1. It can be _optional_ functionality. So people can use it at their own risk. 2. > risk of memcached performing poorly by having more connections open longer. Why? AIO allows to has thousands connections open. I'm sure, it must be more efficient than repeats.
On 24 мар, 15:00, Josef Finsel <[email protected]> wrote: > memcached works so well because it does one thing very efficiently. > Attempting to add functionality that should go in the client increases the > risk of memcached performing poorly by having more connections open longer. > > If this is to be implemented, it should be implemented in the client where > it can open a connection, not find data, wait a millisecond and try again. > > Just my .02. > > 2009/3/24 gf <[email protected]> > > > > > > > On 24 мар, 07:39, Dustin <[email protected]> wrote: > > > On Mar 22, 4:20 am, gf <[email protected]> wrote: > > > > > Hello. It would be great to add new "wait timeout" argument to the get > > > > () method. If it is defined and the key doesn't exists a the moment, > > > > client should wait untill the key will be added or untill the timeout > > > > will be reached (client gets false in this case) and get feedback as > > > > soon as possible. > > > > It can be used at many cases. > > > > ...however, none of these cases are applicable to a cache. The > > > cache has data or it doesn't. Building a blocking queue inspired by > > > the memcached protocol is one thing, but support for such things > > > *within* memcached doesn't make all that much sense. > > Why not? > > The cache could has no data, but the data will be added very very soon > > (0.01 ms), so cycle repeats is not a good solution.... > > I think, the blocking operation (not in queues) is very usable in > > cache implementations because several threads can be update... > > Memcached is more than the storage for "a data from some queries", > > it's a great platform for distributed solutions. > > -- > "If you see a whole thing - it seems that it's always beautiful. Planets, > lives... But up close a world's all dirt and rocks. And day to day, life's a > hard job, you get tired, you lose the pattern." > Ursula K. Le Guin > > http://www.finsel.com/words,-words,-words.aspx(My blog) > -http://www.finsel.com/photo-gallery.aspx(My Photogallery) > -http://www.reluctantdba.com/dbas-and-programmers/blog.aspx(My Professional > Blog)
