1449156 - Bugzilla::Memcached should use smaller timeouts and ping servers at instantiation time

Status: VERIFIED FIXED

(bugzilla.mozilla.org :: General, enhancement)

Description

[Dylan Hardison [:dylan] (he/him)]

Cache::Memcached::Fast has the following features:

connect_timeout, default 0.7 seconds, the time that it takes to figure out a connection isn't working. (usually not encountered, as you get a NAK immediately, but not in AWS)

io_timeout, default 1 second, the time time that it takes before an io operation (get/set) times out.

failure_timeout, default 60 (but not used): the time to wait between failures

max_failures, default 0 (off): how many failures before we stop trying to connect?

I think 0.2 is a good value for the first two, and I really like the second one!
I think after 1 failure we should wait 60 seconds before hitting memcached again.

Comment 1

[Dylan Hardison [:dylan] (he/him)]

Attachment: PR

Comment 2

[Dylan Hardison [:dylan] (he/him)]

Get/Set operations when memcached is not present before this fix:
It can do 3 per second.

Get/Set operations when memcached is not present after this fix:
It can do 376970 sets per second