W3 Total Cache
The only WordPress Performance Optimization (WPO) framework; designed to improve user experience and page speed.
Recommended by web hosts like: Page.ly, Synthesis, DreamHost, MediaTemple, Go Daddy, Host Gator and countless more.
Trusted by countless companies like: AT&T, stevesouders.com, mattcutts.com, mashable.com, smashingmagazine.com, makeuseof.com, yoast.com, kiss925.com, pearsonified.com, lockergnome.com, johnchow.com, ilovetypography.com, webdesignerdepot.com, css-tricks.com and tens of thousands of others.
W3 Total Cache improves the user experience of your site by increasing server performance, reducing the download times and providing transparent content delivery network (CDN) integration.
An inside look:
Benefits:
- At least 10x improvement in overall site performance (Grade A in YSlow or significant Google Page Speed improvements) when fully configured
- Improved conversion rates and "site performance" which affect your site's rank on Google.com
- "Instant" subsequent page views: browser caching
- Optimized progressive render: pages start rendering quickly
- Reduced page load time: increased visitor time on site; visitors view more pages
- Improved web server performance; sustain high traffic periods
- Up to 80% bandwidth savings via minify and HTTP compression of HTML, CSS, JavaScript and feeds
Features:
- Compatible with shared hosting, virtual private / dedicated servers and dedicated servers / clusters
- Transparent content delivery network (CDN) management with Media Library, theme files and WordPress itself
- Mobile support: respective caching of pages by referrer or groups of user agents including theme switching for groups of referrers or user agents
- Caching of (minified and compressed) pages and posts in memory or on disk or on CDN (mirror only)
- Caching of (minified and compressed) CSS and JavaScript in memory, on disk or on CDN
- Caching of feeds (site, categories, tags, comments, search results) in memory or on disk or on CDN (mirror only)
- Caching of search results pages (i.e. URIs with query string variables) in memory or on disk
- Caching of database objects in memory or on disk
- Caching of objects in memory or on disk
- Minification of posts and pages and feeds
- Minification of inline, embedded or 3rd party JavaScript (with automated updates)
- Minification of inline, embedded or 3rd party CSS (with automated updates)
- Browser caching using cache-control, future expire headers and entity tags (ETag) with "cache-busting"
- JavaScript grouping by template (home page, post page etc) with embed location control
- Non-blocking JavaScript embedding
- Import post attachments directly into the Media Library (and CDN)
- WP-CLI support for cache purging, query string updating and more
Improve the user experience for your readers without having to change WordPress, your theme, your plugins or how you produce your content.
0.9.2.11
- Added option to disable the Minify Auto filename length test and specify manual value for hosting environments like Windows that require it
- Fixed NetDNA / MaxCDN authorization key issues
- Fixed OAuth name conflict for NetDNA / MaxCDN
- Fixed CDN and CNAME replacement for minify URLs
- Fixed WordPress sub-directory issue
- Fixed handling of moved / renamed wp-content and plugin directory
- Fixed Multisite issue when CDN is enabled and Minify is in auto mode and network-wide settings are applied
- Fixed late init handling
- Fixed handling of HTML debug comments being incorrectly inserted into documents
- Improved minify auto file naming for single install
- Improved page caching performance in NFS-based hosting environments
0.9.2.10
- Added NetDNA / MaxCDN dashboard widget
- Added zone dropdown for NetDNA and MaxCDN CDNs
- Added create pull zone for NetDNA and MaxCDN CDNs
- Added notification(s) if incompatible plugins are detected
- Added "Disable CDN on the following pages" setting
- Added "Disable CDN on SSL pages" setting
- Added late init support for page cache's fragment caching
- Added POT file
- Added translations NL, PL
- Fixed setenvif issue in htaccess rules
- Fixed failed rewrite (404) and not caching feeds in nginx
- Fixed NetDNA / MaxCDN CNAME purging issues and "Test CDN" functionality
- Fixed Azure container handling
- Fixed New Relic verification
- Fixed theme preview
- Fixed wrong path issue with w3tc-wp-loader.php
- Fixed auto mode of Minify and filename lengths
- Fixed purging monthly archives with Varnish
- Fixed insert, delete, update quries purging with database cache
- Fixed HTTP compression when dynamic page fragments are used
- Fixed PHP_STRING and other warnings
- Fixed case sensitive header detection
