September 2016
Intermediate to advanced
270 pages
5h 16m
English
Content preview from Mastering PHP Design PatternsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Asynchronous queueing
Message queues provide an asynchronous communication protocol. In an asynchronous communication protocol, the sender and the receiver need not interact with the message queue simultaneously.
Typical HTTP, on the other hand, is a synchronous communication protocol, meaning that the client is blocked until the operation is completed.
Consider this; you call someone on the phone, then you wait for the phone to ring and the person you talk to listens to whatever you have to say then and there. At the end of the communication you say goodbye and that is acknowledged by someone on the other end saying goodbye back. This can be considered synchronous as you don't do anything until you get a response from the person you're communicating ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.