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The embedded WebDAV server lets you control the cache-control http header that transmits to clients by the MIME type. This is useful for fine-tuning your website.
The configuration property is exo.webdav.cache-control.
exo.webdav.cache-control=text/*:max-age=3600;image/*:max-age=1800;*/*:no-cache;
The property expects a comma-separated list of key=pair values, where keys are a list of MIME types followed by the cache-control value to set.