Feature Status

Durable segment storage

Available

Keep the entire data directory on persistent storage; see Back up and restore a standalone database.

WAL-backed writes and recovery

Available

Shared durability path for fragment storage.

KV single and bulk APIs

Available

gRPC and transaction surfaces exist.

Graph blocks and graph scans

Available

Includes bulk graph blocks, GraphScan, BulkNeighbors, and compact neighbor response.

Vector HNSW search

Available

Includes direct, packed, and batch packed search.

Cypher MATCH/WHERE/RETURN

Available

Practical parser and execution coverage.

Cypher materialized path aliases

Restricted

Supported for fixed and bounded named path shapes such as MATCH p = …​; unsafe or unbounded path materialization rejects.

Cypher ORDER BY/SKIP/LIMIT

Available

Parser coverage and execution support for covered plan shapes.

Cypher CALL vector.knn

Available

Supports literal and request-parameter query vectors. The default database can expand vector candidates through one directed graph relationship.

Cypher CALL kv.get

Available

Reads the public default KV namespace by a bound node UID in the admitted vector/graph query. Numeric internal resources require system context.

Cypher SEARCH

Available

Lowers to label-constrained node scan.

Cypher RANK rerank_v3

Available

Sorts/caps by score binding; supports top_k and score.

Cypher pipelines, collections and unions

Restricted

WITH, UNWIND, top-level aggregation, collect, aggregate/row DISTINCT, standalone expressions, UNION and UNION ALL; restrictions are listed in Cypher And openCypher Compatibility.

Cypher OPTIONAL MATCH and null logic

Restricted

General left-join lowering after a preceding row stream, nullable bindings and three-valued predicates; a leading optional clause is rejected.

Cypher subqueries and comprehensions

Restricted

Read-only CALL/EXISTS, list and fixed-pattern comprehensions, quantified predicates, and bounded COUNT { …​ } / COLLECT { …​ } expressions.

Cypher writes and MERGE

Restricted

Default-off governed operators for supported create/property-update/node-delete and deterministic node/single-hop merge shapes. Legacy write fast paths have a separate gate boundary. Use one label per CREATE node; see Cypher Writes And Schema.

Cypher schema and plan inspection

Restricted

EXPLAIN, executing PROFILE, durable database-wide physical indexes, existing-data validation, and enforced uniqueness and property-existence constraints. Catalog mutations default off.

Experimental optimizer and weighted compositions

Experimental

Shadow recommendations default off. The existing dispatcher continues serving queries.

EMBED(…​)

Unavailable

Concept syntax only. Generate embeddings outside the query today.

FULLTEXT MATCH

Unavailable

Concept syntax only.

SPARQL

Restricted

Read queries include optional patterns, aggregation, property paths, and named graphs; see SPARQL.

SPARQL weighted-path SERVICE

Restricted

Dijkstra, A*, Yen, Bellman-Ford, and APSP service lowering share the weighted-path operator where supported.

Graph analytics procedures

Available

GDS-like stream procedures for PageRank, WCC, degree, closeness, betweenness, and weighted paths.

Lakehouse graph views

Restricted

Parquet-backed reviewed graph views with unified query-fabric evidence. Source mutation remains out of scope.

Semantic MCP

Available

Profile-backed semantic_reason, semantic_compile, semantic_explain, and semantic_execute plus XML prompt workflows.

Geospatial indexing (SpaceKey)

Available

Append-only observations, indexed position/time/recurring-window/entity lookups, durable retry receipts over the ACID ordered KV store, multimodal transactions, and HA transaction replication. See Geospatial and spatiotemporal indexing.

Transactions

Available

Begin, query, KV/vector/graph/geospatial writes, commit, rollback.

RBAC/ABAC

Available

Requires a multi-tenant package with authentication enabled.

Identity service

Available

Available with server multi-tenant feature.

HA sync-quorum replication

Restricted

Available for covered write paths; crash/partition gates remain.

Distributed query execution

Restricted

Covered shapes include bulk KV, packed/streaming vector search, GraphScan, and graph-scan-shaped Cypher/SPARQL reads.

OWL reasoner

Restricted

Ontology import can materialize supported inferred facts; verify required inferences with representative inputs.

Perfetto traces

Available

Benchmark and admin trace paths emit Perfetto-compatible JSON.