Changes between Version 8 and Version 9 of BluePrintRegionsAndIncidents

Timestamp:

02/16/11 16:14:37 (14 years ago)

Author:

Pat Tressel

Comment:

--

BluePrintRegionsAndIncidents

@@ -91 +91 @@
 against a region and find it's not in that region, we need to record that to
 avoid redoing the test. The cache would be invalidated if the location's
-parentage or lon, lat changes.  This needs careful consideration, to handle invalidating
-the region test results if the region changes.
+parentage or lon, lat changes.  Invalidating region test results if a region's
+scope changes (e.g. its border is changed, or a group's membership changes, or
+if the hierarchy is changed) needs careful consideration to avoid expensive
+database operations. Fortunately, regions are not expected to be changed frequently.
 
 === Incident discussion ===