Module maintain 

Transaction pool maintenance tasks.

Structs

KeyExpiryTracker 🔒

Tracks keychain key expiry timestamps for eviction.

KeyId 🔒

Composite key identifying a keychain key: (account, key_id).

PendingStalenessTracker 🔒

Tracks pending transactions across snapshots to detect stale transactions.

TempoPoolState 🔒

Tracking state for pool maintenance operations.

TempoPoolUpdates

Aggregated block-level invalidation events for the transaction pool.

Constants

DEFAULT_PENDING_STALENESS_INTERVAL 🔒

Default interval for pending transaction staleness checks (30 minutes). Transactions that remain pending across two consecutive snapshots will be evicted.

EVICTION_BUFFER_SECS 🔒

Evict transactions this many seconds before they expire to reduce propagation of near-expiry transactions that are likely to fail validation on peers.

Functions

evict_underpriced_transactions_for_t1 🔒

Removes transactions with max_fee_per_gas below the T1 base fee from the pool.

handle_reorg

Handles a reorg event by identifying orphaned AA 2D transactions from the old chain that are not in the new chain.

maintain_tempo_pool

Unified maintenance task for the Tempo transaction pool.