Quick Answer
Response caching: [ResponseCache(Duration = 60)] sets Cache-Control: public, max-age=60. UseResponseCaching() middleware caches on server. For user-specific responses: [ResponseCache(Location = ResponseCacheLocation.Client)] (client-side only). Vary by query string: VaryByQueryKeys = new[]{"q"}. CDN caches public API responses at the edge. Use ETags for conditional requests to reduce bandwidth.
Answer
Effective caching improves performance and reduces database load:
Use the [ResponseCache] attribute for client caching.
Use server-side caching middleware for heavy endpoints.
Leverage distributed caches like Redis or Memcached for load-balanced apps.
Apply cache invalidation strategies to prevent stale data.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
