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Added warning when using Redis to store Data Protection keys #36219

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Merged
merged 3 commits into from
Nov 7, 2025
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Added warning when using Redis to store Data Protection keys #36219

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c5939e4
Add warning when using Redis to store Data Protection keys
wcabus Oct 15, 2025
e9277a4
Fix link formatting for Azure Managed Redis documentation
wcabus Oct 15, 2025
74afd55
Update ms.date for key storage providers documentation
wadepickett Nov 7, 2025
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6 changes: 6 additions & 0 deletions aspnetcore/security/data-protection/implementation/key-storage-providers.md
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Expand Up @@ -275,6 +275,12 @@ public void ConfigureServices(IServiceCollection services)

:::moniker-end

> [!WARNING]
> When using Redis to persist data protection keys, be aware that Redis doesn't persist data by default when restarting. This can cause Data Protection to issue new keys, invalidating previously protected data.
>
> You can configure Redis to enable data persistence to mitigate this: Redis documentation has information on [how to configure persistence](https://redis.io/docs/latest/operate/oss_and_stack/management/persistence/).
> If you're using [Azure Managed Redis](/azure/redis/how-to-persistence), ensure you have enabled data persistence. [Azure Cache for Redis](/azure/azure-cache-for-redis/cache-how-to-premium-persistence?tabs=premium) needs a premium or higher tier to enable data persistence.

For more information, see the following topics:

* [StackExchange.Redis ConnectionMultiplexer](https://github.com/StackExchange/StackExchange.Redis/blob/main/docs/Basics.md)
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