Replace client-side caching...
[ResponseCache(Duration = 14400, Location = ResponseCacheLocation.Any)]

...with serverside caching
private readonly IMemoryCache memoryCache;

• Caching on the home page should be broken when we add a new post or comment (includes status updates and deletes).
• Caching on the archive page should be broken when we add a new post.
• Caching on the category page should be broken when we add a new post.