mySQL DBA: How do you know when you need more memcache servers?
8 comments:
So, what's wrong with classes? Are you talking about the old days of PHP4 or are you saying classes are bad in PHP5 too?
Thu Oct 09, 10:52:00 AM
I'm new to PHP and recently setup my local machine with PHP and MySQL for doing development. I was sort of stuck when I needed to post my work for the user to test and review. After looking around a bit I found a site that hosts PHP and MySQL apps. I was surprised that it was free - it seems they're offering the service at no cost until 2012. At that point they'll change over to a fee-based service. However, in the meantime, it's a great place to do anything from demo and sandbox right up to posting sites for real.
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Sun Oct 12, 10:31:00 AM
Great article, thanks!
But as a PHP programmer I just can't ignore one thing - your missuse of PHP constants.
$GLOBALS[cfg][disable_feature_memcache] - this makes PHP search for two constants: cfg and disable_feature_memcache. And throws two notices, which are probably ignored. First, these should be used as strings (eg. $GLOBALS['cfg']['disable_feature_memcache']) becouse "it is the right way" :) and secondly, it reduces the overhead of PHP searching for something that does not exist. This way you will surely get less CPU spikes you talk about from your PHP code.
Oh, and yes, I will be looking forward to reading about your opinion why objects/classes in PHP are bad.
Good luck!
Sun Oct 19, 03:59:00 AM
@sk
Yea I'm lazy with constants in this fashion-I'll fix that up.OO PHP programming is hard to trace. If a framework is not established, its very easy for multiple coders to create a huge spaghetti mess of methods that do nested inheritance, side affect public vars, and create unnecessary overhead.
I measured that each instance of PEAR DB.php has a 4K overhead. Which is huge, and directly attributed to the object!
Now, I've seen some really good OOP PHP classes and its actually been a pleasure working in that environment.
What I found to be the easiest methods of coding with multiple developers is procedural coding in PHP.
file_name.inc
function names arefile_name_Function(vars){}
So, anytime you reference a function you know where to debug it immediately.
Sun Oct 19, 01:26:00 PM
I'm new to PHP and recently setup my local machine with PHP and MySQL for doing development. I was sort of stuck when I needed to post my work
for the user to test and review. After looking around a bit I found a site that hosts PHP and MySQL apps. I was surprised that it was free -
it seems they're offering the service at no cost until 2012. At that point they'll change over to a fee-based service. However, in the
meantime, it's a great place to do anything from demo and sandbox right up to posting sites for real.
Their pitch is as follows:
"This is absolutely free, there is no catch. You get 350 MB of disk space and 100 GB bandwidth. They also have cPanel control panel which is
amazing and easy to use website builder. Moreover, there is not any kind of advertising on your pages."
Check it out using this link:
http://www.000webhost.com/83188.html
Important: There's one catch in that you must make sure you visit the account every 14 days - otherwise the account is marked 'Inactive' and
the files are deleted!!!
Thanks and good luck!
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