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Design Guarantees

What Verity promises and ensures.

Latest-Wins

Stale network results won't clobber newer state.

Coalesced

Identical in-flight requests reuse one promise.

Deterministic

The same sequence of directives + responses yields the same cache.

Isolated

Truth-state doesn't leak view concerns; view-state doesn't influence server truth.

Pluggable

Fetchers and directive sources are replaceable without touching views.

Core Principles Summary

  • Truth beats latency. Accuracy earns confidence.
  • State is owned by the data layer. Components watch state—they do not orchestrate it.
  • Determinism matters. In-flight requests are coalesced, caches have TTLs, and directives guarantee convergence.
  • Portable semantics. Whether you work in Alpine, React, Vue, or Svelte, the behaviour is consistent.