CODEWITHSUNDEEP
google-app-engine
poy
poy

Reputation: 10547

Make a request to specific app engine instance

There is a way to do so in in cloud foundry and it was useful for a plethora of things. I was curious if app engine had a similar mechanism.

Upvotes: 1

Views: 295

Answers (1)

Dan Cornilescu
Dan Cornilescu

Reputation: 39834

Sending a request to a specific service instance is only possible in the standard environment and only if manual scaling is used.

From the standard environment Targeted routing:

If you are using manually-scaled services, you can target and send a request to a instance by including the instance ID. The instance ID is an integer in the range from 0 up to the total number of instances that are running, and can be specified as follows:

Sends a request to a specific service and version within a specific instance:

https://[INSTANCE_ID]-dot-[VERSION_ID]-dot-[SERVICE_ID]-dot-[MY_PROJECT_ID].appspot.com
http://[INSTANCE_ID].[VERSION_ID].[SERVICE_ID].[MY_CUSTOM_DOMAIN]

Note: Targeting an instance is not supported in services that are configured for auto scaling or basic scaling. The instance ID must be an integer in the range from 0, up to the total number of instances running. Regardless of your scaling type or instance class, it is not possible to send a request to a specific instance without targeting a service or version within that instance.

From the flexible environment Targeted routing:

Note: In the flexible environment, targeting an instance is not supported. It is not possible to send requests directly to a specific instance.

Upvotes: 5

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