- Fixed HEAD request handling
- Fixed event scheduling propagation in Multi Site
- Improved CDN custom file paths
- Improved handling of legacy config files
- Improved NetDNA / MaxCDN alias, key, secret string handling (backwards compatible)
- Improved auto mode for minify file naming which was causing unncessary issues
- Improved handling of hardcoded WordPress paths
- Improved the file management functionality (FTP support, file permissions etc)
- Improved disk cache directory usage
- Improved garbage collection of expired cache files for disk enhanced method of page caching
- Improved drop-in verification, only adds required drop-ins
- Improved New Relic error notification handling
- Improved New Relic "app name" settings with Multi Site
- Improved cacheable mime type detection in Page Cache
- Improved ob_callback performance and reduced number of output buffer calls
- Improved minify handling with CDN and Multi Site
- Improved Object Cache purge policy performance
- Improved Database Cache purge policy performance
- Improved handling of request methods other than GET, POST for page caching
- Removed setting of New Relic app name in htaccess; set manually or use the dynamic setting on the "Monitoring" tab
0.9.2.9
- Fixed saving settings issue with CloudFlare on activation
- Fixed issue with DbCache and Object Cache flushing
- Improved security for CloudFlare API calls
- Improved security for mfunc, now disabled by default and requires security string in order to execute: CVE-2013-2010
- Improved behavior of GET string, used for detecting blogs in disk enhanced page caching mode for multi site to prevent redirect loops and other issues
0.9.2.8
- Fixed /tmp file creation issue when saving settings
- Fixed auto minify
- Fixed New Relic API key verification
- Fixed uncommon issue with require ObjectCache failing
- Fixed uncommon open_basedir verification issue
- Improved notification handling by modified WordPress FileSystem API implementation
- Added PHP file handling to support cases not covered by default WordPress FileSystem API
0.9.2.7
- Fixed config file write in more hosting environments
- Fixed legacy config file import on servers with hardened file permissions
- Fixed page cache write cache rules in some environments
- Fixed HiDPI images
- Fixed false positive notifications when permissions are not changed or same
- Fixed minify help
- Improved upgrade notifications
- Improved page cache and minify notifications
0.9.2.6
- Added support for grouping cache entries for easier flushing
- Added more options for placing minified files on pages. Custom placements using HTML comments.
- Added CSS inclusion for auto / manual minify. If present its used:
- Added JS inclusion for minify auto mode. If present its used: ,
- Added JS inclusion for minify manual mode. If present they are used when selecting correspong location in placement dropdown: , ,
- Added new minification inclusion options, async, defer, extsrc and asyncsrc
- Added flushing sitemaps
- Added flushing custom pages
- Added flush the current blog when flushing in MultiSite
- Added flushing home page and/or post page if static
- Added flushing older pages (page/2, page/3) on purge requests
- Added flushing a limited amount of pagenumbers
- Added purging caches for deleted blogs in WordPress MultiSite
- Added uninstall process to the plugin for easier cleanup
- Added upgrade support that cleans up and removes old cache folders
- Added message when disk enhanced page caching is not working properly
- Added custom wp-content name and locations
- Added CDN feature "Dont use CDN for specific roles"
- Added "Purge from cache" link on edit post/page pages
- Added permalink suffixes (.html, .htm etc)
- Added uploading blogs.dir files when using MultiSite and CDN
- Added notification about IAM when using Amazon services (SNS, CloudFront, S3 etc)
- Added 'Don't minify JS files' 'Don't minify CSS files' options for minify
- Added Access-Control-Allow-Origin support for CDNs
- Added hooks clean_post_cache and menu changes
- Added caching JSON mime-type. Other mime-types can be added using array filter 'w3tc_is_cacheable_content_type'
- Added automatic reloading of config files when APC apc.stat is disabled
- Added request reload of APC file over HTTP
- Added priming of post on publish
- Added single config file (by default) when using WordPress MultiSite
- Added switch_to_blog() support
- Added wp_cache_decr, wp_cache_incr support
- Added wp_cache_switch_to_blog support
- Added fragment caching functionality that extends the transient caching methods in WordPress core
- Added network activation and network policy management
- Added control for comment cookie lifetime
