Large release, lots of bug fixes :)

Known Issues:
#621668: Large Websites & boost_tree_directory() function don't play along - If you have more then 30K nodes this might be a concern.
#621870: Set time limits when dealing with the file system - Yet another issue with a large # of files in the cache dir.

Notes:
If you have encountered the bug in which a logged in user that just logged out gets the logged in page after hitting the logout link, then this 6.x backport core patch for the htaccess file should fix the issue. http://drupal.org/node/550488#comment-1931780
A new check has been added to check that the boost_stats.php file/menu callback is in your robots.txt file. I got a report of that page getting crawled. This should take care of that. Simply add Disallow: /boost_stats.php on a new line inside your robots.txt file.

Bug Fixes:
#610498: Wrong URL is saved in access log
#610398: updating a node doesn't delete the cache file
#614836: Function _boost_set_time_limit undefined during upgrade
#615676: SHOW TABLES LIKE is not PostgreSQL compatible
#345484: 404 hits to /files directory cached as homepage with broken form actions - fixed in 6.x, still open for 5.x
#617826: Assignment instead of comparison in boost_cache_expire_derivative()
#617476: Page cached not flushed on new/updated comments
#617886: ETag Location
#459530: Define Assignment Error - Boost not clearing updated (or any!) pages from cache on cron.
#619934: CRON generates a "Page not Found" error...
#619914: foreach() wants arrays
#620636: On large node counts, boost_has_site_changed() can be very slow
#620648: Return 404 if browser/crawler directly hits boost-stats.php
#621148: "MySQL has gone away" error. Long running recursive rm of Boost flush cache causing MySQL connection to time out.
#621054: PHP Error thrown on E_NOTICE

Fix Regressions:
#610198: Allow flush button to del a file if not in database
#617314: Clear cached CSS and/or JS button
#620808: RTL issue using IE 6: Hidden iframe from Aggressive Gzip causing layout issues.

Feature Requests:
#609310: Optionally disable inserts on boost_cache table
#616404: Remove entries from boost_cache table if node is deleted or unpublished
#611700: Clear all cached pages with menus associated with a node on insert/update/delete
#619080: Status Block - Cleaner Output

Tasks:
#611162: HTML help integration for the advanced help module
#590134: Warn user on status page if running in safe mode.
#612326: Reword crawler error message on status page
#615406: Warn admin on status page if number of Dir's in any subdir of cache is above 31k
#613806: minimum cache expiration time should be called maximum cache expiration time
#617394: Verbose setting of 7 & 9 for debugging

Donate:

Known Issues:
#604950: Unknown column 'hash_url' in 'field list' - Run boost_update_6120 with a new install for temp fix.

Notes:
More bugfixes, biggest one being for RSS

Bug Fixes:
#601348: Rare Bug: Duplicate entry for key 2 query INSERT INTO boost_crawler (url, hash)
#601514: White screen of death after edit operation on nodes (without CCK module)
#601698: Hosting Issue: Apache serving pages not as utf-8
#603186: Ubercart shop orders become unavailable right after Boost module installation
#597156: RSS feed cache not getting reset on new content

Feature Requests:
#601086: Store hash of URL in the boost_cache_relationships table
#601334: let boost_has_site_changed() not set the max
#601826: Make new node & views expiration more efficient
#601836: Relationships Table: Add in full support for things other then views and make it semi auto discovering
#601838: Don't add relationship if self is the only thing being referenced.

Tasks:
#602048: Fix & add in validation for boost.admin.inc file
#602680: Allow for PHP & Drupal msgs to remove items from cache
#602944: Remove old define() calls

Donate:
Consider the amount of money this module saves, in comparison to a more expensive hosting solution. I (Mike Carper) accept Donations.

Known Issues:
#601112: No files cached, anonymous users get doubled page - If your using pressflow, this does not effect you.
Recommend you grab 1.11

Notes:
If you used hook_boost_preprocess() or set the pre-process function then the API has changed. Both have these variables passed to the function ($path, $data, $extension).
There are a lot of database updates in this release. If you previously set some custom expiration times for views, they might be lost in the update. The ones that can't be updated will be deleted; check output from boost_update_6117() for info (including the settings that got deleted). In short copy output from This setting needs to be re-set... as it will contain the deleted values.
One of the bug fixes has to do with the htaccess rules, suggest you update your rules.

