How to integrate fastly wasm service with existing vcl service using service chaining.

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ravi prakash Bajpai

• February 23, 2021 10:25

If we want to integrate a wasm service for any existing vcl based service, what needs to be done. is there any docs available for service chaining  (client --> VCL service  --> wasm service )

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  Elizabeth Ortiz

  • February 25, 2022 16:54

  Hi Ravi,

   

  I'm sorry we took so long to get back to you.

   

  To service chain a WASM service to your VCL, all that is needed is to add the WASM domain as an origin. You'll also have to reach out to support@fastly.com to enable the .bypass_local_route_table pragma and then add .bypass_local_route_table = true on your backend definition in VCL.

  Please note that service chaining changes the way you will be billed.

  You can take a look at our comprehensive document that covers service chaining in detail: https://developer.fastly.com/learning/concepts/service-chaining/#chaining-with-shielding-in-computeedge

   

   

  Kind regards,

  Elizabeth

  Fastly Customer Support 

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