- Added Go Daddy SUBDOMAIN_DOCUMENT_ROOT directive support
- Added JSON to mod_deflate configuration
- Added JavaScript mime-type variations to mod_deflate configuration
- Added WP-CLI support for purging cache, purging pull CDNs, reloading APC files, clearing APC, deleting pgcache files, and updating browser query string
- Added .htc mime type
- Added Rackspace CloudFiles container location selection
- Added rejected terms in database cache, to allow for deeper database caching capability
- Added Akamai CDN origin pull support
- Added system cache purge when apc.stat is disabled
- Added origin rel canonical support for CDNs
- Added AT&T origin pull CDN
- Added full-page mirroring and purging for origin pull CDNs
- Added compatibility mode improve disk enhanced page caching performance ~20% for users that don't care about interoperability
- Added nginx example files
- Added varnish example files
- Added basic application monitoring support using New Relic
- Added application monitoring widget using New Relic
- Added plugin dashboard page to display widgets etc
- Added purge from cache link to admin bar dropdown while browser posts/pages on front-end
- Added purge CDN completely link to admin bar dropdown
- Added CDN SSL checkbox "Disable CDN on SSL page"
- Added pull CDN support to MultiSite
- Fixed caching of the "Front Page" and added an option for the same
- Fixed w3_url_format function was not included error
- Fixed security vulnerability with file cache: disk basic page caching, database or object caching to disk. CVEs: CVE-2012-6077, CVE-2012-6078, CVE-2012-6079
- Fixed issue with concurrent writes to single config file
- Fixed Preview mode and deploy button
- Fixed varnish purging (See varnish config example file in ini folder)
- Fixed false positive notification on Page Cache: Disc Enhanced
- Fixed broken images for feedburner in dashboard on HTTPS sites
- Fixed minify ID generation causing notices
- Fixed false positive on minification related to group configuration among other
- Fixed default wp-content path and CDN uploads when WordPress is installed in directory
- Fixed pages not flushing when making changes in WordPress Admin
- Fixed mod_filter being used on unsupported Apache versions
- Fixed WordPress upgrade issue caused by W3TC remaining active
- Fixed minify path when using WordPress MultiSite and blogs in sub-directories
- Fixed user interface for "Dont cache specific roles"
- Fixed CDN and minify to file for storage
- Fixed feed_link filters interferring with feed purging
- Fixed false positive with minify rewrite test and WordPress MultiSite sub-directory mode
- Fixed WordPress Multisite in sub-directory mode and minify paths
- Fixed caching posts page when using static home page
- Fixed object cache not being initialised before getting options
- Fixed locating document root for minify in certain environments
- Fixed saving settings if permalinks are turned off
- Fixed "Install" page displaying rules that is not required
- Fixed minify cache being empty while page is cached so no minified files are generated, minified files auto generation no longer depend on pages not being cached
- Fixed unnecessary flushing with SSL, user agents and referrer not being activated
- Fixed "Purge from Page Cache" not purging varnish or CDN when enabled
- Fixed CSS minification and relative paths in external files
- Fixed login / logout and compatibility with BuddyPress
- Fixed flushing same posts many times if status is trashed or restored
- Fixed handling of .html fancy permalinks with nginx
- Fixed handling of missing xcache opcode cache
- Fixed Amazon S3 allowing LIST permissions to everyone
- Fixed handling of .xml mime type
- Fixed numerous object cache compatibility issues
- Fixed memcached port support issue
- Fixed HTTP_HOST not defined warning issue
- Fixed xdebug not configured halt issue
- Fixed minified files not being mirrored by push CDNs
- Fixed uploading to CDNs multiple times even if force overwrite is disabled
- Improved CloudFlare support: purging, dev mode, minification options, automatic IP range updates, rocket loader feature, security levels
- Improved support for the Bad Behavior plugin
- Improved object cache and MultiSite compatibility
- Improved flushing behavior with better post and pages detection. To change behavior hook into filter 'w3tc_flushable_post'
- Improved XML user interface when using Page Cache Disc: Enhanced
- Improved minify filename path generation
- Improved minify custom placement usage
- Improved PHP 5 compatibility by removing deprecated functionality
- Improved WordPress 3.4 and 3.5 compatibility by removing deprecated functions usage
