Module segmented 

Segmented WAL: manages a directory of segment files with automatic rollover and truncation.

This is the primary WAL interface for production use. It wraps WalWriter and WalReader to provide:

• Automatic segment rollover when the active segment exceeds a target size.
• Truncation of old segments after checkpoint confirmation.
• Transparent multi-segment replay for crash recovery.
• Legacy single-file WAL migration.

Thread safety

SegmentedWal is NOT Send + Sync by itself. The WalManager in the main crate wraps it in a Mutex for thread-safe access from the Control Plane.

Structs

SegmentedWal

A segmented write-ahead log.

SegmentedWalConfig

Configuration for the segmented WAL.

Functions

replay_all_segments

Replay all records from all segments in a WAL directory, in LSN order.

replay_from_limit_dir

Paginated replay from a WAL directory: reads at most max_records from from_lsn.