Henning Westerholt writes:
In other areas we also have overlapping functionalies
with different
datastructures, like in RURI prefix rewriting: dispatcher (linked list), lcr
(hash table), cr (trie), mtree (tree?) and also drouting (trie), which was
added not that long ago.
sure there are overlaps, but before matrix module, there was no other
module that was functionally a pure subset of an existing module and
that was worse in performance.
-- juha