Bug Fixes:
#592886: boost.pot is not up to date
#593788: Undefined constant line 1699
#594774: Crawler stopped on site with 1M pages queued to be cached. (6.x-dev 2009-09-27)
#596930: Pages cache control - Views: Page ID could be better
#597156: RSS feed cache not getting reset on new content
#598354: gzip + .htaccess
#598044: Boost Cache Status Block
#543840: Remove entries from boost_cache table if page returns 404 or 403

New Features:
#567650: Expire nodes based on CCK Node Reference
#598490: Be able to expire all views, but not all nodes; ect...
#453908: Hook for panel node types - expiration of static cache; panel containing multiple nodes - Views support added.
#600360: Option to flush or expire content.
#585518: Place boost tag inside the closing </html> tag - API changes went in, this is commented out.

Task:
#598658: Make boost_requirements() htaccess check file and current settings
#598942: _boost_get_menu_router() should use menu_get_item() instead of custom code
#594718: Increase efficiency of crawler: Bypass & URL alias options in crawler should be mutually exclusive.

Donate:

Boost 1.10

Notes:
I recommend updating your htaccess rules from the admin/settings/performance/boost-rules page. They now change based on the settings, means you only get what you need, thus a slightly faster Boost.
See past notes for any tips on upgrading from a previous version: boost 6.x-1.0, boost 6.x-1.01.

Security Update: Risk LOW
SA-CONTRIB-2009-068 - Boost - Filesystem Directory Creation
If you do not wish to update, use my contact form and tell me what version of boost your using and I will create the patch for you.

Bug Fixes:
#581850: Assign thread number to rouge threads or kill it.
#589180: Core & Boost cache enabled, nocache set; core caches page
#591098: Multisite setup wont start
#590704: I have no crawler action...
#590126: Provide option to avoid "Cannot Set Time Limit" in Php Safe Mode
#591560: Limit depth of _boost_mkdir_p function

New Features:
#585152: Exclude search404 page callback from being cached
#587212: Boost Admin UI Revamp: meta-issue
#577180: Flush cache: Voting API and Fivestar
#541658: Bypass cron expiration & load to be expired urls into crawler - This killer feature requires you to get the htaccess rules from the performance/boost-rules page. See note above.

Donate:

Known Issues:
#577578: boost_cron function failing, due to fsockopen() not respecting user given timeout value - Only if the crawler is enabled; depends on your server configuration, if this will effect you.
#585204: Pressflow + Boost is caching 404 pages

Notes:
If you have to run boost_update_6105 and below, I recommend flushing the boost cache after running the database updates. If you have to run boost_update_6106 and above you don't need to flush the boost cache. Upgrading your htaccess rules is always a good idea, grab them at the bottom of the admin/settings/performance/boost page.

Bug Fixes:
#572108: Hosting Issue: ini_restore() has been disabled for security reasons, boost.module on line 2520 (PHP <= 5.1.6 bug)
#572348: css/js files not being copied if drupal not in subdir
#572536: allow_url_fopen is disabled; use mod of drupal_http_request()
#575260: If cron fails, crawler sleep for 10 seconds for a very long time...
#575250: hook_boost_preprocess Isn't Invoked Correctly
#571126: Update README.txt to notice 'subdirectory installation issue'
#575466: Port crawler code to stats

Steps to 1.0
#326515: Roadmap For stable 6.x-1.0

Looking for ideas for a potential boost 2.0
http://drupal.org/node/563576

Consider the amount of money this module saves, in comparison to a more expensive hosting solution. I (Mike Carper) accept Donations.

Due to a regression in RC3, here is RC4! Please read what's new for RC3.

