How AWS AppSync handle subscription arguments behind the scenes?

Question

For security compliance, my team wonders how AWS AppSync handles subscription arguments behind the scenes.
* Are the arguments stored in the Appsync memory temporarily, and are they disposed of after disconnection and unsubscribing?
* Will it store the arguments indefinitely?

Your answer is appreciated.

nobledoh · Accepted Answer

Hey Ben,

To answer your first bullet point, yes, subscription arguments are handled temporarily while the subscription is active during the duration of the WebSocket connection. Once, the WebSocket connection is terminated, AppSync automatically disposes of the subscription arguments and any associated data.

The service doesn't store the arguments indefinitely; instead, they are held in memory for as long as they are required for active subscriptions.

Good luck with this service!

[Page 698](https://docs.aws.amazon.com/pdfs/appsync/latest/devguide/appsync-dg.pdf)

[Using subscriptions for real-time data applications in AWS AppSync](https://docs.aws.amazon.com/appsync/latest/devguide/aws-appsync-real-time-data.html)

How AWS AppSync handle subscription arguments behind the scenes?

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