CassandraSnapshotStore
Dieser Inhalt ist noch nicht in deiner Sprache verfügbar.
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:27
SnapshotStore backed by Cassandra/Scylla. Schema mirrors the journal:
clustered on sequence_nr DESC so loadLatest is a single-row read.
When keepN > 0, excess snapshots are pruned on each save.
Implements
Section titled “Implements”Constructors
Section titled “Constructors”Constructor
Section titled “Constructor”new CassandraSnapshotStore(
options):CassandraSnapshotStore
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:37
Parameters
Section titled “Parameters”options
Section titled “options”Returns
Section titled “Returns”CassandraSnapshotStore
Methods
Section titled “Methods”close()
Section titled “close()”close():
Promise<void>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:127
Best-effort teardown.
Returns
Section titled “Returns”Promise<void>
Implementation of
Section titled “Implementation of”delete()
Section titled “delete()”delete(
persistenceId,toSeq):Promise<void>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:114
Delete snapshots up to and including toSeq. Useful for pruning.
Parameters
Section titled “Parameters”persistenceId
Section titled “persistenceId”string
number
Returns
Section titled “Returns”Promise<void>
Implementation of
Section titled “Implementation of”loadBefore()
Section titled “loadBefore()”loadBefore<
S>(persistenceId,seq,_options?):Promise<Option<Snapshot<S>>>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:104
Load the newest snapshot with sequenceNr < seq, or None.
Type Parameters
Section titled “Type Parameters”S
Parameters
Section titled “Parameters”persistenceId
Section titled “persistenceId”string
number
_options?
Section titled “_options?”PersistenceOptions
Returns
Section titled “Returns”Implementation of
Section titled “Implementation of”loadLatest()
Section titled “loadLatest()”loadLatest<
S>(persistenceId,_options?):Promise<Option<Snapshot<S>>>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:94
Load the newest snapshot for persistenceId, or None if none exist.
options.encryption is required when client-side encryption was
used at write time — the store has no other way to obtain the
master key. Stores that don’t encrypt ignore the field.
Type Parameters
Section titled “Type Parameters”S
Parameters
Section titled “Parameters”persistenceId
Section titled “persistenceId”string
_options?
Section titled “_options?”PersistenceOptions
Returns
Section titled “Returns”Implementation of
Section titled “Implementation of”save()
Section titled “save()”save<
S>(persistenceId,seq,state,_options?):Promise<Snapshot<S>>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:76
Persist a snapshot at seq — typically the seq of the latest event
applied. Optional options carry per-call preferences from the
caller (e.g. compression/encryption set on the actor). Stores that
cannot honour them silently ignore the field.
Type Parameters
Section titled “Type Parameters”S
Parameters
Section titled “Parameters”persistenceId
Section titled “persistenceId”string
number
S
_options?
Section titled “_options?”PersistenceOptions
Returns
Section titled “Returns”Promise<Snapshot<S>>
Implementation of
Section titled “Implementation of”start()
Section titled “start()”start():
Promise<void>
Defined in: src/persistence/snapshot-stores/CassandraSnapshotStore.ts:44
Returns
Section titled “Returns”Promise<void>