A mechanism for caching dynamically generated content is disclosed, wherein initially, a server receives a request from a client for a set of dynamically generated content. In response to the request, the server accesses a cached version of the requested content, which was generated previously, and determines whether the cached version is still valid. If the cached version is no longer valid (e.g. is out of date), then the requested content is dynamically generated and stored in a cache, replacing the outdated version. In addition, the freshly generated content is provided to the client in response to the request. The client is thus provided with the most current information. On the other hand, if the cached version is still valid, then the server foregoes generating the content. Instead, it provides the cached version of the content to the client. By doing so, the server reduces the time required to return the content to the client, and significantly improves system performance.