Memcache vs APC for a single server site data caching

Question

I have a single server site thats pushing 200k unqiues per day, and the traffic doubles roughly every 40 days (for the last 5 months anyway).

I pretty much only plan to

Answer 1

in my case apc is 59 times faster than memcache

connect('127.0.0.1',11211);
$mem->replace('testin','something');
$i=0;
$time=time()+microtime();
apc_store ( 'testin','something');
$num=1000000;
while($i<$num){
 $mem->get('testin');
$i++;
}
echo "memcache took: ",time()+microtime()-$time," for 1 million gets","\n";
$time=time()+microtime();
$i=0;
print_r(apc_fetch('testin'));
while($i<$num) {
apc_fetch('testin');
$i++;
}
echo "apc took: ",time()+microtime()-$time,"for 1 million gets \n";

here is the output

memcache took: 37.657398939133 for 1 million gets
somethingapc took: 0.64599800109863for 1 million gets