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Redis distributed cache: add HybridCache usage signal #59543

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@mgravell mgravell commented Dec 18, 2024

We already use "DC" and "OC" markers on RESP connections to provide a non-intrusive signal that Distributed Cache and Output Cache are being used; since HybridCache is a feature on top of IDistributedCache, here we add an additional "HC" token to indicate that a RESP connection is being used for HybridCache.

We do this by using IServiceProvider (changing the internal RedisCacheImpl(...) constructors) to detect HybridCache as a service. We don't need it to be the official HybridCache specifically (as in .AddHybridCache()) - just that a HybridCache exists. There are no public API or dependency changes required.

Note: we will also want to backport this

@dotnet-issue-labeler dotnet-issue-labeler bot added the area-middleware Includes: URL rewrite, redirect, response cache/compression, session, and other general middlesware label Dec 18, 2024
@dotnet-policy-service dotnet-policy-service bot added the pending-ci-rerun When assigned to a PR indicates that the CI checks should be rerun label Dec 26, 2024
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/azp run

@dotnet-policy-service dotnet-policy-service bot removed the pending-ci-rerun When assigned to a PR indicates that the CI checks should be rerun label Dec 26, 2024
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Azure Pipelines successfully started running 3 pipeline(s).

@dotnet-policy-service dotnet-policy-service bot added the pending-ci-rerun When assigned to a PR indicates that the CI checks should be rerun label Jan 3, 2025
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mgravell commented Jan 9, 2025

/azp run

@dotnet-policy-service dotnet-policy-service bot removed the pending-ci-rerun When assigned to a PR indicates that the CI checks should be rerun label Jan 9, 2025
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Azure Pipelines successfully started running 3 pipeline(s).

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