- Improved plugin by removing unnecessary ob_starts
- Improved minify usage by returning old minify files while generating new
- Improved update procedure by removing need to manually deactivate and reactivate plugin
- Improved CDN paths and URL generation using both single and multisite installs
- Improved Admin Bar menu with more flushing actions
- Improved minify auto by adding support for downloading and combining external files
- Improved descriptions for various "Do not cache ..." textareas
- Improved header settings so plugin header settings override WordPress default header where appropriate
- Improved debug logging by adding a debug folder constant: W3TC_DEBUG_DIR
- Improved support for WPTouch plugin
- Improved custom post type support and flushing
- Improved cache key format and handling
- Improved minify support on Windows
- Improved purging functionality for CDN providers
- Improved compatibility wp-fb-autoconnect plugin
- Improved support of WordPress installed when in a sub-directory
- Improved support of non-default WordPress folder setups
- Improved use of HTTP API and FileSystem API in WordPress. HTTP API usage improves minify and CDN functionality. FileSystem API integration improves activation, deactivation and configuration changes
- Improved execution time across all caching engines
- Improved cache miss performance for page caching
- Improved notification handling
- Improved cache priming algorithm
- Improved minify error reporting
- Improved varnish purging capability
- Improved memory caching logic and purging speed
- Improved support for auto minify in more hosting environments
- Improved support for use of sockets in memcached
- Improved handling of old settings upon update
- Improved detection of document root on additional hosting providers
- Improved handling of eTags
- Improved browser cache policy options
- Improved bug submission form implementation
- Improved NetDNA / MaxCDN support by using their new API
- Disabled minify if CloudFlare is active
- Removed PHP 4 support
- Removed cookie used for user agent groups unless the feature is used
- Removed cookie used for referrer unless the feature is used
- Removed duplicate inclusion of JSON library
0.9.2.5
- Fixed security issue that can occur if using database caching to disk. If using database caching to disk with a web server with directory listing or web accessible wp-content/w3tc/dbcache/* directories. This patch works for all hosting environments / types where PHP is properly configured, i.e. .htaccess modifications (or other web server configuration changes) are not necessary to ensure proper security. Empty the database cache after performing the update if you use database caching to disk.
0.9.2.4
- Added support for Microsoft SQL Server
- Added API support for MediaTemple ProCDN (EdgeCast)
- Added set_time_limit to self test
- Fixed LiteSpeed web server support issues
- Fixed native hostname 301 redirect
- Fixed redundant object origin push export
- Fixed WSOD (white screen of death) caused by minify in some hosting configurations
- Fixed text encoding in feeds
- Fixed incorrect mime-type in feeds (which caused feedburner anomalies)
- Fixed array to string notices
- Fixed expires header support for AWS
- Fixed minification of font-family
- Fixed object cache write issue in WP Admin
- Improved (reduced) memory utilization by up to 70%
- Improved disk enhanced page caching performance
- Improved object caching performance
- Improved activation reliability
- Improved reliability of minify auto mode
- Improved security (added nonces, no directory indexing, prevent direct file access)
- Improved compatibility with network based file systems
0.9.2.3
- Added additional CloudFlare IP ranges
- Fixed html tidy encoding
- Fixed NetDNA / MaxCDN purging
- Improved handling of markers in .htaccess files - easier upgrades
- Improved cache busting logic
- Improved numerous notifications and user interface behaviors
- Improved AWS S3 and Cloudfront reliability
- Improved reliability of minify auto mode
0.9.2.2
- Fixed minify directives, e.g.: "File param is missing," causing minify caching to fail
- Fixed document root detection for IIS server
- Fixed HTTP compression when using CloudFlare
- Fixed HTML validation with JavaScript embed tags
- Fixed fancy permalinks, sites with or without trailing slashes can now cache pages using disk enhanced
- Fixed appending WP_CACHE define into wp-config.php for some users
- Fixed path to JSON.php
- Fixed listing of buckets error with AWS S3
- Improved compatibility with WordPress SEO by Yoast, 404 error exception list sitemap value changed to: sitemap(_index|[0-9]+)?.xml(.gz)?
