RABBITMQ's Task distribution

The direct distribution mechanism distributes the task to the specified queue,work based on the distribution keyword (routing_key) and only needs to listen to the corresponding queue, and in the code, it needs to set the corresponding Routing_key

Fanout mechanism instead, he will distribute the task to all the queue

Fanout mode:

emit_log.py

# -*- coding: utf-8 -*-import pikaif __name__ ==  ' __main__ ':     connection = pika. Blockingconnection (Pika. Connectionparameters ("localhost"))     channel = connection.channel ()      channel.exchange_declare (exchange= "Logs2", type= "direct")     message =   "you are awsome!"     for i in range (0, 100):  #  Loop 100-time Send Message          if i%2==0:             channel.basic_publish (exchange= "Logs2",  routing_key= ' even ',  body=message +   " "  + str (i),)         else:             channel.basic_publish (exchange= "Logs2",  routing_key = ' old ', body=message +  "  " + str (i),)     print " sending  ", message      #两个receive_log   will receive the task

receive_log.py

pika__author__ = Callback (,,, body): body__name__ = =: Connection=pika. Blockingconnection (Pika. Connectionparameters ()) Channel=connection.channel () channel.exchange_declare (=,=) Result=channel.queue_declare (= ) Queue_name=result. Queue, Queue_name channel.queue_bind (=,=queue_name) channel.basic_consume (callback,=queue_name,=) Channel.star T_consuming ()

receive_log2.py

pika__author__ = Callback (,,, body): body__name__ = =: Connection=pika. Blockingconnection (Pika. Connectionparameters ()) Channel=connection.channel () channel.exchange_declare (=,=) Result=channel.queue_declare (= ) Queue_name=result.method.queue, Queue_name channel.queue_bind (=,=queue_name) Channel.basic_consume (callback, =queue_name,=) channel.start_consuming ()

You can see that all two jobs are receiving all the messages.

Direct mode:

The work code only needs to change the type in the above code to type= "direct" and bind different exchange.

pika__author__ = __name__ = =: Connection = Pika. Blockingconnection (Pika.            Connectionparameters ()) channel = Connection.channel () channel.exchange_declare (=,=) message = I (,): i%==:    Channel.basic_publish (=, =, =message + + (i),): channel.basic_publish (=, =, =message + + (i),) , message

receive_even_log.py

pika__author__ = Callback (,,, body): body__name__ = =: Connection=pika. Blockingconnection (Pika. Connectionparameters ()) Channel=connection.channel () channel.exchange_declare (=,=) Result=channel.queue_declare (= ) Queue_name=result. Queue, Queue_name channel.queue_bind (=,=queue_name,=) channel.basic_consume (callback,=queue_name,=) channel.st Art_consuming ()

receive_old_log.py

pika__author__ = Callback (,,, body): body__name__ = =: Connection=pika. Blockingconnection (Pika. Connectionparameters ()) Channel=connection.channel () channel.exchange_declare (=,=) Result=channel.queue_declare (= ) Queue_name=result.method.queue, Queue_name channel.queue_bind (=,=queue_name,=) Channel.basic_consume (Callbac k,=queue_name,=) channel.start_consuming ()

As seen from the results: The task was distributed only to the corresponding queue

RABBITMQ's Task distribution