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DashBoard/openspec/changes/archive/2026-02-07-dashboard-vite-root-refactor/specs/layered-route-cache/spec.md
beabigegg b56e80381b chore: reinitialize project with vite architecture
2026-02-08 08:30:48 +08:00

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ADDED Requirements

Requirement: Route Cache SHALL Use Layered Storage

The route cache SHALL use L1 in-memory TTL cache and L2 Redis JSON cache when Redis is available.

Scenario: L1 cache hit

  • WHEN a cached key exists in L1 and is unexpired
  • THEN the API response SHALL be returned from memory without querying Redis

Scenario: L2 fallback

  • WHEN a cached key is missing in L1 but exists in Redis
  • THEN the value SHALL be returned and warmed into L1

Requirement: Cache SHALL Degrade Gracefully Without Redis

The route cache SHALL remain functional with L1 cache when Redis is unavailable.

Scenario: Redis unavailable at startup

  • WHEN Redis health check fails during app initialization
  • THEN route cache operations SHALL continue using L1 cache without application failure