Revalidating Cache Entries
msiebler 2700005RPQ Visits (9017)
DataPower caches will re-validate an expired cache entry before returning the data. This usually consists of an HTTP(S) HEAD request to the origin server. While debugging a client's issue I found an interesting wrinkle about these requests:
If for some reason your HTTP server needs some other custom header, you will need to proxy the head request through an XMl FW.