#cache

Diagnose stale availability and expired offers across freshness, cache, token and revalidation layers between search and booking.

Design TTL, event invalidation, stale-while-revalidate and live-reprice boundaries for hotel and flight pricing.

Compare push, pull and hybrid distribution models across freshness, latency, rate limits, caching, reconciliation and operational ownership.

Diagnose stale hotel offers and delayed feeds using freshness timestamps, ingestion lag, cache state and invalidation evidence.

Design travel-metasearch caching with realistic search load, adaptive TTLs, selective live rechecks, stale-price risk, observability and production trade-offs.

Manage hotel-metasearch price accuracy with mismatch taxonomy, source-versus-landing validation, cache age, taxes/fees, offer comparability, KPIs and root-cause playbooks.

Understand the difference between live and indicative travel prices, including caching, discovery and booking-intent use cases.