Mongo::getSlave

(PECL mongo >=1.1.0)

Mongo::getSlave — Returns the address being used by this for slaveOkay reads

说明

public string Mongo::getSlave ( void )

This finds the address of the slave currently being used for reads. It is a read-only method: it does not change anything about the internal state of the object.

When you create a connection to the database, the driver will not immediately decide on a slave to use. Thus, after you connect, this function will return NULL even if there are slaves available. When you first do a query with slaveOkay set, at that point the driver will choose a slave for this connection. At that point, this function will return the chosen slave.

See the query section of this manual for information on distributing reads to slaves.

参数

此函数没有参数。

返回值

The address of the slave this connection is using for reads.

This returns NULL if this is not connected to a replica set or not yet initialized.