As part of the cacheing system within Drupal.

Memcached mainly took care of creating and rebuilding the REST API cache once changes had been made within Drupal.

Distributed cache exposed through Google App Engine APIs; use to stage fresh data (incoming and recently processed) for faster access in data processing pipeline.

High-speed update-aware storage used in our region server infrastructure; provides a good middle layer for storage of rapidly modified information.

Memcache caches database results and articles, reducing overall DB load and allowing seamless DB maintenance during quiet periods.

Used to cache most used files for our clients. Connected with CloudFlare Railgun Optimizer.

Main database, using it in multiple datacenters in an active-active configuration.

Memcached is used as a simple page cache across the whole application.

Angel includes support for multiple databases, out-of-the-box.

As a boring document oriented database with safe defaults.

Sharded and replicated storage, NoSQL with joins