staleness, overload, consistency, observability—then choose the Spring component implementing that policy.