January 2017
Intermediate to advanced
258 pages
4h 53m
English
Content preview from Implementing DevOps on AWSBecome 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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Pre-warm ELBs if needed
On the subject of traffic spikes, while ELBs are impressively performant, there might be occasions where you will need to pre-warm them.
As you probably already know, an ELB is a collection of EC2 instances managed by AWS, running proprietary load balancing software.
An algorithm ensures that the number of ELB EC2 instances grows or shrinks in response to the traffic pattern of your application. This process of adaptive scaling is done based on averaged traffic measurements taken over time and as such is not very rapid.
To ensure that this feature does not become a problem, AWS allows you to request an ELB to be pre-warmed, that is to say, scaled-up ahead of time.
If you are on the premium support plan, you could probably wait ...
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