AWS serverless stack in a nutshell
Natacha Fernandez

Fun trick: you can call lambda functions from CloudWatch events and SNS topics, allowing you to do cool infra tricks. F.ex at eSpark Learning we have an internal service with wild swings in usage, so it’s either running on one instance or twenty of them. Whenever we scale up, it triggers a lambda that scales up our Dynamo usage so that we’re only paying for the spikes, as opposed to all of the time.

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