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EnhancedPostgresBackend

Struct EnhancedPostgresBackend 

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pub struct EnhancedPostgresBackend { /* private fields */ }

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impl EnhancedPostgresBackend

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pub async fn new(config: EnhancedPostgresConfig) -> StateResult<Self>

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pub async fn begin_transaction( &self, isolation_level: IsolationLevel, ) -> StateResult<PostgresTransaction<'_>>

Begin a new transaction with specified isolation level

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pub async fn batch_copy(&self, entries: &[(&[u8], &[u8])]) -> StateResult<()>

Batch insert using COPY command for maximum performance

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pub async fn batch_put(&self, entries: &[(&[u8], &[u8])]) -> StateResult<()>

Batch put operation (standard transaction version)

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pub async fn query_by_metadata( &self, json_path: &str, value: &Value, ) -> StateResult<Vec<(Vec<u8>, Vec<u8>)>>

Query with JSONB path expressions

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pub async fn put_with_version( &self, key: &[u8], value: &[u8], expected_version: Option<i64>, ) -> StateResult<i64>

Put with optimistic locking using version column

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pub async fn put_with_metadata( &self, key: &[u8], value: &[u8], metadata: Value, ) -> StateResult<()>

Put with metadata

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pub async fn put_with_ttl( &self, key: &[u8], value: &[u8], ttl: Duration, ) -> StateResult<()>

Put with TTL

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pub async fn cleanup_expired(&self) -> StateResult<usize>

Clean up expired entries

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pub async fn acquire_advisory_lock(&self, lock_id: i64) -> StateResult<bool>

Acquire PostgreSQL advisory lock

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pub async fn release_advisory_lock(&self, lock_id: i64) -> StateResult<()>

Release PostgreSQL advisory lock

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pub async fn notify(&self, channel: &str, payload: &str) -> StateResult<()>

Notify listeners on a channel (LISTEN/NOTIFY)

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pub async fn try_become_leader( &self, election_key: &str, ttl: Duration, ) -> StateResult<bool>

Leader election using advisory locks with timeout

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pub async fn vacuum_analyze(&self, full: bool) -> StateResult<()>

Execute VACUUM with options

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pub async fn apply_retention_policy(&self) -> StateResult<usize>

Apply retention policy - delete old entries

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pub async fn archive_old_data( &self, archive_table: &str, age_threshold: Duration, ) -> StateResult<usize>

Archive old data to a separate table

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pub async fn get_table_statistics(&self) -> StateResult<TableStatistics>

Get comprehensive table statistics

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pub async fn check_replication_status(&self) -> StateResult<ReplicationStatus>

Check replication status

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pub async fn checkpoint(&self) -> StateResult<()>

Trigger a manual checkpoint

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pub fn get_stats(&self) -> PostgresStatsSnapshot

Get current statistics snapshot

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pub fn get_pool_stats(&self) -> PoolStatistics

Get pool statistics

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pub async fn health_check(&self) -> StateResult<bool>

Health check

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pub async fn close(&self)

Close all connections gracefully

Trait Implementations§

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impl StateBackend for EnhancedPostgresBackend

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

Retrieve a value for the given key Read more
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fn put<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, key: &'life1 [u8], value: &'life2 [u8], ) -> Pin<Box<dyn Future<Output = StateResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Store a value for the given key Read more
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fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StateResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Delete a key and its associated value Read more
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fn list_keys<'life0, 'life1, 'async_trait>( &'life0 self, prefix: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StateResult<Vec<Vec<u8>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

List all keys with the given prefix Read more
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fn clear<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = StateResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Clear all state from the backend Read more
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fn count<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = StateResult<usize>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Get the number of keys in the backend Read more
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fn contains<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = StateResult<bool>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check if a key exists Read more

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