MessageEvictionStrategy (ActiveMQ :: Broker 5.17.3 API)

All Known Implementing Classes:

MessageEvictionStrategySupport, OldestMessageEvictionStrategy, OldestMessageWithLowestPriorityEvictionStrategy, UniquePropertyMessageEvictionStrategy
```
public interface MessageEvictionStrategy
```
A strategy for evicting messages from slow consumers.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.apache.activemq.broker.region.MessageReference[]`	`evictMessages(LinkedList messages)`	Find the message reference in the given list with oldest messages at the front and newer messages at the end
`int`	`getEvictExpiredMessagesHighWatermark()`	REturns the high water mark on which we will eagerly evict expired messages from RAM

- Method Detail
  - evictMessages
```
org.apache.activemq.broker.region.MessageReference[] evictMessages(LinkedList messages)
                                                            throws IOException
```
    Find the message reference in the given list with oldest messages at the front and newer messages at the end
    
    Returns:
    
    the message that has been evicted.
    
    Throws:
    
    IOException - if an exception occurs such as reading a message content (but should not ever happen as usually all the messages will be in RAM when this method is called).
  - getEvictExpiredMessagesHighWatermark
```
int getEvictExpiredMessagesHighWatermark()
```
    REturns the high water mark on which we will eagerly evict expired messages from RAM