Error using Microsoft.Extensions.Caching.StackExchangeRedis.RedisCache 6.0.0

[davitgr]

After upgrading from .NET 5 to .NET 6, we are unable to write to the Redis cache using IDistributedCache.SetAsync in our WebAoi project. It works in in .NET 5 but not .NET 6. Below is the error message and also the code (_cache is IDistributedCache). Please advise, as this is breaking our application currently.

private async Task CacheSet(string key, object value, TimeSpan? expiration = null)
{
    await _cache.SetAsync(key, value.ToByteArray(),
        new DistributedCacheEntryOptions
        {
            AbsoluteExpirationRelativeToNow = expiration ?? _cacheExpiration
        }).ConfigureAwait(false);
}

2021-11-23 15:20:32.7672||ERROR|Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware|An unhandled exception has occurred while executing the request. ERR Error running script (call to f_3915ee22fda531a1d5661f2523d0443fd35ff0a4): @user_script:2: @user_script: 2: Wrong number of args calling Redis command From Lua script
2021-11-23 15:20:32.7750||ERROR|LoggerService.LoggerManager|Something went wrong: at Microsoft.Extensions.Caching.StackExchangeRedis.RedisCache.SetAsync(String key, Byte[] value, DistributedCacheEntryOptions options, CancellationToken token)

[mgravell]

OK. I can only speak on behalf of the SE-Redis library. Does that connect and work when used by itself? Very few of the things mentioned in the question seem directly related to the library, which makes it hard to comment.

[ISV-Kran]

Same here, SE-Redis work itself but there is some error while using it with asp net session

UPDATE: to fix update redis latest version https://redis.com/blog/redis-on-windows-10/ or https://github.com/tporadowski/redis/releases

[mgravell]

@ISV-Kran if you're saying that updating the server fixes this, then: it doesn't sound like a library issue

[NickCraver]

Updating this issue as well - see dotnet/aspnetcore#38715 for details, this was a break in v6 of the caching layer on top of us against older Redis servers. We're aiming to get a fix in there, since there's nothing StackExchange.Redis can do with this literal LUA script in play.

[NickCraver]

When dotnet/aspnetcore#38927 is merged and released, the latest .NET 6.0 should be working as expected on older servers again :)

[Joseph-Anthony-King]

Hi @NickCraver, I ran into this issue and reviewed the above ticket... I'm seeing that the status is still merged, is a release pending? Sorry if this question is academic but this is my first submission on an issue and I haven't tracked this before. Thank you

[mgravell]

@Joseph-Anthony-King that is completely out of our hands and influence. I was going to add "knowledge" to that list, but I had a look and could see no evidence of a point release on the public site. You would need to ask the owners.

[Joseph-Anthony-King]

Thank you @mgravell, I meant to direct this to the Nick who is on that team so sorry about the confusion... the question should have been asked on the branch he mentioned. I went ahead and asked the question there. Thank you for following up on this.

[NickCraver]

I'm going to close this on out to cleanup - for anyone following this will be resolved in the 6.0.2 package release of the upstream https://www.nuget.org/packages/Microsoft.Extensions.Caching.StackExchangeRedis package - releases are approximately monthly so you can read between the lines there :)