summaryrefslogtreecommitdiff
path: root/README.md
blob: 27a689612d23793628498b6c0e0b71d138b27019 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
# Memcached

## Dependencies

* libevent, http://www.monkey.org/~provos/libevent/ (libevent-dev)

## Environment

### Linux

If using Linux, you need a kernel with epoll.  Sure, libevent will
work with normal select, but it sucks.

epoll isn't in Linux 2.4, but there's a backport at:

    http://www.xmailserver.org/linux-patches/nio-improve.html

You want the epoll-lt patch (level-triggered).

### Mac OS X

If you're using MacOS, you'll want libevent 1.1 or higher to deal with
a kqueue bug.

Also, be warned that the -k (mlockall) option to memcached might be
dangerous when using a large cache.  Just make sure the memcached machines
don't swap.  memcached does non-blocking network I/O, but not disk.  (it
should never go to disk, or you've lost the whole point of it)

## Website

* http://www.memcached.org

## Contributing

Want to contribute?  Up-to-date pointers should be at:

* http://contributing.appspot.com/memcached