Performance

OPcache is an opcode cache for PHP. It is bundled with PHP 5.5.0 and later, and it is available in PECL for PHP 5.4.

This is a simple module that uses cacheobject permitting you to configure a different TTL for cache form entries.

Drupal module to defer JS loading after a signal, it is a JavaScript Quality of
Service oriented module. This is useful to give some scripts priority in front

The static module generates a complete copy of your website in html form including all js, css, images and other assets.

OpenStack Object Storage (Swift) is ideal for cost effective, scale-out storage.

This module provides a small "caching" extension to the Juicebox HTML5 Responsive Image Galleries module that allows the XML-based configuration for each gallery to be delivered via a local caching mechanism instead of being built in isolation. It's primary purpose is to bypass limitations introduced by 3rd party modules that don't deal with fields in a native way (such as Panel Nodes). More technical details are listed below but put very simply you probably want to try this module if you see a warning like the following while configuring a Juicebox gallery:

You appear to be using the Juicebox field formatter with a field instance that is not directly attached to an entity. This configuration is not officially supported and will likely not work as expected.