Skip to main content Module storage Copy item path Source edge Edge Storage Module memory_watermark Process-wide memory watermark coordinator. migration_history mvcc_visibility Unified MVCC visibility helper. stats Storage statistics helpers: HyperLogLog cardinality estimator. stats_reader Column Statistics Snapshot Reader AutoCommitBatchWindow A shared auto-commit batch window. CatalogLockDiagnostic ChangeLog Batch of schema changes for a single label CheckpointDiagnostics CheckpointStats ColumnStatsSnapshot Immutable point-in-time statistics for one property column of a vertex
tag or an edge type. EdgeColumnBatch A column-major edge batch produced by EdgeCursor::next_column_batch. FlatVertexRecord A vertex row read from the storage columns without Vertex/HashMap
boxing. GenerationBuildState Persisted tracking data for one native index generation build.
Stored alongside the index metadata so it survives crashes. GraphStorage IndexManifest The persisted routing table for one immutable index generation. IndexScanPlan Immutable physical index scan contract. IndexShard An immutable half-open ordered-key range. None represents infinity. LabelVersionHistory Version history for a single label (vertex or edge type) ManifestCatalog Publishes immutable manifests and fences reclamation with reader handles. ManifestCatalogStats ManifestHandle A cursor-owned pin that prevents reclamation of a generation’s physical files. MemoryAccounting Thread-safe accounting shared by storage components. MemoryBudget Validated memory limits for one storage instance. MemoryReservation RAII handle for temporary background memory. MemoryUsage MetricsStorage MigrationHistoryManager In-memory manager for migration history. Persisted as JSON. MigrationHistoryRecord One row of the migration_history table. PersistenceConfig PersistenceDiagnostics PredicateRange A merged value range over one column, derived from pushed scan
predicates. Used for zone-map pruning: a storage chunk whose min/max
bounds cannot overlap this range cannot contain matching rows. PropertyChange Property change event - represents a single property schema modification PropertyColumn One property column of a column-major vertex batch. PropertyGraphConfig RequiredProperty Carries resolved metadata so that scan operators and storage cursors
no longer rely on alias/name heuristics. The schema_version binds
the identity to a specific catalog generation, preventing stale reuse
after schema changes. ResourceConfig Resource and maintenance limits shared by the storage engine components. ResourceSnapshot Point-in-time resource information suitable for logs and metrics exports. ScanOptions Unified scan options that configure cursor behavior. ShardSlice One slice of every shard’s local-id space, selected by partition index. SnapshotHandle Snapshot handle for MVCC - identifies a consistent snapshot at a specific timestamp SnapshotStats StagedWriteMark Boundary of storage-staged (not yet undo-logged) writes captured at
savepoint creation. StorageError Storage layer error type StorageOperationContext Immutable context bound to one storage operation scope. StoragePropertyDef Storage-level property definition.
Combines features from both vertex and edge property definitions. StorageStats Storing statistical information SyncWrapper Decorator that wraps a StorageClient to provide automatic index synchronization. TtlPurgeEntry Physical-deletion result for one TTL schema scanned by a purge. VecEdgeCursor Edge cursor backed by a pre-materialized Vec<Edge>. VecVertexCursor Vertex cursor backed by a pre-materialized Vec<Vertex>. VertexColumnBatch A column-major vertex batch produced by VertexCursor::next_column_batch. WalMetrics WriteGateStats Cumulative gate admission statistics (acquisitions and total wait time). ChangeDetails Detailed information about schema modifications ColumnValues Raw decoded values for one property column, in column-major order. GenerationState Persistent state of a native index generation rebuild.
Written to durable storage before each phase so that crash recovery
can determine whether the partial build can be resumed or must restart. IndexPredicate Predicate understood by native index cursors. IndexRow MemoryCategory Memory ownership categories used by the storage engine. MigrationStatus Status of a migration execution. PartitionSelector PersistenceFaultPoint PurgeTarget Target schema of a StorageAdmin::purge_expiredNone passed instead means “every TTL-configured
schema in the space”. ScanPredicate A single-column comparison predicate pushed from the query layer into a
physical scan. ScanTarget Identifies what kind of scan is being performed. SchemaObjectType Type identifier for change tracking - distinguishes between vertex and edge schema changes StorageEvent Storage engine lifecycle notification. AutoCommitBatchOps Operations for running a run of auto-commit DML statements inside a shared
batch window. AutoCommitGroupOps Group-commit operations on top of an AutoCommitBatchWindowAutoCommitBatchOps; bind_auto_commit_statement
is mode-aware: bound inside a group window it reuses the shared write
timestamp and undo log, so no separate bind method is needed. CatalogStore Catalog and schema access used by query planning and DDL execution. ColumnStatsReader Reader capability for optimizer-facing column statistics snapshots. EdgeCursor A cursor that yields edges in batches. GraphStore Logical graph data access used by query execution. IndexCursor A cursor that yields index entries (row IDs or covering rows) in batches. QueryStorage Minimal combined capability required by the query crate. StorageAdmin Administrative operations: stats, maintenance, optional components. StorageAuthOps Authentication and authorization operations. StorageClient Combined storage interface with full read/write/schema/auth/admin capabilities. StorageCommitOps StorageGcOps Index GC operations. StorageMaintenance Maintenance-only capabilities used by server initialization and administration. StorageOperationContextOps Creates an immutable storage handle bound to a single operation context. StoragePersistenceOps Persistence operations for flushing, checkpointing, and compaction. StorageReader Read-only data and schema operations. StorageRecoveryOps WAL recovery operations. StorageSchemaContextOps Access to persistent schema context shared with higher-level components. StorageSchemaOps Schema/space/tag/edge-type/index DDL operations. StorageSnapshotOps Background freeze operations. StorageSyncContextOps Access to sync runtime context shared with higher-level components. StorageTtlPurgeOps Background TTL purge operations. StorageWriter Write operations for vertex and edge data. UndoTarget Target for undo operations VertexCursor A cursor that yields vertices in batches. open_edge_scan Open an edge scan cursor through a storage client. open_index_cursor Open an index scan cursor through a storage client. open_vertex_scan Open a vertex scan cursor through a storage client. GcEventSink Observer for reclaimed-entry counts, forwarded by GC managers to the
persistence coordinator which fans out StorageEvent::GcRun. StorageEventCallback Runtime observer for storage events.