MessageBuffer (ActiveMQ 5.17.0 API)

All Known Implementing Classes:

OrderBasedMessageBuffer, SizeBasedMessageBuffer
```
public interface MessageBuffer
```
Represents a collection of MessageQueue instances which are all bound by the same memory buffer to fix the amount of RAM used to some uppper bound.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`clear()`
`MessageQueue`	`createMessageQueue()`	Creates a new message queue instance
`int`	`getSize()`
`void`	`onSizeChanged(MessageQueue queue, int delta, int queueSize)`	After a message queue has changed we may need to perform some evictions

- Method Detail
  - getSize
```
int getSize()
```
  - createMessageQueue
```
MessageQueue createMessageQueue()
```
    Creates a new message queue instance
  - onSizeChanged
```
void onSizeChanged(MessageQueue queue,
                   int delta,
                   int queueSize)
```
    After a message queue has changed we may need to perform some evictions
    
    Parameters:
    
    delta -
    
    queueSize -
  - clear
```
void clear()
```