Dear list,
I have a memcached cluster with 20+ servers that I need to access both from
php and clojure (java). The problem is that I can't figure out how to set
the hashing and locator strategies consistently in php and java.
On the php side we use crc32+consistent hashing.
On the java side, I've tried both spymemcached and xmemcached. By trial and
error I found that in both cases I can get values that were set with php,
provided that I find a good combination of a hashing/locator algorithm
("consistent", "php", "ketama", ...) *and* the order in which I specify
servers.
For instance, with xmemcached, these might work:
(with-client (memcached "server02:11211 server04:11211 server03:11211"
:hash :php)
(get "d0b6e29b5b377ed11f84f73f50655a49"))
(with-client (memcached "server04:11211 server02:11211 server03:11211"
:hash :standard)
(get "d0b6e29b5b377ed11f84f73f50655a49"))
But these not:
(with-client (memcached "server02:11211 server04:11211 server03:11211"
:hash :standard)
(get "d0b6e29b5b377ed11f84f73f50655a49"))
(with-client (memcached "server04:11211 server02:11211 server03:11211"
:hash :php)
(get "d0b6e29b5b377ed11f84f73f50655a49"))
The problem is that I don't know how to determine the good
combination/order of servers automatically. Since I am dealing with 20+
servers, trying all possibilities is not an option. Any ideas?
Thanks!
Joachim.
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