Memcached vs. RethinkDB vs. IBM DB2

Implements the App Engine memcache API.

Caching in Rails apps.

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.

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.

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

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

Our caching needs

HTML page caching for high performances

キャッシュ

Shared object cache for sharded service backend.

Fragment caching.

Used as simple key-value cache store. To store query results etc.

Caching service.

Redis works just fine, we do not use this.

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

Sharded and replicated storage, NoSQL with joins

As a boring document oriented database with safe defaults.

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