EntityFold

Engineering the data systems behind real-time, production AI. Exploring point-in-time correctness, feature freshness economics, and sub-millisecond serving.

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September 28, 2026•11 min read

When Does Real-Time Actually Matter for AI?

A practical framework for choosing feature freshness in machine learning and AI systems.

Machine Learning SystemsFeature FreshnessStreaming ArchitectureFeature EngineeringSystem EconomicsAI Agents