+Proxy doesn't do well, if preferredRecordSyntax is not set.
+
+Per database config.
+
Control the various optimizations with config..
Live status (via search, present).
Possible threading.
-Throw proper diagnostic for bad schema (Z39.50/SRW).
-
-Deal with Z39.50 options properly.
-
Deal with Z39.50 messages sizes properly.
-For SRW/SRU, set schema for each returned record.
+Character set conversion for SRW queries.
+
+Throw proper CQL conversion error.
-Fork to ensure that crashes are catched.
+Honor XPath.