0.9.2.1
- Fixed existing installation upgrades: set minify to manual mode by default
- Fixed unsuccessful transfer queue button
- Fixed background in lightbox
- Fixed handling of local http requests being blocked on some hosts
- Disabled CDN for minify files when auto mode is selected and the CDN method is origin push
0.9.2
- Added support for nginx web server
- Added support for CloudFlare
- Added origin pull support for Amazon Cloudfront
- Added Microsoft Azure Storage support for CDN
- Added WinCache opcode cache support
- Added additional minifier engines for HTML, CSS and JS including: HTMLtidy, CSStidy, Closure Compiler, YUI Compressor
- Added Google Page Speed integration
- Added support for @import processing
- Added controls for page cache purging policy
- Added auto mode for minify (not compatible with CDN)
- Added support for set cookie domain setting
- Added reliability improvements for Amazon Web Services
- Added referrer group management for uniquely caching these cases
- Added Amazon S3 bucket location selection control
- Added support CNAMEs confguration support for Amazon Cloudfront
- Added purge tool
- Added support of custom wp-config.php location
- Added cache busting support
- Improved object caching performance when no plugins are active
- Improved non-blocking JS embedding implementation
- Improved reliability of CDN export operations
- Improved implementation of headers for all cache engines
- Improved minify help (recommendations) tool
- Improved handling of .htaccess directive changes
- Improved support of IIS web server
- Improved varnish support
- Fixed bugs with API changes with Rackspace Cloudfiles
- Fixed bugs with origin push content delivery network methods
- Fixed HTML encoding
- Fixed emptying cache for various cache keys
- Fixed rejected CDN file support
- Fixed HTTPS mode in WP Admin
- Fixed relative document root for disk enhanced page cache
- Fixed trailing slash for disk enhanced page cache
- Fixed minify template group settings being lost upon upgrade
- Fixed division by zero error
- Fixed object cache clones
- Moved browser cache rules to site root instead of document root
0.9.1.3
- Improved error messages with AWS S3 CDN
- Added SSL support for CDN
- Added control for CDN queue upload interval
- Added option for 404 file exceptions list in browser cache
- Added exception for NextGen Gallery flash image rotator to CDN settings
- Fixed external file imports
- Fixed document root detection for CDN
- Fixed minify file search
- Fixed bugs with AWS CloudFront distribution creation and saving
- Fixed Rackspace Cloud Files API
0.9.1.2
- Improved media library import compatibility
- Improved various notifications
- Changed expires implementation to last accessed instead of last modified
- Resolved Apache 1.3 compatibility issue
- Fixed issues with document root detection on some servers
- Fixed an issue with minification of script tags with HTML comments inside
- Fixed minify gzip compression
- Fixed cache-control headers
- Fixed empty fatal error notification on network activation
- Fixed minify when https is active
- Fixed fatal error upon activation when uploads path does not exist
0.9.1.1
- Added an additional notification to help users identify incomplete installations upon activation
- Reverted previous Cloud Files workaround
- Fixed preview mode buttons
- Fixed duplicate entries appearing when using minify help tool more than once
- Fixed browser cache rules generation for media files
0.9.1
- Improved Rackspace Cloud Files implementation
- Improved frequently asked questions implementation to support incomplete PHP distributions
- Fixed 500 Internal Server Error when upgrading with Disk enhanced mode enabled
- Fixed notification issues with preview mode
- Fixed an issue with fatal errors with minify and memcache(d) caching engine
0.9
- Added preview feature so all cache settings can be reviewed prior to deployment
- Added minify configuration wizard (help button on minify tab)
- Added "never cache the following pages" to database and object cache
- Added minify option to JavaScript embed after <body>
- Added minify error notifications
- Added drag and drop dependency resolution for minify CSS / JavaScript groups
- Added object caching
- Added option to automatically page cache prime (preload) with or without XML sitemap
- Added support for multiple CNAMEs to CDN
- Added support for minifcation of any respective theme installed a single site
- Added support for page caching of multiple themes for various user agent groups
- Added support for theme switching / redirection based on groups of user agents
- Added compatibility with WP Super Cache fragment caching method (disk basic mode only)
- Added HTTP compression and headers for AWS S3
