Tools & Integration · Data artifact

Event-Based Cache Invalidation Policy

Data artifactTools & IntegrationOrchestration & Toolsarc:EventBasedCacheInvalidationPolicy

A cache invalidation policy that evicts cached tool results when the upstream source signals that it has published updates.

Responsibility. Evicts cached results on upstream change events.

Also known as: Event-driven invalidation

Variant of Cache Invalidation Policy abstract

When to choose. Choose when the upstream source can signal publication of updates, so freshness need not wait for a TTL.

Direct neighbourhood (hover for relationship types)

Relationships

configures structural

Cache Invalidator Ch7.3

alternative to variability

Time-Based Cache Invalidation Policy Ch7.3

Design guidance

SHOULD invalidate affected entries when the source publishes updates.

Classification

Patterns: Event-driven cache invalidation
Quality attributes: Functional suitability: correctness and validity (ISO/IEC 25010 | NIST AI RMF: valid)
Risks mitigated: Serving results superseded by a source update

Sources

Ch7.3: T. Nguyen, "NeMo Agent Toolkit Profiling," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 7.3. ISBN: 9798244538229.