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Bob Halley 1999-02-19 01:49:31 +00:00
parent 3bbe4751ff
commit 50a266dd24
1 changed files with 4 additions and 5 deletions
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doc/design/database
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@ -18,11 +18,10 @@ updated by IXFR or AXFR. AXFR provides the entire contents of the new
zone version, and replaces the entire contents of the database. IXFR
and Dynamic Update, although completely different protocols, have the
same basic database requirements. They are differential update
protocols, e.g. "add this record to the records at name 'foo'". They
are transactional, and must either succeed or fail completely.
Changes must not become visible to clients until the transaction has
committed. The differential nature of these updates requires
transaction serialization.
protocols, e.g. "add this record to the records at name 'foo'". The
updates are also atomic, i.e. they must either succeed or fail.
Changes must not become visible to clients until the update has
committed. In short, zone updates are transactional.
Cache updates are done by the server in the ordinary course of
handling client requests. Unlike zone updates, cache updates do not