January 2019
Intermediate to advanced
490 pages
15h 37m
English
Content preview from Serverless Programming Cookbook
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Waiting for asynchronous operations
The CLI commands create-table, update-table, and delete-table are asynchronous operations. The control returns immediately to the command line, but the operation runs asynchronously.
To wait for table creation, you can use the aws dynamodb wait table-exists --table <table-name command, which polls the table until it is active. The wait table-exists command may be used in scripts to wait until the table is created before inserting data. Similarly, you can wait for table deletion using the aws dynamodb wait table-not-exists --table <table-name command, which polls with describe-table until ResourceNotFoundException is thrown. Both the wait options poll every 20 seconds and exit with a 255 return code after ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.