Messenger! Queue work for Later

Name: Messenger! Queue work for Later
Price: 9 USD
Availability: InStock

5h 5m 31s

English

Paid

May 2, 2024

Symfony's Messenger component gives you a beautiful system for designing your code around "message" objects and decoupled "handlers" that do the work! ... wait... that's not right, it's really... Symfony's Messenger component gives you the power to execute code asynchronously via queues and workers!

Actually, it's both! Messenger is one of the newest parts of Symfony and we absolutely ❤️ it. In this tutorial, we'll create an important application that asynchronously adds our favorite cat (Ponka) to all of your favorite photos. Along the way, we'll learn to:

Create a messages classes
Add & configure "handler" classes that do the work
Dispatch messages through the bus
Configure "transports" for async messages
Route messages to transports
Execute "worker" processes that "consume" queued messages
Things fail!? Retry message and set up the "failure transport"
Middleware
Add & understand message stamps
Prioritized transports
A little CQRS: a Query bus
Testing & Dev: handling messages "sync"
Deployment and supervisor
RabbitMQ & AMQP

Let's get to work!

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#	Title	Duration
1	Installing Messenger	06:15
2	Message, Handler & the Bus	08:36
3	Doing Work in the Handler	06:33
4	Message, Handler & debug:messenger	05:52
5	Transport: Do Work Later (Async)	07:33
6	Worker Command	05:34
7	Problems with Entities in Messages	04:54
8	Passing Entity Ids inside of Messages	08:01
9	Dispatching a Message inside a Handler?	05:30
10	Partial Handler Failures & Advanced Routing	04:36
11	Envelopes & Stamps	06:24
12	Retrying on Failure	05:11
13	Retry Delay & Retry Strategy	04:41
14	The Failure Transport	05:37
15	Investigating & Retrying Failed Messages	05:42
16	Middleware	05:59
17	Tracking Messages with Middleware & a Stamp	05:31
18	Logger Channel Setup and Autowiring	05:27
19	Middleware Message Lifecycle Logging	07:48
20	High Priority Transports	05:41
21	Handling Messages Sync while Developing	05:54
22	Functional Test for the Upload Endpoint	09:23
23	Testing with the "in-memory" Transport	05:26
24	Deployment & Supervisor	09:08
25	Killing Workers Early & on Deploy	05:55
26	Events & Event Bus	05:23
27	Creating & Handling Events	07:55
28	Dispatching the Event & No Handlers	07:07
29	Messenger vs EventDispatcher	03:19
30	Doctrine Transaction & Validation Middleware	05:59
31	Event & Command Bus Organization	07:23
32	Query Bus	08:48
33	Advanced Handler Config: Handler Subscribers	07:59
34	Sending Handlers to Different Transports: from_transport	03:22
35	AMQP with RabbitMQ	07:22
36	AMQP Internals: Exchanges & Queues	08:11
37	AMQP Priority Exchange	07:16
38	Delaying in AMQP: Dead Letter Exchange	07:23
39	Exchange Routing and Binding Keys	06:39
40	Dynamic AMQP Routing Key (AmqpStamp)	07:51
41	Serializing Messages as JSON	06:41
42	JSON, Message Headers & Serializer Options	03:15
43	Setup for Messages from an Outside System	06:01
44	Transport for Consuming External Messages	05:51
45	Custom Transport Serializer	06:34
46	The Lifecycle of a Message & its Stamps	08:17
47	Graceful Failure in the Transport Serializer	04:48
48	Mapping Messages to Classes in a Transport Serializer	04:56