Central coordinator of Bedrock's transaction commit process.

The Commit Proxy batches transactions from multiple clients for efficient processing, orchestrates conflict resolution through Resolvers, and ensures durable persistence across all required log servers. It transforms individual transaction requests into efficiently processed batches while maintaining strict consistency guarantees.

Transaction batching creates a fundamental trade-off between latency and throughput. The Commit Proxy manages this through configurable size and time limits that balance responsiveness against processing efficiency. This batching strategy enables intra-batch conflict detection and amortizes the fixed costs of conflict resolution and logging across multiple transactions while preserving the arrival order of transactions within each batch.

The component uses a fail-fast recovery model where unrecoverable errors trigger process exit and Director-coordinated recovery. Commit Proxies start in locked mode and require explicit unlocking through recover_from/3 before accepting transaction commits, ensuring proper coordination during cluster recovery scenarios.