pub const SOLANA_DEFAULT_TX_VALID_TIMESPAN: i64 = _; // 1_800_000i64Expand description
Default transaction valid timespan for Solana when no explicit valid_until is provided (in milliseconds) Set to 30 minutes to balance between:
- Preventing infinite resubmission loops
- Allowing reasonable time for transaction processing during network congestion
- Aligning with Solana’s fast finality expectations