Concepts¶

Core ideas that explain how Failover stores, recovers, and expires referential data.

classDiagram
    class FailoverAspect {
        +failoverAround(ProceedingJoinPoint)
    }
    class FailoverHandler {
        +store(Failover, args, payload) T
        +recover(Failover, args, clazz, cause) T
        +clean()
    }
    class FailoverStore {
        +store(ReferentialPayload)
        +find(name, key) Optional
        +delete(ReferentialPayload)
        +cleanByExpiry(Instant)
    }
    class KeyGenerator {
        +key(Failover, List~Object~) String
    }
    class ExpiryPolicy {
        +computeExpiry(Failover) Instant
        +isExpired(Failover, ReferentialPayload) boolean
    }
    class PayloadEnricher {
        +enrichOnStore(...) ReferentialPayload
        +enrichOnRecover(...) ReferentialPayload
    }

    FailoverAspect --> FailoverHandler : delegates to
    FailoverHandler --> FailoverStore : store / find
    FailoverHandler --> KeyGenerator : derive key
    FailoverHandler --> ExpiryPolicy : compute / check expiry
    FailoverHandler --> PayloadEnricher : enrich on store/recover

Next Steps¶

• How It Works — start here for the full picture
• Getting Started — add Failover to your project