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Access host cache from tenant #2447

bozkan created 3 years ago

Hi,

Is it possible to access host cache from tenant via IDistributedCache?

ps: I cannot use IgnoreMultiTenancyAttribute for the cached type, because it is Identity Server's type and cache for the type: IdentityServer4.Models.Client

6 Answer(s)

0
maliming created 3 years ago
Support Team Fullstack Developer
hi

Can you try to switch the current tenant?

using (CurrentTenant.Change(tenantId)) { //IDistributedCache<IdentityServer4.Models.Client> Cache }

bozkan created 3 years ago

Hi maliming,

Thanks for the reply. The situation is:

using (CurrentTenant.Change(null))
{
    // GetAsync works on host! It gets cached item from host.
    var cachedClient = await _clientCache.GetAsync(identityClient.ClientId);

    cachedClient.Enabled = false;

    // But SetAsync does not work on host! It adds a new cached item under tenant folder on redis.
    // Instead of overwriting the item on host folder.
    await _clientCache.SetAsync(identityClient.ClientId, cachedClient, new DistributedCacheEntryOptions
    {
        AbsoluteExpirationRelativeToNow = _identityServerOptions.Caching.ClientStoreExpiration
    },
    considerUow: true);
}

0

maliming created 3 years ago
Support Team Fullstack Developer

Can you try considerUow: false
0

bozkan created 3 years ago

Yeap. When considerUow: false, it works!

What is the reason of this behavior? Should I give up on considerUow? But I need it, because I execute this cache update together with some database operation .

maliming created 3 years ago

Support Team Fullstack Developer

You can create a new unit of work.


using (CurrentTenant.Change(null))
{
    using (var uow = _unitOfWorkManager.Begin(
        requiresNew: true
    ))
    {
        // GetAsync works on host! It gets cached item from host.
        var cachedClient = await _clientCache.GetAsync(identityClient.ClientId);
    
        cachedClient.Enabled = false;
    
        // But SetAsync does not work on host! It adds a new cached item under tenant folder on redis.
        // Instead of overwriting the item on host folder.
        await _clientCache.SetAsync(identityClient.ClientId, cachedClient, new DistributedCacheEntryOptions
        {
            AbsoluteExpirationRelativeToNow = _identityServerOptions.Caching.ClientStoreExpiration
        },
        considerUow: true);
            
        await uow.CompleteAsync();
    }
}