Module manager 

Segment Manager

Manages the lifecycle of unified segments: creation, sealing, consolidation, and archival. Coordinates writes to growing segments and queries across all segments.

Responsibilities

• Route writes to the active growing segment
• Auto-seal segments when thresholds are met
• Coordinate queries across multiple segments
• Paced consolidation of sealed segments (ADR 0073 §5)
• Archive old segments to cold storage

Structs

ConsolidationStats

Consolidation counters for one collection (ADR 0073 §5).

ManagerConfig

Configuration for the segment manager

ManagerStats

Manager statistics

PagedEntityCursor

Frozen base/overlay cursor for a lazy query source. The source generation remains pinned through the owned page cursor, not a manager topology lock.

SegmentManager

Segment manager for a collection

SegmentScanStats

Enums

LifecycleEvent

Lifecycle events for monitoring

Constants

CONSOLIDATION_ENTITIES_PER_TICK

Entities copied into the merged segment per maintenance tick.

CONSOLIDATION_FRAGMENTATION_RATIO

Fraction of a collection’s sealed bytes that consolidation would return to the budget (dead entity payloads plus the tombstone sets that bury them) before consolidation is worth its cost. See CONSOLIDATION_TOMBSTONE_RATIO on tunability.

CONSOLIDATION_TOMBSTONE_RATIO

Fraction of a collection’s sealed entities that must be tombstoned before consolidation is worth its cost.