| cIdempotentConsumer | Identifies messages that have already been sent to the receiver and eliminates them. Messages are still sent by the sender but are ignored by the receiver at the delivery stage. |
| cMessageFilter | Filters the content of messages according to the specified criterion and routes the filtered messages to the specified output channel. All messages that do not match the criteria will be dropped. |
| cMessageRouter | Creates different channels for each filtered message type according to specified conditions so that messages can later on be treated more accurately in each new channel. |
| cPipesAndFilters | Splits message routing into a series of independent processing stages. |