Performance

The aim of the JavaScript Aggregator module is to improve performance of your site with less server requests and bandwidth per page. In Drupal 5, all the JavaScript files will be aggregated into one file and optionally minified. JavaScript aggregation was brought into core with Drupal 6, so the Drupal 6 version of this module goes one step further to minify that file.

It basically does the following:

• Takes the $scripts variable and removes .js files using a regular expression
• Generates a unique filename for any set of .js files
• Creates and caches one file containing all .js files in files/js
• Optionally minifies the JavaScript using JSMin
• Returns a modified $scripts variable with link to cached file

This module provides easy Content Delivery Network integration for Drupal sites.

Node Hierarchy allows nodes to be children of other nodes creating a tree-like hierarchy of content. The module offers:

• 1-Click creation of hierarchical menus
• Hierarchical breadcrumbs
• Automatic hierarchical urls using Pathauto (and token module)
  (eg: q=aboutus/history/beginning).
• Automatic creation of hierarchical menus if desired.
• Optional Views integration.
• Optional Node Access integration.

Initial development of this module was performed by kkaefer, this was sponsored by NowPu

Description

This module defines the "hierarchical_select" form element, which is a greatly enhanced way for letting the user select items in a hierarchy.

Hierarchical Select has the ability to save the entire lineage of a selection or only the "deepest" selection. You can configure it to force the user to make a selection as deep as possible in the tree, or allow the user to select an item anywhere in the tree. Levels can be labeled, you can configure limit the number of items that can be selected, configure a title for the dropbox, choose a site-wide animation delay, and so on. You can even create new items and levels through Hierarchical Select!

For a good overview of what Hierarchical Select can do, look at this demo!

Drupal 7 version

The Drupal 7 version integrates with:

• Taxonomy (Drupal core)
• Menu (Drupal core)
• Entity Reference (rudimentary support)

Introduction

This module allows Drupal cache bins to be stored in files.

Comparison with other caching modules

memcache is the closest caching module. File Cache can be configured to use a memory based filesystem (e.g. /dev/shm in Debian) which is very close to what memcache does. File Cache can use network filesystems and this
is another use case where memcache is traditionally used.

apc can be used for cache bins too. If it's used for that purpose,
it's usually only for some of the critical cache bins like cache and
cache_bootstrap.

boost generates caches of pages that are directly served by web
server. File Cache can plug in regular Drupal page caching and provide
very fast page caching but this still needs a bit of PHP to be
executed. Database access can be avoided altogether though. See
$conf['filecache_fast_pagecache'] in README.txt.

Relation with cacherouter and fastpath_fscache modules for Drupal 6.

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