April 2018
Intermediate to advanced
280 pages
6h 18m
English
Content preview from Google Cloud Platform Cookbook
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How it works...
When the user hits the endpoint URL of the load balancer, it transfers the request to one of the available instances under its control. A load balancer constantly checks for the health of the instance under its supervision. The URL to test for the health is set up using the Google Compute's health check.
The PHP applications running on both the instances are configured to use the same Cloud SQL database. So, irrespective of the request hitting Instance 1 or Instance 2, the data is dealt from the common Cloud SQL database.
Also, the Autoscaler is turned on in the Instance Group governing the two instances. If there is an increase in usage (CPU in our example), the Autoscaler will spawn a new instance to handle the increase ...