Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
- embedded-database
- java
- kotlin
- key-value
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Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.
Nornicdb is a distributed low-latency, Graph+Vector, Temporal MVCC with all sub-ms HNSW search, graph traversal, and writes. Using Neo4j Bolt/Cypher and qdrant's gRPC means you can switch with no changes while adding intelligent features like schemas, managed embeddings, reranking+llm, GPU accel, Auto-TLP, Policy-based Memory Decay, and MCP server.
Simplified snapshots and restoration for ActiveRecord models and associations with a transparent white-box implementation