![](bullet.gif) | Consistency management with HTTP-based invalidation messages and declarative expiration policies. |
![](bullet.gif) | Performance assurance heuristics that intelligently serve stale content during traffic spikes, guaranteeing Web site performance. |
![](bullet.gif) | Multi-version URLs that display different content, such as different prices, to different groups of users. |
![](bullet.gif) | Simple in-cache personalization, for customizing cached pages with user-specific attributes like welcome greetings.
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![](bullet.gif) | Automatic content compression for faster delivery to browsers and reduced bandwidth requirements for content providers.
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