# Stale Cache The **Stale Cache** feature for Dynamic Content Acceleration operates the same way as in Static Content Delivery.\ It allows CDN edge servers to deliver the last cached version of an object when the origin fails to respond or returns specific error codes. You can define which origin conditions—such as timeouts, invalid headers, or 5xx errors—trigger stale delivery. This improves availability for dynamic workloads during short-term origin instability. For configuration details, supported triggers, and examples, refer to the main documentation:\ **Learn more in the** [**Stale Cache documentation**](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/stale-cache.md)**.** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://clients.medianova.com/products/performance-cdn/dynamic-content-acceleration/advanced-configuration/caching/stale-cache.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.