- Added ignored comment stems field, with Google AdSense default value to HTML minify
- Added support for varnish purging
- Added Rackspace Cloud Files support
- Added native NetDNA / MaxCDN integration
- Added option to cache 404 pages
- Added changed files auto-upload to CDN
- Added option to handle 404 errors for static objects directly with the web server
- Added support for gravity forms to database cache default settings
- Added changed file auto-upload to CDN
- Database connection errors now return internal server (500) error response and are thus not cached
- Incomplete plugin installation / removal no longer generates public errors
- Unterminated string errors no longer display publicly
- Support tab improvements
- Install tab improvements
- Resolved conflicts with disk enhanced .htaccess directives insertion
- Improved compatibility with all mobile plugins
- Improved AWS reliability
- Improved browser caching support and management
- Improved directory management for disk caching methods for increased performance
- Improved handling of missing minify files
- Improved Media Library import
- Improved Multi Site support
- Improved SSL interoperability
0.8.5.2
- Added support for Bad Behavior plugin
- Added support for eAccelerator 0.9.5.3 and XCache opcode caches
- Added support for rewriting href attribute of anchors for images that use the CDN
- Added deflate http compression support to minify
- Added setting of file modification time after FTP upload
- Added check of file modification time and file size before FTP upload
- Added check of file hash before uploading to Amazon S3
- Added option to force replacement of uploaded attachments on CDN
- Added option to toggle feed minification
- Added combine only option for CSS minification to overcome invalid CSS files
- Added configuration file import / export
- Database caching now disabled by default to improve compatibility with some shared hosting environments
- Default page caching method now disk enhanced
- Improved HTTP Compression inter-operability
- Improved compatibility with Multi Site Manager
- Improved apache compatibility
- Improved .htaccess directives
- Improved header management for posts / pages
- Improved notifications
- Improved minify handling of external files
- Improved minify memory limit to avoid blank pages when document size is large
- Improved minify reliability by reducing comment removal options
- Improved Media Library Import versatility
- Improved reliability of plugin activation in WordPress MU
- Improved security handling for some operations
- Improved reliability of handling file names containing spaces in CDN functionality
- Improved non-blocking embedding reliability
- Improved memcached detection by supporting only PECL memcache
- Fixed disk enhanced method of page cache in WordPress MU
- Fixed false match of page cache files in disk enhanced method of page cache
- Fixed cron anomalies caused by caching of wp_options table
- Fixed missing trailing slash issue when using disk enhanced page caching
- Fixed auto-embed bug CSS and JS when already manually embedded
0.8.5.1
- Added option to CDN Settings to skip specified directories
- Added option to allow for full control of HTTP compression options for page cache (some WordPress installations have issues with deflate)
- Added sql_calc_found_rows to default auto reject SQL list
- Added more notification cases identified and configured
- Added new mobile user agents for Japanese market
- Page cache performance improvements for disk enhanced mode
- Improved FAQ and option descriptions
- Improved apache directives for minify headers
- Improved handling of redirects
- Improved name space to avoid issues with other plugins
- Improved handling of incomplete installations, caching runs with default options if custom settings file does not exist
- Fixed anomalies with memcached-client.php in some environments
- Fixed another interface bug with management of minify files
- Fixed minor bug with table column length for some MySQL versions
- Fixed minify bug with CRLF
- Fixed minify bug with handling of zlib compression enabled
- Fixed handling of pages with CDN Media Library import
0.8.5
- Added "enhanced" disk caching mode for page cache, a 160% performance improvement over basic mode
- Added disk caching as an option for Database Cache
- Added CDN support for Amazon S3 and CloudFront
- Added mobile user agent rejection and redirect fields to page cache for handling mobile user agents
- Added Submit Bug Report tab
- Added support for detection of custom templates for minify groups
- Added separate controls expiration time field for minify and page cache settings
- Added PHP4 Support Notification to handle fatal errors on activation
- Improved database caching by 45%
- Improved handling of cache-control HTML headers
