com.aerospike.client.async

Class Throttles

java.lang.Object

com.aerospike.client.async.Throttles

public final class Throttles
extends Object

Use multiple throttles that enforce a limit on the maximum number of commands. Useful in sync scan/async touch situations where scan thread needs to slow down sending commands to event loops, so the event loop queues do not get overloaded. Warning: Do not wait for slots directly from event loop threads. Deadlock may occur in that situation.

Constructor Summary

Constructors

Constructor and Description
Throttles(int size, int maxCommandsPerEventLoop) Construct throttles.

Method Summary

Methods

Modifier and Type	Method and Description
void	addSlot(int index, int count) Recover slot(s) from commands that have completed.
int	getAvailable(int index) Get current number of commands that could be run for a throttle.
boolean	waitForSlot(int index, int count) Wait for a throttle's command slot(s).

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Throttles

public Throttles(int size,
         int maxCommandsPerEventLoop)

Construct throttles.

Method Detail

waitForSlot

public boolean waitForSlot(int index,
                  int count)

Wait for a throttle's command slot(s).

Parameters:

index - array index

count - count of commands to reserve

Returns:

if command should be processed

addSlot

public void addSlot(int index,
           int count)

Recover slot(s) from commands that have completed.

Parameters:

index - array index

count - count of commands to reclaim

getAvailable

public int getAvailable(int index)

Get current number of commands that could be run for a throttle.