Releases for Memcache API and Integration

Changes since 6.x-1.9:

This is the third and hopefully final release candidate before a stable 7.x-1.0 release.

Changes since 7.x-1.0-rc2:

Note that while this is a release candidate, session handling is not fully ported yet, there are documented major/critical bugs with core's own session handling so it's unlikely that session handling will be stable prior to 7.x-1.0 final. Testing and useful bug reports for session support welcome!

Changes since 7.x-1.0-beta4:

Changes since 7.x-0.0:

Use 7.x-0.x release like http://drupal.org/node/1222872, not this one.

This is a minor bug fix release for Drupal 7. It also introduces simpletests and a new (optional) memcache.module.

The 6.x branch has been the focus of development after regressions in the 6.x-1.5 and 6.x-1.6 releases, and not everything is applied to Drupal 7, this is the main reason this is a beta rather than a release candidate.

#293902: Pretty graphs for memcache by Jeremy: Pretty graphs for memcache. Cleaned up the admin statistics to provide more useful data, while still retaining the raw data. Added support for drilling down into the individual slab cache entries, has its own permission as this locks up the memcache server and should not be used on a production website. Fixed display of memcache items, and link individual slabs to cachedump path.
#319697: file uploads file when memcache statistics are written to page footer - easy fix by ultimike, jaydub, Jeremy: Don't break uploads when memcache_admin stats are enabled, and other related fixes.
#585748: sess_write() broken on login when using Pressflow by bl444137: sess_write broken on login when using Pressflow.
#616282: Fatal error opening required theme.inc in content.module by dalejung, DamienMcKenna, jeremy, longwave, robertDouglass: Fatal error opening required theme.inc in content.module.
#791888: sess_destroy_sid() does not remove the session cookie from the user's browser by catch: sess_destroy_sid() does not remove the session cookie from the user's browser.
#822316: receiving a PHP notice "Connection reset by peer .... dmemcache.inc on line 104" by bleen18, cache, Jeremy: Consistently support persistent or non-persistent connections, fixing connection reset by peer errors.
#885478: Improve Memcache as installation profile friendly by hswong3i: allow memcache_admin to be included in install profiles without memcache already being configured.
#995758: PHP Fatal error: Call to a member function increment() on a non-object by valthebald: Call to a member function increment() on a non-object.Issue #1128114 by catch: expand test coverage.
#907614: Allow a choice of extension (and default to memcache due to bugs in memcached) by catch, David Strauss: Consistently use same PECL extension when serving pages, default to 'memcache', make configurable via settings.php.

The 7.x-1.0-beta2 memcache module was released prematurely, and resulted in a serious performance regression. The 7.x-1.0-beta3 release fixes this performance regression.

Fixes DRUPAL-SA-CONTRIB-2010-098.

Changes since DRUPAL-5--1-9:

• #925096 by robertDouglass: Fixed Use of REQUEST_TIME improper, incomplete.
• Updating README requirements
• Tweaking stats and sessions.

This release offers two major new features: It is now possible to flush only part of a bin within memcache (meaning that you no longer have to configure multiple bins), and the memcache module now supports both the older memcache PECL extension, and the newer memcached PECL extension. Your PECL extension is automatically detected, no configuration is necessary.

Features:

#493448: Memcache and cache_clear_all wildcard
#775498: Support use of PECL memcached
Bugs:

Beta release of the memcache module for Drupal 7.

This is primarily a direct port of the memcache module from Drupal 6 to Drupal 7. This version of the module supports the newer memcached PECL extension as well as the older memcache PECL extension.

Still known to not work:

• Sessions in memcache (memcache-session.inc)
• Database-backed memcache caching (memcache.db.inc)

No changes since 6.x-1.4-rc1.

Changes since 6.x-1.2:

• Feature #295738: cache stampede protection for items with a ttl.
• Feature #362944: support minimum cache lifetime when using memcache.inc.
• Bug #374527: load dmemcache.inc from memcache-session.inc.
• Bug #441842: implement sess_destroy_uid() in memcache-session.inc.

Changes since DRUPAL-6--1-1:

• #354420 by andreiashu, jojje: update README to emphasize that a separate memcache server is required for sessions.
• #362502 by mmcdougall and jvandyk: correctly update session memcache when data has been cleared from session

First release for Drupal 6.

Now supports Drupal 6's block and page cache flushes.

If using memcache.db.inc and memcache is offline, memcache cache retrieval is tried for only the first retrieval within a request.

memcache-session.inc now supports Drupal 6's session_save_session, which allows temporary disabling of writing session data.

See issues with wildcard cache flushes: http://drupal.org/node/224772

- #247306 correct % of memory used statistic
- #286322 by Souvent22: Drupal 5.8 patch.
- #256080 by jaydub: fix hook_install to not use db_add_column in hook_install. Tested on MySQL. PostgreSQL users look after yourselves
- #273824 reported by bennos Zlib compression conflicts with memcache.
- added Drupal 5.7 core cache serialization patch to 5.x branch.
fixes issue #226672 - Serialize patch needed for 5.7
- #186332 by firebus; memcache wasn't matching core behavior on cache_clear_all
- Patches for blockcache and user_relationships

http://drupal.org/cvs?commit=77021 missing memcache_clone
http://drupal.org/cvs?commit=79316 clear cache on install

• Added admin/settings/memcache page to turn per-page memcache statistics on or off globally.
• Removed user_access call from hook_init... that function isn't available in the init phase of bootstrapping.

Critical error in memcache_admin code introduced in 1.1 release.

1. documenting the 'memcache_key_prefix' variable that can be set in if more than one Drupal instance is to share memcache
2. rob discovers hook_devel_cache and promptly simplifies the install and uninstall hooks for memcache.
3. Adding a TROUBLESHOOTING section to README.txt
4. session handling doesn't work right. I'm removing it for now in advance of a 1.0 release
5. #154247 by chx and robertDouglass: clone objects going into memcache
6. #154287 by chx: no table locking

This is the first public (beta) release of the Memcache module. The admin stats still need a lot of work and patches are welcome. The basic machinery should be working well, however. Installation documentation needs some love.