[beagle3]

They are only better for some workloads and not others. e.g., they are excellent for accessing data in-order, but are worse than a very simple hash table for random access:

http://preshing.com/20130107/this-hash-table-is-faster-than-...

(yes, this hash table is vulnerable to timing attacks; point is, for many workloads Judy brings in considerable complexity but is actually inferior to other solutions).

[snogglethorpe]

Just an aside, but man, that's a refreshingly readable and pleasant article...