tests and configuration for sessionBackupAsync about memcached-session-manager HOT 1 CLOSED

Done.

Now the session manager has two new properties:


* sessionBackupAsync:

Specifies if the session shall be stored asynchronously in memcached
as {@link MemcachedClient#set(String, int, Object)} supports it. If this is
false, the timeout set via setSessionBackupTimeout is evaluated.

Notice: if the session backup is done asynchronously, it is possible that a 
session
cannot be stored in memcached and we don't notice that - therefore the session 
would
not get relocated to another memcached node.

By default this property is set to false - the session backup is performed 
synchronously.



* sessionBackupTimeout

The timeout in milliseconds after that a session backup is considered as beeing 
failed.

This property is only evaluated if sessions are stored synchronously
(set via setSessionBackupAsync).

The default value is 100 (millis).