Apps/AITC: Difference between revisions

Apps/AITC (view source)

235 bytes removed , 15 March 2012

668

edits

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   {app_document}
-'''NOTE''': consider adding detection of stale version, e.g. if two receipts uploaded at same time.
+Optionally, the header <code>X-If-Unmodified-Since</code>, a millisecond timestamp, can be used to prevent conflicting updates. If there's a conflict, a 412 error is returned.
-If we use ETags then you'd use <code>If-Match: "etag"</code> in the case of updating a record, and <code>If-None-Match: *</code> in the case of adding a new record.  (With <code>Last-Modified</code> there does not appear to be a way to add a new record while asserting that an existing record does not exist.)
 This could do basic validation of the app document.