DynamoDbKvStore

datafold::storage::dynamodb_backend

Struct DynamoDbKvStore 

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pub struct DynamoDbKvStore { /* private fields */ }
Expand description

DynamoDB-backed KvStore implementation

Uses a separate DynamoDB table per namespace with:

  • Partition Key (PK): user_id:key (format: user_id:actual_key)
  • Sort Key (SK): actual_key
  • Value: binary data

The user_id:key format ensures all tables use consistent partition key structure. This design enables efficient Query operations instead of expensive Scans.

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impl DynamoDbKvStore

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pub fn new( client: Arc<Client>, table_name: String, user_id: Option<String>, ) -> Self

Create a new DynamoDB KvStore for a specific table

  • table_name: The DynamoDB table name (typically namespace-specific)
  • user_id: Optional user_id that will be used as the partition key (for multi-tenant isolation)

Trait Implementations§

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impl KvStore for DynamoDbKvStore

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fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StorageResult<Option<Vec<u8>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Get a value by key
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fn put<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], value: Vec<u8>, ) -> Pin<Box<dyn Future<Output = StorageResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Put a key-value pair
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fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StorageResult<bool>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Delete a key
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fn exists<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StorageResult<bool>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check if a key exists
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fn scan_prefix<'life0, 'life1, 'async_trait>( &'life0 self, prefix: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StorageResult<Vec<(Vec<u8>, Vec<u8>)>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Scan keys with a given prefix
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fn batch_put<'life0, 'async_trait>( &'life0 self, items: Vec<(Vec<u8>, Vec<u8>)>, ) -> Pin<Box<dyn Future<Output = StorageResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Batch put operations (atomic if backend supports it)
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fn batch_delete<'life0, 'async_trait>( &'life0 self, keys: Vec<Vec<u8>>, ) -> Pin<Box<dyn Future<Output = StorageResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Batch delete operations
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fn flush<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = StorageResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Flush pending operations to storage (no-op for backends that auto-flush)
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fn backend_name(&self) -> &'static str

Get storage backend name (for debugging/metrics)
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fn execution_model(&self) -> ExecutionModel

Get the execution model of this backend Read more
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fn flush_behavior(&self) -> FlushBehavior

Get the flush behavior of this backend Read more

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