Fix excessive track matching and reduce HTTP logging noise

- Added 5-minute cooldown between matching runs to prevent spam
- Improved cache checking to skip unnecessary matching
- Persist matched tracks cache to file for faster restarts
- Cache warming service now loads matched tracks on startup
- Suppress verbose HTTP client logs (LogicalHandler/ClientHandler)
- Only run matching when cache is missing or manual mappings added

allstarr/Program.cs

@@ -97,6 +97,10 @@ builder.Services.ConfigureAll<HttpClientFactoryOptions>(options =>
             MaxAutomaticRedirections = 5
         };
     });
+    
+    // Suppress verbose HTTP logging - these are logged at Debug level by default
+    // but we want to reduce noise in production logs
+    options.SuppressHandlerScope = true;
 });
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();

allstarr/Services/Common/CacheWarmingService.cs

@@ -1,4 +1,5 @@
 using System.Text.Json;
+using allstarr.Models.Domain;
 
 namespace allstarr.Services.Common;
 
@@ -115,10 +116,12 @@ public class CacheWarmingService : IHostedService
             return 0;
         }
 
-        var files = Directory.GetFiles(PlaylistCacheDirectory, "*_items.json");
+        var itemsFiles = Directory.GetFiles(PlaylistCacheDirectory, "*_items.json");
+        var matchedFiles = Directory.GetFiles(PlaylistCacheDirectory, "*_matched.json");
         var warmedCount = 0;
 
-        foreach (var file in files)
+        // Warm playlist items cache
+        foreach (var file in itemsFiles)
         {
             if (cancellationToken.IsCancellationRequested)
                 break;
@@ -145,13 +148,51 @@ public class CacheWarmingService : IHostedService
                     await _cache.SetAsync(redisKey, items, TimeSpan.FromHours(24));
                     warmedCount++;
 
-                    _logger.LogDebug("🔥 Warmed playlist cache for {Playlist} ({Count} items)", 
+                    _logger.LogDebug("🔥 Warmed playlist items cache for {Playlist} ({Count} items)", 
                         playlistName, items.Count);
                 }
             }
             catch (Exception ex)
             {
-                _logger.LogWarning(ex, "Failed to warm playlist cache from file: {File}", file);
+                _logger.LogWarning(ex, "Failed to warm playlist items cache from file: {File}", file);
+            }
+        }
+
+        // Warm matched tracks cache
+        foreach (var file in matchedFiles)
+        {
+            if (cancellationToken.IsCancellationRequested)
+                break;
+
+            try
+            {
+                // Check if cache is expired (1 hour)
+                var fileInfo = new FileInfo(file);
+                if (DateTime.UtcNow - fileInfo.LastWriteTimeUtc > TimeSpan.FromHours(1))
+                {
+                    continue; // Skip expired matched tracks
+                }
+
+                var json = await File.ReadAllTextAsync(file, cancellationToken);
+                var matchedTracks = JsonSerializer.Deserialize<List<MatchedTrack>>(json);
+
+                if (matchedTracks != null && matchedTracks.Count > 0)
+                {
+                    // Extract playlist name from filename
+                    var fileName = Path.GetFileNameWithoutExtension(file);
+                    var playlistName = fileName.Replace("_matched", "");
+
+                    var redisKey = $"spotify:matched:ordered:{playlistName}";
+                    await _cache.SetAsync(redisKey, matchedTracks, TimeSpan.FromHours(1));
+                    warmedCount++;
+
+                    _logger.LogDebug("🔥 Warmed matched tracks cache for {Playlist} ({Count} tracks)", 
+                        playlistName, matchedTracks.Count);
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Failed to warm matched tracks cache from file: {File}", file);
             }
         }
 
