HybridCacheService now sets WriteSynchronouslyWhenQueueFull = false

This better tolerates multi-instance situations where writes can't happen without outright failing requests.

Author: lilith

src/Imageflow.Server.HybridCache/HybridCacheService.cs

@@ -22,7 +22,7 @@ public HybridCacheService(HybridCacheOptions options, ILogger<HybridCacheService
                 AsyncCacheOptions = new AsyncCacheOptions()
                 {
                     MaxQueuedBytes = Math.Max(0,options.QueueSizeLimitInBytes),
-                    WriteSynchronouslyWhenQueueFull = true,
+                    WriteSynchronouslyWhenQueueFull = false,
                     MoveFileOverwriteFunc = (from, to) => File.Move(from, to, true)
                 },
                 CleanupManagerOptions = new CleanupManagerOptions()
@@ -61,4 +61,4 @@ public Task<IStreamCacheResult> GetOrCreateBytes(byte[] key, AsyncBytesResult da
             return cache.GetOrCreateBytes(key, dataProviderCallback, cancellationToken, retrieveContentType);
         }
     }
-}
+}