引述 :『Out of the box, drupal does pretty good on Joyent. With some tuning, Joyent has multiple production Drupal sites with recorded traffic volumes from very small to well over 1.5 Billion Page Views per month. A recent load test did 1000 requests/sec (2.5 Billion Page views per month) to a dynamic node in a well configured Drupal installation.』

引述 :『Project Caroline is a research program developing a horizontally scalable platform for the development and deployment of Internet services. The platform comprises a programmatically configurable pool of virtualized compute, storage, and networking resources. Project Caroline helps software providers develop services rapidly, update in-production services frequently, and automatically flex their use of platform resources to match changing runtime demands.』

引述 :『Tag1 Consulting, Inc, specializes in performance and scalability tuning of the entire LAMP stack, which is Linux, Apache, MySQL, and PHP. We also specialize in Drupal, opcode caches, memcached, load balancers, integration with content delivery networks, network security, searching, and infrastructure design and deployment. 』

引述 :『It is not always easy to scale Drupal -- not because Drupal sucks, but simply because scaling the LAMP stack (including Drupal) takes no small amount of skill. You need to buy the right hardware, install load balancers, setup MySQL servers in master-slave mode, setup static file servers, setup web servers, get PHP working with an opcode cacher, tie in a distributed memory object caching system like memcached, integrate with a content delivery network, watch security advisories for every component in your system and configure and tune the hell out of everything.』

引述 :『When asked what they mean by scalability, a lot of people talk about improving performance, about implementing HA, or even talk about a particular technology or protocol. Unfortunately, scalability is none of that. Don’t get me wrong. You still need to know all about speed, performance, HA technology, application platform, network, etc. But that is not the definition of scalability.』

引述 :『By the way, the best book on scaling apps I’ve ever read is Building Scalable Websites, by Cal Henderson (the Flickr guy).』