Not quite. CouchDB doesn't keep anything in memory by itself -- it lets the OS handle filesystem caching, and everything goes to the on-disk indexes. So it would be unspeakably slow for most of memcached's use cases.
Interestingly, Couchbase, which is what we're using at Esplorio these days, is a fusion of memcached and CouchDB...
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Interestingly, Couchbase, which is what we're using at Esplorio these days, is a fusion of memcached and CouchDB...