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Advanced Serverless Architectures with Microsoft Azure

You're reading from   Advanced Serverless Architectures with Microsoft Azure Design complex serverless systems quickly with the scalability and benefits of Azure

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Product type Paperback
Published in Feb 2019
Publisher Packt
ISBN-13 9781788479127
Length 278 pages
Edition 1st Edition
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Daniel Bass Daniel Bass
Author Profile Icon Daniel Bass
Daniel Bass
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Serverless Queues


One of the most useful components in scaling a serverless architecture is the queue. Queues are a key asynchronous processing concept. In a queue, data points are added to the back of the queue and taken from the front. An example of this is a first-in-first-out data structure. In a cloud architecture, a queue will generally store events or messages from an upstream process until subscribers downstream have the time to process them.

An important thing to understand before deciding to use a queue is the compromise you are making in using one. In a synchronous operation (that is, inserting a record into a database all in one operation), if something goes wrong, you have instant feedback to your user. In an asynchronous operation (that is, dropping an event onto a queue that a worker later picks up to insert into the same database), if the later operations go wrong, then the user has usually left the application and cannot fix their mistake or call support.

A good way to try...

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