de.otto.synapse.messagestore

Interface WritableMessageStore

All Superinterfaces:

java.lang.AutoCloseable, MessageStore

All Known Implementing Classes:

CompactingConcurrentMapMessageStore, CompactingInMemoryMessageStore, InMemoryMessageStore, InMemoryRingBufferMessageStore

public interface WritableMessageStore
extends MessageStore

A MessageStore that is capable to add messages.

When using a Message Store, we can take advantage of the asynchronous nature of a messaging infrastructure. When we send a message to a channel, we send a duplicate of the message to a special channel to be collected by the Message Store.

This can be performed by the component itself or we can insert a Wire Tap into the channel. We can consider the secondary channel that carries a copy of the message as part of the Control Bus. Sending a second message in a 'fire-and-forget' mode will not slow down the flow of the main application messages. It does, however, increase network traffic. That's why we may not store the complete message, but just a few key fields that are required for later analysis, such as a message ID, or the channel on which the message was sent and a timestamp.

See Also:

EIP: Message Store

Method Summary

Modifier and Type	Method and Description
void	add(Message<java.lang.String> message)

Methods inherited from interface de.otto.synapse.messagestore.MessageStore

close, getLatestChannelPosition, size, stream

Method Detail

add

void add(Message<java.lang.String> message)