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Currently I have 2 small servers in an memcached cluster. We are approaching out limits with them and need to grow. What are the pros/cons or going adding another small instance compared with having 2 medium size instances?

ckliborn
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    Facebook's Engineering blog talked about some of the issues they faced with scaling Memcahced: https://www.facebook.com/note.php?note_id=39391378919. Also, when you upgrade you should make sure that you can handle the normal load even if you were to lose a server. This probably means that adding a single small instance would not be the way to go, although two more small instances would work. – cmorse Dec 11 '11 at 08:25
  • Would you please post this as an answer – ckliborn Dec 19 '11 at 00:07

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Facebook's Engineering blog talked about some of the issues they faced with scaling Memcahced: http://facebook.com/note.php?note_id=39391378919. Also, when you upgrade you should make sure that you can handle the normal load even if you were to lose a server. This probably means that adding a single small instance would not be the way to go, although two more small instances would work.

cmorse
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