CoordiNode

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CoordiNode Roadmap ​

Public roadmap in Now / Next / Later format.

For feature requests and bug reports, use GitHub Issues.

Now (v0.3-alpha — current release) ​

These features are implemented, tested, and available today.

Query Engine

  • OpenCypher read + write (MATCH, CREATE, MERGE, DELETE, SET, REMOVE, WITH, UNWIND, OPTIONAL MATCH)
  • Variable-length path queries (*1..N), shortest path
  • Aggregation (count, sum, avg, min, max, collect, percentile)
  • MVCC transactions with Snapshot Isolation and optimistic conflict detection
  • Time-travel queries (AS OF TIMESTAMP, 7-day retention)
  • EXPLAIN with cost estimation

Vector Search

  • HNSW index up to 65,536 dimensions
  • SQ8 scalar quantization (4x memory reduction)
  • Distance metrics: cosine, L2, dot product, L1
  • Vector search on edges (not just nodes)
  • Hybrid graph traversal + vector filter in a single query

Full-Text Search

  • BM25 scoring with fuzzy, phrase, and wildcard queries
  • 23+ built-in languages (Snowball stemmers)
  • CJK support (Chinese, Japanese, Korean) via feature flags
  • Per-field analyzer configuration

Spatial

  • point({latitude, longitude}) constructor
  • point.distance() with Haversine formula
  • Spatial predicates in WHERE clauses

Document Properties

  • Nested DOCUMENT type (arbitrary JSON/MessagePack depth)
  • Dot-notation property access (n.config.network.ssid)
  • Three schema modes: STRICT, VALIDATED, FLEXIBLE

Indexes

  • B-tree: single-field, compound, unique, partial, sparse
  • TTL index with automatic background expiration
  • Online index build (zero-downtime)

Security

  • Searchable symmetric encryption (AES-256-GCM + HMAC-SHA256)
  • Equality search on encrypted fields

Operations

  • Built-in query advisor: EXPLAIN SUGGEST with 5 detectors + N+1 pattern detection
  • Prometheus metrics, structured JSON logging, OTLP tracing
  • Backup/restore (JSON, Cypher, binary formats)
  • Docker image, embedded library mode (coordinode-embed)

Document Operations

  • Path-targeted partial updates (SET n.config.ssid = "home" without read-modify-write)
  • Array operators (push, pull, addToSet, increment) as merge operands

API

  • gRPC on port 7080 (native, all services)
  • REST/JSON via gRPC-to-REST transcoding (port 7081, via structured-proxy)
  • Operational HTTP on port 7084 (/metrics, /health, /ready)
  • Parameter binding in gRPC/REST queries

Next ​

Features in active development or planned for the next few releases. When a feature is completed, the corresponding documentation will be updated.

GraphQL API

  • GraphQL with auto-generated schema from graph model (SDL generation implemented, server wiring in progress)
    • Closes: COMPATIBILITY.md "GraphQL → Planned"

WebSocket Subscriptions

  • Live query subscriptions via WebSocket (port 7083)
    • Closes: COMPATIBILITY.md "WebSocket → Planned"

Document Operations

  • Graph-document transformations (promote nested documents to graph nodes and back)

Schema & Index DDL

  • CREATE LABEL ... (typed properties) and CREATE EDGE_TYPE Cypher DDL
    • Closes: CYPHER_EXTENSIONS.md "Schema (planned DDL)" note
  • CREATE VECTOR INDEX ... OPTIONS {m, ef_construction} Cypher DDL
    • Closes: CYPHER_EXTENSIONS.md "Vector Index (planned DDL)" note

Replication

  • 3-node Raft clustering with automatic failover (free in CE) — consensus implemented, server binary wiring in progress
    • Closes: COMPATIBILITY.md "Free 3-node HA clustering ... server binary wiring in progress"
  • Follower reads with staleness tracking
  • Causal consistency sessions

Encrypted Search DDL

  • CREATE ENCRYPTED INDEX and encrypted_match() Cypher syntax (crypto primitives implemented, query engine wiring planned)
    • Closes: CYPHER_EXTENSIONS.md "Encrypted Search (SSE)" note, COMPATIBILITY.md "programmatic API; Cypher DDL planned"

Later ​

Long-term vision. Timeline depends on community interest and sponsorship.

Neo4j Compatibility

  • Bolt protocol (v4.3–v5.8) — existing Neo4j drivers connect without code changes
  • 130+ OpenCypher functions (string, math, temporal, list, map)
  • Neo4j procedures (db.*, dbms.*)
  • LOAD CSV, neo4j-admin import compatibility
  • Constraints (node key, existence, property type)

Horizontal Scaling (Enterprise Edition)

  • Multi-group Raft with hash/range sharding
  • CRUSH-like placement with failure domain awareness
  • Scatter-gather query engine with predicate push-down
  • Cross-shard 2PC transactions with HLC timestamps
  • Erasure coding for storage efficiency

Advanced Features

  • CDC (Change Data Capture) to NATS, Kafka, webhooks
  • Materialized graph views with incremental refresh
  • Graph analytics (PageRank, community detection, centrality)
  • Visual graph explorer (Vue 3 + WebGL)
  • Kubernetes operator with rolling upgrades
  • Multi-tenancy with mClock QoS per tenant

Contributing ​

We welcome contributions at any level — from bug reports to feature implementations.

See CONTRIBUTING.md for guidelines.