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Troubleshooting

Last updated on
30 April 2025

Troubleshooting

Problem Solution
Error: Failed to set key: Failed to set key: cache_page-...... Upgrade your PECL library to PECL package (2.2.1) (or higher).
Warning: Zlib compression at the php.ini level conflicts with Memcache.

 See http://drupal.org/node/273824
Cache isn't flushed correctly. PECL memcache 3.0.4 has a known bug that causes wildcard flushes to fail.
PECL memcache 3.0.6 has a known bug that causes repeat gets to the same property to fail.
Update to the latest (at least 3.0.8) PECL memcache package.
You'll be affected from this bug if you use Ubuntu Lucid or Debian 6.
To update Ubuntu-Lucid proceed like that: 
sudo apt-get install php-pear
sudo apt-get build-dep php5-memcache
sudo pecl install memcache-3.0.8
sudo /etc/init.d/apache2 restart

See also https://drupal.org/node/1806120

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