Issue #1014154: by pillarsdotnet, README.txt cleanup.

README.txt

@@ -12,22 +12,23 @@
 These are the broad steps you need to take in order to use this software. Order
 is important.
 
-1. Install the memcached binaries on your server. See 
-
-http://www.lullabot.com/articles/how_install_memcache_debian_etch
-
-2. Install the PECL memcache extension for PHP. This must be version 2.2.1 or 
-   higher or you will experience errors.
-3. Put your site into offline mode.
-4. Download and install the memcache module.
-5. If you have previously been running the memcache module, run update.php.
-6. Start at least one instance of memcached on your server.
-7. Edit settings.php to configure the servers, clusters and bins that memcache
-   is supposed to use.
-8. Edit settings.php to mke memcache the default cache class, for example:
-     $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
-     $conf['cache_default_class'] = 'MemCacheDrupal';
-9. Bring your site back online.
+ 1. Install the memcached binaries on your server. See for instance:
+      http://www.lullabot.com/articles/how_install_memcache_debian_etch
+ 2. Install the PECL memcache extension for PHP. This must be version 2.2.1 or 
+    higher or you will experience errors.
+ 3. Put your site into offline mode.
+ 4. Download and install the memcache module.
+ 5. If you have previously been running the memcache module, run update.php.
+ 6. Start at least one instance of memcached on your server.
+ 7. Edit settings.php to configure the servers, clusters and bins that memcache
+    is supposed to use.
+ 8. Edit settings.php to make memcache the default cache class, for example:
+      $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
+      $conf['cache_default_class'] = 'MemCacheDrupal';
+ 9. Make sure the following line also exists, to protect the special cache_form
+    bin from being assigned to a volatile cache storage implementation:
+      $conf['cache_class_form'] = 'DrupalDatabaseCache';
+10. Bring your site back online.
 
 For instructions on 1 and 2 above, please see the INSTALLATION.txt file that
 comes with the memcache module download.
@@ -64,7 +65,7 @@ The bin/cluster/server model can be described as follows:
 - Servers are memcached instances identified by host:port.
 
 - Bins are groups of data that get cached together and map 1:1 to the $table
-  param in cache_set(). Examples from Drupal core are cache_filter,
+  parameter of cache_set(). Examples from Drupal core are cache_filter,
   cache_menu. The default is 'cache'.
 
 - Clusters are groups of servers that act as a memory pool.
@@ -91,11 +92,12 @@ $conf = array(
 
 Here is an example configuration that has two clusters, 'default' and
 'cluster2'. Five memcached instances are divided up between the two
-clusters. 'cache_filter' and 'cache_menu' bins goe to 'cluster2'. All other
+clusters. 'cache_filter' and 'cache_menu' bins go to 'cluster2'. All other
 bins go to 'default'.
 
 $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
 $conf['cache_default_class'] = 'MemCacheDrupal';
+$conf['cache_class_form'] = 'DrupalDatabaseCache';
 $conf = array(
   'cache_default_class' = 'MemCacheDrupal',
   'memcache_servers' => array('localhost:11211' => 'default',
@@ -129,6 +131,7 @@ NOTE: Session.inc is not yet ported to Drupal 7.
 
 $conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
 $conf['cache_default_class'] = 'MemCacheDrupal';
+$conf['cache_class_form'] = 'DrupalDatabaseCache';
 $conf = array(
   'cache_default_class' = 'MemCacheDrupal',
   'session_inc' => './sites/all/modules/memcache/memcache-session.inc',