autoscaling

This question is about Google App Engine quotas and instances. I deployed a GAE app without specifying any specific scaling algo. From their docs, it seems like the default is auto-scaling. So when do they scale the app to another instance, i.e. when exactly does a new instance spawn? What request/s causes the second instance to get started and traffic to be split? Actually it is fairly well explained. From Scaling dynamic instances : The App Engine scheduler decides whether to serve each new request with an existing instance (either one that is idle or accepts concurrent requests), put the

Autoscaling helps you to automatically add or remove compute engines based on the load. The prerequisites to autoscaling in GCP are instance template and managed instance group. This question is a part of another question's answer , which is about building an autoscaled and load-balanced backend. I have written the below answer that contains the steps to set up autoscaling in GCP. Lakshman Diwaakar Autoscaling is a feature of managed instance group in GCP. This helps to handle very high traffic by scaling up the instances and at the same time it also scales down the instances when there is no

Is there a way do do dynamic elasticity in Windows Azure? If my workers begin to get overloaded, or queues start to get too full, or too many workers have no work to do, is there a way to dynamically add or remove workers through code or is that just done manually (requires human intervention) right now? Does anyone know of any plans to add that if its not currently available? There's a Service Management API, and you can use that to scale your application (from code running in Windows Azure or from code running outside of Windows Azure). http://msdn.microsoft.com/en-us/library/ee460799.aspx

We are trying to use Elastic Load Balancing in AWS with auto-scaling so we can scale in and out as needed. Our application consists of several smaller applications, they are all on the same subnet and the same VPC. We want to put our ELB between one of our apps and the rest. Problem is we want the load balancer to be working both internally between different apps using an API and also internet-facing because our application still has some usage that should be done externally and not through the API. I've read this question but I could not figure out exactly how to do it from there, it does not

I would like to prevent EC2 instance termination by Auto Scaling feature if that instance is in the middle of some sort of processing. Background: Suppose I have an Auto Scaling group that currently has 5 instances running. I create an alarm on average CPU usage... Suppose 4 of the instances are idle and one is doing some heavy processing... The average CPU load will trigger the alarm and as a result the scale-down policy will execute. How do I get Auto Scaling to terminate one of the idle instances and not the one that is in the middle of the processing? Steffen Opel Update As noted by Ryan