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Apache 2.4 Kiboshed SPDY

I won’t be using SPDY because I can’t have my cake and eat it too.

I have a store running on SSL for security reasons. I mean, you kind of have to, right? The problem is you don’t really want to cache SSL pages, as I reminded myself lately. At best, I was able to work around PageSpeed’s idiosyncrasies and compress the HTML and JS somewhat, but still I know that there has to be a better way.

Everyone told me to look at SPDY. Now… this came with some issues. I needed Apache 2.2.4 (I was on 2.2.2):

	httpd >= 2.2.4 is needed by mod-spdy-beta-0.9.4.1-397.x86_64
	mod_ssl >= 2.2 is needed by mod-spdy-beta-0.9.4.1-397.x86_64

race car driving very fastWhat’s an elf to do? Well… what about Apache 2.4? After all, it’s the latest and greatest. This is when my eyebrows jumped. There’s no support for Apache 2.4. And the mod release is only on SPDY 2 when the release is on SPDY 3.1? What on earth is Google doing!? Apparently giving up on mod_spdy which is horrible. Love the open source community though. Patrick Buckley forked it. I cannot stress enough the requirements in life to check into some random stranger before you just download and use their code. Especially when we’re talking servers! Sadly, looking into his code I saw it would upgrade apache and SSL.

Well. No. It’s not that I don’t trust this guy, the code looks okay. It’s trying to install HTTPD 2.4.7 which is not the latest and greatest for my server’s OS (currently 2.4.9). Not to mention some research on cPanel showed issues with mod_spdy and CentOS (including the note that Patrick’s code caused random coredumps). However. The odds are that when, eventually, the stars align and there is mod_spdy (or some alternative) for Apache, it’ll be for 2.4.x so I may as well put the effort into updating today.

Sidebar. Yes I know about nginx. Yes I’m aware of the package for CentOS. Yes I know it’s faster for static files and CSS and JS (and arguably even for PHP). Yes I know it’s easier to use default nginx than to tune Apache. But. I like having my .htaccess file to edit, and I’m not ready to do a total switch yet since this is not my server for me alone. Eventually yes, I will. Today is not that day.

So Apache 2.4! There aren’t a lot of Apache 2.4 issues, but what they have are major enough for me to sit up and pay attention. For example, MPM-itk is no longer provided as an easy install from cPanel, they wanted me to use mod_ruid2, which isn’t compatible with memcache. I really hate that. However. Many people informed me you can still use memcached, and besides which, Apache 2.4 doesn’t support Memcache. I still find it amusing that Cpanel outright says mod_ruid2 is just as dangerous as MPM-itk, but would rather use the one that’s less compatible. It’s not that I can’t install it on my own, of course, it’s as the amount of effort put into working around a problem gets large, the less pleased I am with that as a solution. Work smarter. By the way, mod_ruid2 is available on Apache 2.4. I learned a lot when I installed it myself, now I’ll learn more.

There was a catch in things of course. I’d set up mpm.conf files in /usr/local/apache/conf/userdata/std/2/ and had to roll those back, as they borked deployment. Took me an hour to sort out that. Remember to read the complete errors, folks. Of course I tested things once Apache 2.4 was up, before starting to make sure all my modules etc were still running. I was lucky, I only had to configure pagespeed for Apache 2.4. Everything else worked out of the box. Since I was using MPM Prefork already (worker is not available due to mod_ruid2) I didn’t have to edit anything there.

Devil food cakeWhat did I notice? Memory and load stayed the same. And you’d think that meant this was for nothing. I should mention this happened to be on the same day I got nailed by a 60% bump in traffic on my busiest site. So … that would be better then.

I’m bummed that SPDY isn’t being actively developed for Apache right now, though. For folks who are pushing the HTTP 2.0 world, they seem intent on ignoring or not committing to getting others up to speed. While nginx is awesome, there will always be a reason for people to use other server types. I hope to either see mod_spdy get picked up and loved again, or for someone else (Microsoft’s HTTP S&M?) to pick up the thread and remember that abandonment doesn’t move things forward as fast as you’d think.