GrainStateWithMetaData<TView>.WriteVector

1. Documentation
2. API reference
3. Microsoft.Orleans.EventSourcing
4. GrainStateWithMetaData<TView>
5. Properties
6. WriteVector

Markdown

WriteVector

getset

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[Orleans.Id(2)]
public string WriteVector

Metadata that is used to avoid duplicate appends. Logically, this is a (string->bit) map, the keys being replica ids But this map is represented compactly as a simple string to reduce serialization/deserialization overhead Bits are read by Orleans.EventSourcing.StateStorage.GrainStateWithMetaData.GetBit and flipped by Orleans.EventSourcing.StateStorage.GrainStateWithMetaData.FlipBit. Bits are toggled when writing, so that the retry logic can avoid appending an entry twice when retrying a failed append.