Releases for Memcache API and Integration

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
- #188751 by mdekkers, modified by roberDouglass: remove DUPLICATE KEY syntax from query.
- #215823 by nicholasThompson: improve admin area.
- Fixing issue #215814: Incorrect use of db_query in memcache.db.inc

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.
• rearranging and consolidating. memcache.module is now just a placeholder for its install hooks. To guarantee that it gets turned on, the memcache_admin module does indeed depend on it. All stats collecting is now in memcache_admin. The previous memcache_admin status page is now under admin/logs. There is a new admin/settings page for memcache to turn display of per-page stats on or off.
• updated documentation.
• #163277 by RobRoy use MEMCACHE_COMPRESSED instead of TRUE to flag compression.
• removing session files again. They accidentally jumped into the 1.3 release without my permission.

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.