KVEngine

kv_core::engine

Struct KVEngine 

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

Main KV engine

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impl KVEngine

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pub async fn new(config: KVConfig) -> KVResult<Self>

Create a new KV engine

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Returns error if storage initialization fails

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pub async fn get( &self, database_id: DatabaseId, key: &Key, ) -> KVResult<Option<Value>>

Get a value by key

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Returns error if storage operation fails

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pub async fn set( &self, database_id: DatabaseId, key: Key, value: Value, ttl: Option<TTL>, ) -> KVResult<()>

Set a value with optional TTL

§Errors

Returns error if storage operation fails

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pub async fn delete(&self, database_id: DatabaseId, key: &Key) -> KVResult<bool>

Delete a key

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Returns error if storage operation fails

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pub async fn exists(&self, database_id: DatabaseId, key: &Key) -> KVResult<bool>

Check if a key exists

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Returns error if storage operation fails

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pub async fn expire( &self, database_id: DatabaseId, key: &Key, ttl: TTL, ) -> KVResult<bool>

Set TTL for an existing key

§Errors

Returns error if storage operation fails

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pub async fn ttl( &self, database_id: DatabaseId, key: &Key, ) -> KVResult<Option<TTL>>

Get remaining TTL for a key

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Returns error if storage operation fails

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pub async fn keys(&self, database_id: DatabaseId) -> KVResult<Vec<Key>>

Get all keys in a database

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Returns error if storage operation fails

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pub async fn keys_pattern( &self, database_id: DatabaseId, pattern: &str, ) -> KVResult<Vec<Key>>

Get keys matching a pattern

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Returns error if storage operation fails

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pub async fn clear_database(&self, database_id: DatabaseId) -> KVResult<()>

Clear all data in a database

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Returns error if storage operation fails

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pub async fn get_stats(&self) -> KVResult<KVStats>

Get engine statistics

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Returns error if statistics calculation fails

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pub async fn flush(&self) -> KVResult<()>

Flush all pending writes

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Returns error if flush operation fails

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pub async fn close(&self) -> KVResult<()>

Close the engine and cleanup resources

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Returns error if cleanup fails

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pub async fn publish(&self, channel: &str, message: Value) -> KVResult<usize>

Publish a message to a channel

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Returns error if publishing fails

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pub async fn subscribe( &self, pattern: ChannelPattern, ) -> KVResult<UnboundedReceiver<PubSubMessage>>

Subscribe to a channel pattern

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Returns error if subscription fails

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pub async fn unsubscribe(&self, pattern: &ChannelPattern) -> KVResult<usize>

Unsubscribe from a channel pattern

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Returns error if unsubscription fails

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pub async fn subscribe_to_invalidations( &self, ) -> KVResult<UnboundedReceiver<PubSubMessage>>

Subscribe to cache invalidation events

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Returns error if subscription fails

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