Azure API policy for

Upasana Ghosh 346

i need to add the below cache response to the apim policy

MuthuKumaranMurugaachari-MSFT 22,141 Reputation points

2023-01-30T21:38:02.17+00:00

@Upasana Ghosh Thanks for posting it in Microsoft Q&A. I assume you are talking about Cache-Control Http Header (https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control) and want to add/modify these values in APIM policy. cache-store policy caches the responses whereas cache-lookup policy to perform cache lookup in APIM and these built-in policies cannot be directly used to set Cache-Control Http Header.
I am not sure what exactly scenarios you would like to add these headers, but if you are looking to read backend response, and set cache duration in the policy, the above referenced snippet is the right way to go.

Reference: https://learn.microsoft.com/en-us/azure/api-management/cache-store-policy#example-using-policy-expressions

For reading Cache-Control from backend response, use context.Response.Headers.GetValueOrDefault("Cache-Control","") and then set/modify header values like no-cache using set-header policy in the outbound section.

I hope this helps with your questions and let me know if you have any other.
Upasana Ghosh 346 Reputation points

2023-01-31T08:32:50.1333333+00:00

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Upasana Ghosh 346 Reputation points

2023-01-31T14:51:37.36+00:00

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MuthuKumaranMurugaachari-MSFT 22,141 Reputation points

2023-01-31T14:54:32.7266667+00:00

@Upasana Ghosh I see this question was already posted in different thread https://learn.microsoft.com/en-us/answers/questions/1165407/custom-cache-policy and will follow up with you there.