Variable directiveConst

Type Declaration

• noCache: CacheDirective

  no-cache — Response may be stored but must be revalidated with the origin before reuse. Useful when content changes frequently but you still want conditional GET support (ETags / Last-Modified).

• noCacheNoStore: CacheDirective

  no-cache, no-store, must-revalidate — Belt-and-suspenders: disables storage and forces revalidation. Maximally prevents caching across all cache layers including legacy HTTP/1.0 proxies.

• noStore: CacheDirective

  no-store — Response must never be stored. Bypasses all caches (browser, CDN, proxy). Use for sensitive data (user dashboards, auth responses, banking pages).

• private: (maxAge: number) => CacheDirective

  private, max-age=<seconds> — Cacheable only by the end-user's browser, not by shared caches (CDNs, proxies). Use for personalised content that must not be stored on shared infrastructure.

• public: (maxAge: number, staleWhileRevalidate?: number) => CacheDirective

  public, max-age=<seconds> — Cacheable by any cache (CDN, proxy, browser). Optionally add stale-while-revalidate to serve stale content while revalidating in the background.