Reorganize backend to mirror Musify.slnx folder structure

Moves the six backend projects on disk into Core/ and Hosts/ subfolders, matching the solution folders already defined in Musify.slnx, so the file explorer reflects the same layout as the solution: backend/Core/Musify.Domain backend/Core/Musify.Application backend/Core/Musify.Infrastructure backend/Hosts/Musify.Api backend/Hosts/Musify.Worker backend/Hosts/Musify.StreamingGateway Updates every reference to the old paths: ProjectReference entries in Musify.Api.csproj and Musify.Worker.csproj, the three Dockerfiles, deploy/scripts/migrate.ps1|sh, deploy/zitadel/provision.ps1, deploy/up.ps1, deploy/README.md and docs/development.md. Also fixes a stale Dockerfile comment pointing at a compose file that no longer exists. Verified with `dotnet build Musify.slnx` against the new layout.
2026-09-09 14:27:50 +02:00
parent d867a60126
commit 89569736b7
369 changed files with 41 additions and 41 deletions
@@ -0,0 +1,41 @@
+using System.Collections.Concurrent;
+using ErrorOr;
+using Microsoft.Extensions.Caching.Memory;
+
+namespace Musify.Infrastructure.Services
+{
+    public sealed class SingleFlightCache(IMemoryCache cache)
+    {
+        private readonly ConcurrentDictionary<string, object> inFlight = new();
+
+        public async Task<ErrorOr<TValue>> GetOrCreateAsync<TValue>(
+            string key,
+            TimeSpan duration,
+            Func<Task<ErrorOr<TValue>>> factory)
+        {
+            if (duration <= TimeSpan.Zero)
+                return await factory();
+
+            if (cache.TryGetValue(key, out TValue? cached) && cached is not null)
+                return cached;
+
+            var pending = (Lazy<Task<ErrorOr<TValue>>>)inFlight.GetOrAdd(
+                key,
+                _ => new Lazy<Task<ErrorOr<TValue>>>(factory));
+
+            try
+            {
+                var result = await pending.Value;
+
+                if (!result.IsError)
+                    cache.Set(key, result.Value, duration);
+
+                return result;
+            }
+            finally
+            {
+                inFlight.TryRemove(key, out _);
+            }
+        }
+    }
+}