Failure with libmemcached
kevin at kelphead.org
Fri Jan 25 17:32:02 UTC 2008
I have looked at a series of memcached_set, memcached_get,
memcached_delete, memcached_flush. I'm getting strange return values,
followed by a client stuck in a poll.
Everything goes quite well for a while. Then the return codes get
strange, with memcached_set returning NOT_FOUND, memcached_get returning
stored. Other strange errors, and eventually the client is stuck in a
I assume that the client and server disagree about their position. Once
they get lost, things get worse over time.
This is on a FreeBSD4.11 box, with a 1.2.4 server, and a new version of
libmemcached, pulled down yesterday. A few weeks old version also shows
this problem. What should I do? Perhaps I should should repeat the
request. Perhaps I should shut down and reopen the connection. If it
doesn't happen often, I may try this. Perhaps I should try to
understand the problem more completely.
Here are a few odd returns which I see.
Then things get stranger. memcached_get returns MEMCACHED_STORED. In
fact, it returns quite a few of them.
Eventually memcached_set returns a few MEMCACHED_SERVER_END, mingled in
with the MEMCACHED_STORED.
memcached_set returns NOT_FOUND.
memcached_get returns SERVER DELETE
memcached_set returns SERVER_END
memcached_set returns NOT_FOUND
More information about the memcached