[Microsoft.Extensions.Caching.Hybrid] How to set distributed cache entries to not expire

[yauchow]

I'm looking at using a Hybrid Cache backed by a Redis database to use as a source for tenant catalog. My service registration looks like this:

services.AddHybridCache();
services.AddStackExchangeRedisCache(options =>
{
    options.Configuration = 
        configuration.GetConnectionString("TenantCatalog");
});

Then I add the initial catalog to the redis HybridCache cache using:

cache.GetOrCreateAsync<List<Tenant>>(
   TenantsCacheKey,
  _ => ValueTask.FromResult(new List<Tenant> {
// ... initial list of test data here
}))

If I peek into my Redis cache, it looks all good, I can see my list of test data tenants, except the TTL of the cache entry is only 4 minutes? How do I insert a cache entry so there is no TTL. I have tried adding a HybridCacheEntryOptions with Expiration set to NULL to the GetOrCreateAsync call, but this results in a TTL of 2 minutes.