Constant DEFAULT_TX_MANAGER_CHANNEL_MEMORY_LIMIT_BYTES 

pub const DEFAULT_TX_MANAGER_CHANNEL_MEMORY_LIMIT_BYTES: usize = _ /* 1_073_741_824usize */;

Default memory limit (in bytes) for the channel between NetworkManager and TransactionsManager.

Caps the total in-flight bytes of NetworkTransactionEvents buffered between the two tasks. When the budget is exhausted, new events are dropped (see metric total_dropped_tx_events_at_full_capacity).