tokyo-tyrant in memory database like redis or can it grow larger then memory and retrieve from harddrive

Tokyo-tyran开发者_如何转开发t in memory database like redis(allthough redis has VM?) or can it grow larger then memory and retrieve from harddrive. If so how does it achieve that?

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Tokyo Tyrant is just a network interface to Tokyo Cabinet, not an actual database server. Tokyo Cabinet has support for both in-memory and on-file storages. When you start Tokyo Tyrant's ttserver the database name you specify is the type of storage that will be used. For instance, if you start up ttserver with:

ttserver "*" -- in-memory hash
ttserver "+" -- in-memory tree
ttserver /var/ttserver/casket.tch -- on-disk hash
ttserver /var/ttserver/casket.tcb -- on-disk b-tree
ttserver /var/ttserver/casket.tct -- on-disk fixed-length