Memcached seems to be preinstalled with Xcode on OS X, according to Apple's documentation. To make sure I'm not hallucinating, I checked Apple's developer tools documentation. Yes, memcached is supported and documented by Apple:
Apparently, memcached is installed with Xcode since at least 10.6 onwards.
The reason I'm asking this is that on the Web and on SO there are lots people asking how to install memcached on OS X but curiously no one seems to mention that the easiest way to do so is to simply install Xcode via the AppStore (or using a DMG). All the answers given involves using homebrew or some other complicated way to install memcached from source.
Is there any compelling reason why the Apple shipped memcached is not good enough? I don't see any advantages of compiling and installing memcached from source since there's an Apple supported version.