dustin at spy.net
Wed Sep 5 05:22:23 UTC 2007
On Sep 4, 2007, at 21:35, hirose31 at t3.rim.or.jp wrote:
> - asynchronous repliacation. (like MySQL)
> - single master, single slave.
> - slave connect to master.
> - sequence:
> - client requests SET command to master
> - push key to queue
> - pop key from queue (asynchronous)
> - fetch value for key
> - send key/value to slave by memcached protocol
> - when new slave connect to master, master copy whole data to slave.
Doesn't this mean that you will sometimes write a value to a cache,
and then later read a value back and get something other than the
latest value you wrote? Getting known stale values seems worse than
not getting something from the cache.
More information about the memcached