Most != all :) Tokyo Tyrant and Redis are some of the fastest key-value stores and when I stated that it wasn't with them in mind. There are tons of other key-value stores that can't beat the perfomance of MySQL.
I agree that replication in Tokyo Tyrant is generally good, but MySQL's is much more mature and one can get help more easily. It should be stated that I am the author of LightCloud (a distributed db built on top of TT) and I am running big installations of both TT and MySQL, so I speak from experience.
I agree that replication in Tokyo Tyrant is generally good, but MySQL's is much more mature and one can get help more easily. It should be stated that I am the author of LightCloud (a distributed db built on top of TT) and I am running big installations of both TT and MySQL, so I speak from experience.