#scalability

"In this guest post Jake Luciani (@tjake) introduces Lucandra, a Cassandra-based backend for Lucene."

"Resque is our Redis-backed library for creating background jobs, placing those jobs on multiple queues, and processing them later."

"It's a clever solution because you end up defining what doesn't get cached instead of what does get cached. It's a sideways way of looking at the problem -- sort of like how Django's template inheritance system defines which parts of the page change instead of defining server-side includes of the common bits."

"Slides from LinuxWorld presentation by John Engates, CTO of Rackspace."

"Siege is an http regression testing and benchmarking utility. It was designed to let web developers measure the performance of their code under duress, to see how it will stand up to load on the internet. Siege supports basic authentication, cookies, HTTP and HTTPS protocols. It allows the user hit a web server with a configurable number of concurrent simulated users. Those users place the webserver "under siege." "

"After a point the sql server becomes the bottleneck in lots of web application, and to scale, master-slave replication with single master, multiple slave is recommended. This setup with nginx can be used to accomplish traffic distribution between master and slave based on request method. "

"It seems that using queuing systems in web apps is the new hottness . While the basic idea itself certainly isn’t new, its application to modern, large, scalable sites seems to be. At the very least, it’s something that deserves talking about — so here’s how Flickr does it, to the tune of 11 million tasks a day."

"Shut up about scalability, no one is using your app anyway."