Patent attributes
The disclosure herein describes processing deletion requests using sequencing numbers with change feed updates. When a deletion occurs on the source data store, a deletion notification is created in a change feed on the source server. The deletion notification includes a set of deletion record IDs identifying a set of records to be deleted, a tombstone sequence number (TSN) identifying a sequence of the deletion notification within a set of deletion notifications and/or a deletion sequence number (DSN). The DSN is incremented by one each time a new deletion notification is created. A deletion notification can represent deletion of a single record or a set of records. Each deletion notification is assigned a time-to-live (TTL) value. The deletion notification is deleted at expiration of the TTL. The TSN and the DSN entries are used to determine whether any deletion updates have been missed to prevent silent failures.
