What are some of the more interesting ways you have used memcached?

Question

After implementing a memcached caching layer into my schema tools I'm wondering if there is more capability to use memcached services other than the canonical:

rec = cache.get(make_cache_key(k))
if rec: return rec
rec = dbi.execute(query_string(k))
cache.set(make_cache_key(k), rec)
return rec

usage of row caching?

Anything like JSON/XML caching of structured data? Graph data? Images?

Answer 1

Simon Willison had an interesting article a couple months ago about using memchaced for rate-limiting: Rate limiting with memcached