Per Jessen wrote:
mike wrote:
Check out persistency in LVS for instance:
http://www.linuxvirtualserver.org/docs/persistence.html
i know persistence handling is an option in LVS, but i haven't seen
the need to use it. i use LVS right now without even bothering with
any of that.
Because you've chosen another option - memcached presumably - which is
more expensive over all. (IMHO).
Based on what? I'm currently looking at replacing a file-based cache
with memcached and I'm interested in all justified opinions.
besides, if you are sticking a user on the same server, what happens
when that server dies?
On the next request, LVS will know not to try that server, and the user
will move to another one. Obviously the session-context will die, but
is that really a big deal? How often does one of your servers die?
Sure, if you've got 10,000 in a cluster, you'll have fans and harddisks
pop every so often, but I have my doubts about memcached scaling to
that level (please correct me if I'm wrong here, I have _no_ experience
with memcached).
Facebook. Digg. LiveJournal. That enough scalability proof for ya? If
not there are plenty more where those came from.
-Stut
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