RabbitMQ in 100 Seconds — Transcript

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1. 0:00rabbit mq an open source distributed
2. 0:02message broker that works like a post
3. 0:04office in the cloud it was developed in
4. 0:062007 and written in the erlang
5. 0:09programming language which itself is
6. 0:10famous for powering the open telecom
7. 0:12platform in the beginning apps were
8. 0:14built as monoliths with all concerns
9. 0:16coupled together on a single runtime the
10. 0:18problem is that not everything scales in
11. 0:20parallel differing computational needs
12. 0:22gave rise to the microservice
13. 0:24architecture where every concern has its
14. 0:26own run time that scales independently
15. 0:28rabbitmq is a tool that allows these
16. 0:30microservices to communicate
17. 0:31asynchronously with a variety of
18. 0:33different protocols for example you may
19. 0:35have an app that applies deep learning
20. 0:37photo filters when the user clicks a
21. 0:38button that request goes to a rest api
22. 0:41but instead of processing the image
23. 0:42there it produces a message with the
24. 0:44required data and publishes it to an
25. 0:46exchange the exchange is then
26. 0:48responsible for routing it to one or
27. 0:50more queues which are linked to the
28. 0:51exchange with a binding and routing key
29. 0:54now the message sits in the queue until
30. 0:56it's handled by the consumer which in
31. 0:57this case would be the image processing
32. 0:59server the exchange can route directly
33. 1:01to a specific queue or to multiple cues
34. 1:03with a shared pattern using topics or to
35. 1:06every queue it knows about with fanout
36. 1:07the end result is an architecture that
37. 1:09allows servers to both publish and
38. 1:11subscribe to data thanks to the rabbitmq
39. 1:13middleman to get started install it or
40. 1:15run it in a docker container on port
41. 1:175672 it also contains a cli tool to
42. 1:21manage and inspect your broker now
43. 1:23create a file in your favorite server
44. 1:24side language and bring in a library
45. 1:26that implements a messaging protocol
46. 1:28like advanced messaging queue protocol
47. 1:30091 this file will send a message and
48. 1:33first needs to connect to rabbitmq on
49. 1:35that connection we can use the create
50. 1:37channel method to declare a cue which
51. 1:39can be named whatever you want cues can
52. 1:40be durable where the metadata is stored
53. 1:42on disk or transient where it's only
54. 1:44stored in memory and now produce a
55. 1:46message by sending a buffer to that
56. 1:48queue go ahead and run the file to
57. 1:49create the queue and send the message
58. 1:51then create another file to receive the
59. 1:52message in real life this could be a
60. 1:54different server on the other side of
61. 1:55the world connect to rabbitmq just like
62. 1:58we did for the publisher then reference
63. 1:59the same queue name on that connection
64. 2:01now use the consume method to receive a
65. 2:03message and run a callback function with
66. 2:05its data now run that file in a separate
67. 2:07terminal to receive the message that's
68. 2:09how a basic queue works but we could
69. 2:10expand on this code by creating an
70. 2:12exchange to manage multiple queues at
71. 2:14the same time a fan out or topic
72. 2:16exchange would allow multiple servers to
73. 2:18subscribe to the same messages but
74. 2:20consume them at different times this has
75. 2:22been rabbitmq in 100 seconds hit the
76. 2:25like button if you want to see more
77. 2:26short videos like this thanks for
78. 2:27watching and i will see you in the next
79. 2:29one