1. OutputCacheAttribute
By Jax

2. Properties
• string CacheProfile
• int Duration
• bool NoStore
• string SqlDependency
• string VaryByContentEncoding // Accept-Encoding
• string VaryByCustom // override GetVaryByCustomString in Global.asax.cs
• string VaryByHeader // User-Agent Accept-Charset Accept-Language
• string VaryByParam
• OutputCacheLocation Location

3. Using
[OutputCache(Duration = 3600, VaryByParam = "culture")]
public ActionResult Index(string culture = "zh-TW")
{