- Improved handing of 3rd Party CSS file minification
- Improved media library import reliability
- Improved handling of
DOCUMENT_ROOTon some servers - Improved garbage collection routine
- Improved handling of
<pre>and<textarea>minification - Improved handling of regular expressions in custom file list in CDN settings
- Improved handling of media library attachments in RSS feeds
- Improved handing of subdomains for CDN settings
- Improved various notifications and error messages
- Improved optional .htaccess directives
- Fixed JS minifcation saving group settings
- Fixed false positives for duplicate CSS or JS in minify settings
- Fixed bug causing settings to be lost on upgrade
- Fixed attachment URI when CDN mode enabled
- Fixed small bug with FTP upload when CDN Method is Mirror (Origin Pull)
- Fixed the URI for wlwmanfiest.xml when CDN enabled
- Fixed handling of HTTPS objects according to options
- Fixed emptying disk cache under various obscure permutations
- Fixed handling of obscure open_basedir restrictions
- Fixed various bugs with emptying cache under various obscure permutations
- Fixed installations deeper than document root
0.8
- Added disk as method for page caching
- Added support for mirror (origin pull) content delivery networks
- Added options to specify minify group policies per template
- Added options for toggling inline CSS and JS minification to improve minify reliability
- Added option to update Media Library attachment hostnames (when migrating domains etc)
- Added "Empty Cache" buttons to respective tabs
- Added additional file download fallback methods for minify
- Improved cookie handling
- Improved header handling
- Improved reliability of Media Library import
- "Don't cache pages for logged in users" is now the default page cache setting
- Fixed minify bug with RSS feeds
- Fixed minify bug with rewriting of url() URI in CSS
- Addressed more page cache invalidity cases
- Addressed rare occurrence of PHP fatal errors when saving post or comments
- Addressed CSS bug on wp-login.php
- Addressed rare MySQL error when uploading attachments to Media Library
- Modified plugin file/directory structure
- Confirmed compatibility with varnish and squid
0.7.5.2
- Added warning dialog to minify tab about removal of query strings locally hosted object URIs
- Added empty (memcached) cache button to each tab
- Improved reliability of memcache flush
- Minified files now (optionally) upload automatically according to update interval (expiry time)
- Changed directory of minify working files to wp-content/w3tc-cache/
- Fixed parsing memcached server strings
- Fixed minify sometimes not creating files as it should
- Addressed WordPress network activation/deactivation issues
- Provided memcache.ini directives updated to improve network throughput
0.7.5.1
- Added memcached test button for convenience
- Added option to concatenate any script to header or footer with non-blocking options for scripts that cannot be minified (e.g. obfuscated scripts)
- Added options to concatenate JS files only in header or footer (for use with obfuscated scripts)
- Improved notification handling
- Improved compatibility with suPHP
- Improved reliability of Media Library Export
- Fixed database cache that caused comment counts to become out of date
- Fixed minor issue with URI with CDN functionality enabled
- Removed unnecessary minify options
- Minification error dialogs now disabled when JS or CSS minify settings disabled
- Normalized line endings with /n as per minify author's direction
- Resolved bug in the minify library preventing proper permission notification messages
0.7.5
- Added handling for magic_quotes set to on
- Fixed issue with auto-download/upgrade and additional error checking
- Fixed bug preventing minify working properly if either CSS or JS minification was disabled
- Improved handling of inline comments and JavaScript in HTML documents
- Improved handing of @import CSS embedding
- Addressed privilege control issue
- Resolved warnings thrown in various versions of WordPress
- Memcached engine logic modified to better support clustering and multiple memcached instances
- Eliminated false negatives in a number of gzip / deflate compression analysis tools
- Total plugin file size reduced
0.7
- Added minify support for URIs starting with /
- WordPress network mode support bug fixes
- Minor CDN uploader fixes
- Minor error message improvements
0.6
- Added "Debug Mode" listing all settings and queries with statistics
- Improved error message notifications
- Improved cache stability for large objects
- FAQ and installation instructions corrections/adjustments
- Support for multiple wordpress installations added
- Resolved bug in minification of feeds
0.5
- Initial release

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