Known Bugs:
#567690: typo in htacceess rules

Bug's Fixed:
#564914: New Install, crawler key missing
#564990: divide by zero error if looking at performance/boost page right after crawler starts
#565640: Cache only the listed pages not working - This is why there's a new release today!

Still looking for ideas for a potential Boost 2.0
http://drupal.org/node/563576

Diff from rc1 was a semi random bug in the crawler. Bug taken care of by using a random number ;) (see #538460: Auto Regenerate Cache (pre-caching) Preemptive Cron Cache - throttle & crawl rate stats for details)

This release fixes a bunch of issues
#513924: Cache not expired if edit managed directly from content list
#513860: Wrong redirect after user registration.
#518288: Array issues
#519354: boost_cache_write() overwriting cached gzip files
#459956: Flush front page when node is edited/created with promote to front page selected.
#525494: boost_stats.php undefined index on line 77
#512314: premature cache flush when cron run via poormanscron 1.0; latest poormanscron dev fixes issue.
#530572: PHP Notice: Undefined index: HTTP_USER_AGENT on line 85
#482000: %{DOCUMENT_ROOT} not set correctly on Mosso hosting.
#530772: Work with Pressflow drupal
#531100: Add verbose setting for watchdog messages
#507412: Usability: "Reset boost database" button is unclear
#539494: Panel tables & _boost_get_menu_router()

Adds in these new features
#503628: AJAX Load stats
#512298: Cache JSON AJAX Objects
#514156: disable clean url's for all logged in users; allow for browser to cache pages.
#453426: Merge Cache Static into boost - Create GUI for database operations
#538418: Add url field to DB
#453908: Hook for panel node types - expiration of static cache; panel containing multiple nodes - Terms done.
#538460: Auto Regenerate Cache (pre-caching) Preemptive Cron Cache - throttle & crawl rate stats - Multi threaded cron based site crawler.

Note:
To use the new caching of AJAX/JSON (ajax views, ect...) you need to update your rewrite rules. This is experimental since some modules out there use ajax to submit content, and that might be an issue (if they use a GET).

Next release should be RC1!

What's In beta2:
#481654: Invalid argument for foreach on boost.module line 513
#223610: Race condition in cache file creation
#480182: subdir installs and boost_is_cacheable()
#477848: Difficulties w/ Boost 6.x1.0-alpha4 - Multi-site, Folder Permissions - _boost_rmdir_rf() - Better multi-site support, smarter cache expire, new error check on status page.
#182686: Static Feed Caching - Also Fixed a bug with url aliases & subdir installs
#428942: AHAH update textarea for .htaccess rules on performance >> boost page. - Performance page generates multiple rule sets
#204174: Work with page cache, not instead of it
#453426: Merge Cache Static into boost - Create GUI for database operations - Boost now controls cache expiration by 2 database tables
#493842: Option to not cache pages with url variables in them.
#368366: Boost Block - Button: Flush Page's Cache
#495038: Cannot enable the module (Module stays Disabled)
#493764: 600 File Permissions
#413908: Cache js/css files, allow for a "static" site
#422620: Support Drupal's built in statistics module.

Run update.php!

New Rewrite Rules

They are needed since Boost can (if you enable it) cache xml, css & js files and serve them gzipped if the client supports it.

Statistics Module Almost Fully Supported

Copy boost_stats.php into your root dir. File can be found in boost/stats dir. Uses a 1px transparent gif to pass info to boost_stats.php which then puts the info into the correct database tables via a DB Drupal Bootstrap. Javascript needs to be enabled on the client in order to get referrer. 3rd party add-ons for Drupal's base statistics package are not currently fully supported; they will be added in per request.

Fix for people upgrading from previous 6.x versions of boost. Old symlinks where interfering with the creation of files.
#451630: Many log entries with boost - stale symlinks
#337364: _boost_rmdir_rf doesn't delete symlinks

See the release notes from alpha3 for more info on upgrading from previous 6.x versions of boost.
http://drupal.org/node/451224

You Must Clear The Cache After Upgrading! Cache can be cleared by going to admin/settings/performance and pressing the Clear cached data button at the bottom of the page.