Does my WordPress blog need Memcached?

Saw a blog post today. I had great success in my GAE projects using memcache and local cache, and I decided to follow the instruction to add memcache to my blog.

The plugin mentioned above is http://wordpress.org/extend/plugins/memcached/. Install was easy. But I got error "Fatal error: Cannot redeclare class wp\_object\_cache" when I was trying to activate the plugin. Oops, I forgot to define the memcached server.

I was googling for a simple memcache server, but after reading this, I decide to install extension apc rather memcache. Because this blog is small, and memcache server will be running on the same server as the http server. Extension apc is enough!

I updated the php apc extension by

pecl install apc
service php5-fpm restart

Verify it with <?php phpinfo( );?>

Then, edit /etc/php5/fpm/conf.d/apc.ini to enable it

extension=apc.so
apc.enabled=1
apc.shm_segments=1
apc.shm_size=32M

By the way, I installed php5-fpm with the following command. I don't really need to pecl install apc. I followed this post to install ZendGuardLoader and eaccelerator.

add-apt-repository ppa:brianmercer/php && apt-get update
apt-get -q -y install php5-cli php5-common php5-mysql php5-suhosin php5-gd
apt-get -q -y install php5-fpm php5-cgi php-pear php5-memcache php-apc

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