hydra-db/hydradb

Health v2 · maintenance only

Flags: no_releases young

Adoption not part of the score

1312 stars · 586 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

HydraDB is an object-store-native distributed graph database written in Rust, using S3-compatible storage as the durable source of truth with disaggregated compute (data nodes and indexers). It supports OpenCypher queries, GraphBLAS traversal, Neo4j-compatible Bolt connectivity, and an HTTPS query API, and is positioned as a context/memory substrate for AI agents.

Use cases

• run a graph database on S3-compatible object storage
• query graphs with OpenCypher using Neo4j drivers
• build agent memory for AI applications
• store and query knowledge graphs and ontologies
• scale graph compute independently from storage
• replace a stack of vector db, graph db, and cache with one system
• self-host a distributed graph database in Rust

When to choose

• you want durable graph storage on cheap object storage with disaggregated compute
• you need Neo4j Bolt compatibility without running Neo4j
• you are building AI agent memory, ontologies, or context graphs
• you want independent scaling of query nodes and indexers

When to avoid

• you need a small embedded graph library in-process
• you require a permissive license (AGPL-3.0)
• you need mature, battle-tested Neo4j feature parity
• you lack S3-compatible object storage infrastructure

Facets

service · maturity active

database search-engine auth authorization monitoring tracing api-framework databases graph-processing artificial-intelligence large-language-models self-hosted microservices rust self-hosted cloud graph-database opencypher object-storage s3 bolt-protocol neo4j-compatible graphblas slatedb agent-memory context-graph disaggregated-storage knowledge-graph ai-agents docker linux

Member repositories

For agents

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