Session en anglais - Introduction
Persistance de données
Most of the NoSQL movement and buzz happened around the Map/Reduce type of storage like CouchDB and MongoDB, while Redis, mostly unknown, shines by it's simplicity. It is an in-memory database that (unlike Memcached) actually persists the data to disk to survive restarts and failures. It can help scale up write-heavy applications, but also serves as a great tool to understand how most databases work and learn to think in lower level storage terms, and can be fun to play with for small scale projects.

Jordi Boggiano is the author of a few open source apps/libs (Composer, Monolog, php-console, ..), and frequent contributor to other OSS projects (Symfony2, Twig and others). He has been involved in web development for about 10 years, working mostly with PHP and JavaScript, and is currently doing Symfony2 consulting and application development at Nelmio. You can find his blog and contact details on http://seld.be