June 2010
Intermediate to advanced
338 pages
10h 33m
English
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Where the Cloud Doesn't Fit (for Picnik)
Picnik doesn't use EC2 for either our web servers or our MySQL database servers. Our web-serving layer is highly coupled to our databases, so it makes sense to keep the latency between them very low. That implies that they are either both in the cloud or both out of the cloud. Until very recently, disk I/O performance in EC2 was mediocre, so that necessitated keeping the DBs on real (and specialized) hardware. This might start to change with the introduction of Amazon's RDS, which is basically a nicely packaged version of MySQL on top of EC2.
Even though database performance might not be up to the task of a high-performance production server, I have toyed with the idea of using EC2 instances for DB slaves. These slaves would be primarily used for backups but could also be used for reports or batch jobs.
Another capability that was lacking from Amazon's cloud offering early on was load balancing. Although it is possible to have a decent amount of load balancing on an EC2 instance, you have to jump through a bunch of hoops to get any reasonable level of availability. Amazon eventually introduced a load balancer offering which eliminates many of those concerns.
The cloud landscape is changing very quickly. When we started working on Picnik, cloud offerings were sparse and untried, so we decided to run our own servers. If we were building Picnik in today's landscape, there's a reasonable chance we'd do things differently.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.