Announcing mod_pagespeed binary release 1.1.23.1-beta

[Jud Porter]

The mod_pagespeed team is pleased to announce a new beta binary release, version 1.1.23.1. This release contains numerous new features, enhancements, and bug fixes.

Installation Instructions

If you are currently on the beta channel, you can update as usual:

If you installed the .rpm package, you can update with:

sudo yum update mod-pagespeed-beta

sudo /etc/init.d/httpd restart

If you installed the .deb package, you can update with:

sudo apt-get update

sudo apt-get upgrade

sudo /etc/init.d/apache2 restart

If you are currently on the stable channel and would like to switch to the beta channel, first uninstall mod_pagespeed and install the beta package from:

https://developers.google.com/speed/docs/mod_pagespeed/download

Instructions for building from source are available at:

https://developers.google.com/speed/docs/mod_pagespeed/build_from_source

New Features

• memcached support
• mod_pagespeed now includes support for using memcached as an alternative to the file-based cache. Using memcached allows multiple servers to share optimized resources, reducing server load and improving resource utilization.
• SPDY configuration support
• mod_pagespeed can now be conditionally configured to behave differently when accessed through SPDY.
• TODO add an example of when/how to do this
• CSS3 support
• Parsing of @media tags is now supported, and handling of unsupported @ tags no longer causes parsing to fail.
• Per-Vhost statistics
• mod_pagespeed_statistics can now provide statistics on a per-vhost basis, through the ModPagespeedUsePerVHostStatistics option.
• Expanded default filter set
• flatten_css_imports and fallback_rewrite_css_urls are now enabled in CoreFilters.
• Standalone CSS parser
• In situations where mod_pagespeed is unable to minify a CSS resource, the new standalone CSS parser can be used to debug why the CSS file could not parsed.

New Filters

• extend_cache_pdfs
• Extends the cache lifetime of PDFs. This is beneficial when using a CDN, as the CDN can now serve PDFs without having to check the freshness of the content with the origin, while still remaining responsive to PDF updates.
• fallback_rewrite_css_urls
• Enables rewriting of URLs in CSS files if the CSS cannot successfully be parsed. This filter is in the CoreFilters set.
• pedantic
• This filter makes mod_pagespeed more HTML4 compliant by adding type attributes to style and script tags. This filter is not needed in most cases, as adding those attributes has no effect for browsers, but it can be enabled to fix errors reported by HTML validators.

• Enhanced image rewrite filter control
• Finer-grained control for image rewrite optimizations is now provided. Individual filters are now exposed for metadata removal and image conversion.

New Configuration Options

• ModPagespeedCssFlattenMaxBytes
• ModPagespeedCustomFetchHeader
• <ModPagespeedIf>
• ModPagespeedImageRecompressionQuality
• ModPagespeedImageWebpRecompressionQuality
• ModPagespeedLoadFromFileMatch
• ModPagespeedMemcachedServers
• ModPagespeedMemcachedThreads
• ModPagespeedFileCacheInodeLimit
• ModPagespeedInheritVHostConfig
• ModPagespeedUsePerVHostStatistics
• ModPagespeedRespectXForwardedProto

Issues Resolved

ID	Type	Status	Summary
177	Defect	Fixed	mod_pagespeed_beacon returns 404 with VirtualHost
335	Defect	Fixed	Fetching sharded resources from original domain
373	Defect	Fixed	Default locations for cache/generated files should respect the FHS
377	Enhancement	Fixed	Add wildcard support to ModPagespeedLoadFromFile
392	Defect	Fixed	Lazyily Load Images on Webkit Browsers and the Image Input Element
411	Defect	Fixed	first 3 histograms under /mod_pagespeed_statistics are empty
416	Defect	Fixed	outline_css does not inherit CDN rewrite rules from ModPagespeedMapRewriteDomain
426	Defect	Fixed	Unicode value 0x0 is not valid for interchange
434	Enhancement	Fixed	Provide a pagespeed.conf option to append a custom Header (key->value) to the Serf fetcher
439	Defect	Fixed	Use mimetype rather than doctype for HTML decisions
448	Defect	Fixed	mod_pagespeed_message uses wrong timezone
449	Defect	Fixed	Do not strip image dimensions when an inlined image is enlarged
450	Enhancement	Fixed	disable sharding when running under SPDY in general, mod_spdy in particular
454	Enhancement	Fixed	mod_pagespeed_ap24.so: cannot open shared object file: No such file or directory
457	Defect	Fixed	Resource regeneration doesn't respect custom options
461	Enhancement	Fixed	LoadFromFile blacklist support
462	Defect	Fixed	file cache should enforce a maximum inode count.
463	Defect	Fixed	collapse_whitespace missing whitespace removal in one location
475	Enhancement	Fixed	Add memcached support as an alternative to the file-based cache.
477	Defect	Fixed	Blacklist Android Chrome for webp conversion
480	Defect	Fixed	defer_javascript should turn off for requests with header XMLHttpRequest
488	Defect	Fixed	The use of memcached and load-from-file together is now supported and the bug raised by this issue is fixed. Note that the source release briefly introduced a ModPagespeedFilesystemMetadataCache directive but that has been removed and the configuration is now fully automatic.
490	Enhancement	Fixed	Make css_flatten_imports a core filter
491	Enhancement	Fixed	inline_import_to_link should handle multiple @import statements
493	Defect	Fixed	Is trim_urls in core filter set?
494	Defect	Fixed	pagespeed css fetched by CDN result in cache-control:private,max-age=300
495	Enhancement	Started	VirtualHosts should inherit configuration from root
499	Enhancement	Fixed	Page load count based on actual HTML rewrites (not beacon count)
517	Defect	Fixed	lazyload_images should respect ModPagespeedDisallow directive
523	Enhancement	Fixed	Rewrite <link rel="alternative stylesheet">
529	Defect	Accepted	convert_gif_to_png doc is missing
535	Defect	Fixed	cache size explosion issue due to css in style tags
536	Defect	Fixed	file-cache should count disk usage, not byte-count, when doing garbage collection
542	Defect	Fixed	Site with html in CDATA tag in script tag gets broken by rewrite_javascript
546	Defect	Started	Respect X-Forwarded-Proto
549	Defect	Fixed	Make unit tests & system tests work in open-source flow without memcached running.
555	Defect	Fixed	5 configuration settings documented as being settable in .htaccess don't work there.