Any way to force Django to commit a write so another process can read the correct data from DB?

My website uses a combination of Django + Java apps to function. For this particular problem, a record is deleted from the DB via a TastyPie resource DELETE operation. A Django signal post_delete handleris invoked, which submits a DELETE request to Jetty running in the Java app. The Java app then performs a query using Hibernate.

What appears to be happening is that Django thinks the record was deleted:

DynamicVolume.objects.filter(user=instance.user).count()

Returns ZERO.

However, the Java app thinks the record still exists unless I make it sleep for several seconds before asking Hibernate to query the DB.

I've tried forcing Hibernate to clear its cache with no success. Is there a way to force Django to commit the deletion (flush the cache)?

Thanks

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