Agentic AI Reference Architecture

Knowledge & Data · Data store

Subgraph Cache

Data storeKnowledge & DataKnowledge & Dataarc:SubgraphCache

A cache holding frequently accessed subgraph query results so repeated traversals are not re-executed.

Responsibility. Replays results of frequently accessed subgraph queries.

Also known as: Cypher query result cache, Graph Query Cache

cachescachesHybrid Retriever: cachesHybrid RetrieverGraph Retriever: cachesGraph Retriever
Direct neighbourhood (hover for relationship types)

Relationships

caches dependency

Classification

Patterns
Result cachingQuery result caching
Technologies
Redis
Quality attributes
Performance efficiency (ISO/IEC 25010)
Risks mitigated
Accumulated hybrid retrieval latencyGraph store overload from many replicas

Sources

  1. Ch1.7B: T. Nguyen, "Relational Reasoning with Knowledge Graphs - Hybrid RAG+KG Integration," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.7B. ISBN: 9798244538229.
  2. Ch1.8: T. Nguyen, "Scalability and Production Deployment," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.8. ISBN: 9798244538229.
  3. Ch5.7: T. Nguyen, "Episodic Memory," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 5.7. ISBN: 9798244538229.
  4. Ch5.8: T. Nguyen, "Semantic Memory," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 5.8. ISBN: 9798244538229.