Scalability: The Scaling Myth
Scalability is not about using Java...We can create a scalable system in PHP that contains only one tier, no XML, no Java, and isn't even very fast:
<?php...It meets our three scalability criteria nicely. We can accommodate traffic growth by adding more web servers; nothing in the code needs to be changed...Our code is also very maintainable; there's not a trained programmer out there who couldn't figure out how to maintain it--for instance, if we needed to change it to say "Hello there". ["Building Scalable Web Sites" p. 203]
sleep(1);
echo "Hello world!";
?>
Comments
it is very easy to make something look like it is "scaling up well" when you don't actually do anything at all
sleeping for 1 second is not equivalent to executing an operation that takes 1 second
Actually, I think *you* are missing the point entirely ;) This is a quote from a book. It's supposed to be funny ;)
To address your point, it doesn't matter if it sleeps or if it actually spins in a busy loop for a second. The code in question scales horizontally because there's no data that needs to be shared between the servers.
agreed!
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