trait FallbackStore[Breadcrumb <: AnyRef] extends AnyRef

INTERNAL API API MAY CHANGE

Plugin API for a fallback store for events and snapshots. The journal and snapshot store implementations may, if configured to use an implementation of this API, use this fallback store to store events (resp. snapshots) while only storing a reference (aka "breadcrumb") returned by the plugin in the journal (resp. snapshot store). The event or snapshot can then be retrieved by providing the breadcrumb.

Implementations must have a constructor taking an actor system, a Config object, and the config path

Breadcrumb

the type of breadcrumb emitted and aceepted by this store: this type should have an Akka serializer registered and may not be generic

Annotations
@ApiMayChange() @InternalApi()
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AnyRef, Any
Known Subclasses
S3Fallback
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Abstract Value Members

  1. abstract def breadcumbClass: Class[Breadcrumb]
  2. abstract def loadEvent(breadcrumb: Breadcrumb, persistenceId: String, seqNr: Long, includePayload: Boolean): Future[Option[EventFromFallback]]
  3. abstract def loadSnapshot(breadcrumb: Breadcrumb, persistenceId: String, seqNr: Long): Future[Option[SnapshotFromFallback]]
  4. abstract def saveEvent(persistenceId: String, seqNr: Long, serId: Int, serManifest: String, payload: Array[Byte]): Future[Breadcrumb]
  5. abstract def saveSnapshot(persistenceId: String, seqNr: Long, writeTimestamp: Instant, eventTimestamp: Instant, serId: Int, serManifest: String, payload: Array[Byte], tags: Set[String], meta: Option[((Int, String), Array[Byte])]): Future[Breadcrumb]
  6. abstract def toBreadcrumb(maybeBreadcrumb: AnyRef): Option[Breadcrumb]

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    Deprecated

    (Since version 9)

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