nginx_http_push_module - Turn Nginx into an adept HTTP Push server
This module turns Nginx into an adept HTTP Push and Comet server. It takes care of all the connection juggling, and exposes a simple interface to broadcast messages to clients via plain old HTTP requests. This lets you write live-updating asynchronous...

Eucalyptus
"Eucalyptus - Elastic Utility Computing Architecture Linking Your Programs To Useful Systems - is an open-source software infrastructure for implementing "cloud computing" on clusters. The current interface to Eucalyptus is compatible with...

Facebook Developers | Resources
Proyectos opensource de Facebook

High Scalability - High Scalability - Strategy: Flickr - Do the Essential Work Up-front and Queue the Rest 
Article also refers to a blog post by Les.

Leverage And Internet Businesses - Scalability and leverage offered to internet businesses are unprecedented.... http://tumblr.com/xiy3yh2ca

Rackspace Cloud Computing & Hosting |  NoSQL Ecosystem
NoSQL Ecosystem

'Database Sharding at Netlog, with MySQL and PHP', developers's blog message on Netlog
ds to monitor multiple servers), and the possibility of "replication lag"; your slaves might get out-of-sync with the master database (because of locking read-queries, downtime, inferior hardware, etc.), resulting in out-of-date results being...

Yahoo Open Sources Traffic Server
"Traffic Server enables the session management, authentication, configuration management, load balancing, and routing for an entire cloud computing stack. Yahoo says that with the open source version of Traffic Server, organizations can benefit from...

Using RabbitMQ Beyond Queueing
Algunos conceptos de rabbitmq

RabbitMQ – A Fast, Reliable Queuing Option for Rubyists
rabbitmq y ror. Varios links utiles

Rabbits and warrens. - Jason's .plan
Conceptos rabbitmq y amqp

face's activity_streams at master - GitHub
Plugin RoR para activity streams

Scalability shouldn't be the enemy of Sustainability - Anil Gupta #TEDIndia #fb

Anil Gupta - scalability must not become the enemy of sustainability. Shows egs of innovations fm grassroots to global #tedindia #tedfellows

RT @TEDNews: Anil Gupta: Scalability must not become the enemy of sustainability.

NoSQL - Wikipedia, the free encyclopedia
Trends in computer architectures are pressing databases in a direction that requires horizontal scalability. NoSQL attempts to address this requirement.

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