failsafe load dlls

add user config queue offsets
throttle improvements

Azaion.CommonSecurity/Services/Cache.cs

@@ -0,0 +1,27 @@
+using LazyCache;
+
+namespace Azaion.CommonSecurity.Services;
+
+public interface ICache
+{
+    T GetFromCache<T>(string key, Func<T> fetchFunc, TimeSpan? expiration = null);
+    void Invalidate(string key);
+}
+
+public class MemoryCache : ICache
+{
+    private readonly IAppCache _cache = new CachingService();
+
+    public T GetFromCache<T>(string key, Func<T> fetchFunc, TimeSpan? expiration = null)
+    {
+        expiration ??= TimeSpan.FromHours(4);
+        return _cache.GetOrAdd(key, entry =>
+        {
+            var result = fetchFunc();
+            entry.AbsoluteExpirationRelativeToNow = expiration;
+            return result;
+        });
+    }
+
+    public void Invalidate(string key) => _cache.Remove(key);
+}