Hi Alex,

You can refresh the Umbraco memory cache programmatically by using the DistributedCache service. Here’s a simple example:

using Umbraco.Cms.Core.Cache;
public class CacheHelper{
    private readonly DistributedCache _distributedCache;
    public CacheHelper(DistributedCache distributedCache)
    {
        _distributedCache = distributedCache;
    }
    // Method to refresh all published snapshots in the distributed cache, effectively refreshing the memory cache.
    public void RefreshMemoryCache()
    {
        _distributedCache.RefreshAllPublishedSnapshot();
    }}

Hope this is what you are looking for.