Exception when seeding policy store with distributed SQL Server cache in 3.0.2

[johansme]

The SeedAsync method of the DistributedCacheIpPolicyStore and the DistributedCacheClientPolicyStore both call the SetAsync method of the DistributedCacheRateLimitStore with only the id and entry parameters set.
This means that the IDistributedCache's SetStringAsync method is called with the options (third) parameter set to null.
However, when using a DistributedSqlServerCache as the IDistributedCache, this null argument is propagated to the SetAsync method, where it throws an ArgumentNullException. In other words, seeding the policy store can never succeed when the distributed cache is an SQL Server cache.

[cristipufu]

Hi @johansme, thanks for reporting this.

Indeed, it seems there's a null parameters check:

1. RedisCache
2. SqlServerCache