Magento : Solution of the 'Cache_dir' must be directory

Today i am sharing with you the solution for most common issue with magento store which is the Exception : cache_dir must be a directory.

To solve this problem follow these steps :

1) Open the php file at the path lib/Zend/Cache/Backend/File.php

2) Go to around line : 91
[php]
protected $_options = array(
'cache_dir' => 'temp/',
'file_locking' => true,
'read_control' => true,
'read_control_type' => 'crc32',
'hashed_directory_level' => 0,
'hashed_directory_umask' => 0700,
'file_name_prefix' => 'zend_cache',
'cache_file_umask' => 0600,
'metadatas_array_max_size' => 100
);
[/php]

3) Replace the above code with this one :

[php]
protected $_options = array(
'cache_dir' => 'path/from/root/var/cache/',
'file_locking' => true,
'read_control' => true,
'read_control_type' => 'crc32',
'hashed_directory_level' => 0,
'hashed_directory_umask' => 0700,
'file_name_prefix' => 'zend_cache',
'cache_file_umask' => 0600,
'metadatas_array_max_size' => 100
);
[/php]

This would definately solve your problem, Hope this will help some one
Happy coding :-)