@@ -169,4 +210,15 @@ public class CacheWarmingService : IHostedService
         public string Genre { get; set; } = "";
         public DateTime CachedAt { get; set; }
     }
+    
+    private class MatchedTrack
+    {
+        public int Position { get; set; }
+        public string SpotifyId { get; set; } = "";
+        public string SpotifyTitle { get; set; } = "";
+        public string SpotifyArtist { get; set; } = "";
+        public string? Isrc { get; set; }
+        public string MatchType { get; set; } = "";
+        public Song? MatchedSong { get; set; }
+    }
 }

allstarr/Services/Spotify/SpotifyTrackMatchingService.cs

@@ -27,6 +27,8 @@ public class SpotifyTrackMatchingService : BackgroundService
     private readonly IServiceProvider _serviceProvider;
     private const int DelayBetweenSearchesMs = 150; // 150ms = ~6.6 searches/second to avoid rate limiting
     private const int BatchSize = 11; // Number of parallel searches (matches SquidWTF provider count)
+    private DateTime _lastMatchingRun = DateTime.MinValue;
+    private readonly TimeSpan _minimumMatchingInterval = TimeSpan.FromMinutes(5); // Don't run more than once per 5 minutes
 
     public SpotifyTrackMatchingService(
         IOptions<SpotifyImportSettings> spotifySettings,
@@ -164,7 +166,17 @@ public class SpotifyTrackMatchingService : BackgroundService
 
     private async Task MatchAllPlaylistsAsync(CancellationToken cancellationToken)
     {
+        // Check if we've run too recently (cooldown period)
+        var timeSinceLastRun = DateTime.UtcNow - _lastMatchingRun;
+        if (timeSinceLastRun < _minimumMatchingInterval)
+        {
+            _logger.LogInformation("Skipping track matching - last run was {Seconds}s ago (minimum interval: {MinSeconds}s)", 
+                (int)timeSinceLastRun.TotalSeconds, (int)_minimumMatchingInterval.TotalSeconds);
+            return;
+        }
+        
         _logger.LogInformation("=== STARTING TRACK MATCHING ===");
+        _lastMatchingRun = DateTime.UtcNow;
         
         var playlists = _spotifySettings.Playlists;
         if (playlists.Count == 0)
@@ -314,39 +326,40 @@ public class SpotifyTrackMatchingService : BackgroundService
         // Check cache - use snapshot/timestamp to detect changes
         var existingMatched = await _cache.GetAsync<List<MatchedTrack>>(matchedTracksKey);
         
-        // Check if we have manual mappings that need to be preserved
-        var hasManualMappings = false;
+        // CRITICAL: Skip matching if cache exists and is valid
+        // Only re-match if cache is missing OR if we detect manual mappings that need to be applied
+        if (existingMatched != null && existingMatched.Count > 0)
+        {
+            // Check if we have NEW manual mappings that aren't in the cache
+            var hasNewManualMappings = false;
             foreach (var track in tracksToMatch)
             {
+                // Check if this track has a manual mapping but isn't in the cached results
                 var manualMappingKey = $"spotify:manual-map:{playlistName}:{track.SpotifyId}";
                 var manualMapping = await _cache.GetAsync<string>(manualMappingKey);
-            if (!string.IsNullOrEmpty(manualMapping))
-            {
-                hasManualMappings = true;
-                break;
-            }
                 
-            // Also check for external manual mappings
                 var externalMappingKey = $"spotify:external-map:{playlistName}:{track.SpotifyId}";
                 var externalMapping = await _cache.GetAsync<dynamic>(externalMappingKey);
-            if (HasValue(externalMapping))
+                
+                var hasManualMapping = !string.IsNullOrEmpty(manualMapping) || HasValue(externalMapping);
+                var isInCache = existingMatched.Any(m => m.SpotifyId == track.SpotifyId);
+                
+                // If track has manual mapping but isn't in cache, we need to rebuild
+                if (hasManualMapping && !isInCache)
                 {
-                hasManualMappings = true;
+                    hasNewManualMappings = true;
                     break;
                 }
             }
             
-        // Skip if cache exists AND no manual mappings need to be applied
-        if (existingMatched != null && existingMatched.Count >= tracksToMatch.Count && !hasManualMappings)
+            if (!hasNewManualMappings)
             {
-            _logger.LogInformation("Playlist {Playlist} already has {Count} matched tracks cached, skipping", 
-                playlistName, existingMatched.Count);
+                _logger.LogInformation("✓ Playlist {Playlist} already has {Count} matched tracks cached (skipping {ToMatch} new tracks), no re-matching needed", 
+                    playlistName, existingMatched.Count, tracksToMatch.Count);
                 return;
             }
             
-        if (hasManualMappings)
-        {
-            _logger.LogInformation("Manual mappings detected for {Playlist}, rebuilding cache to apply them", playlistName);
+            _logger.LogInformation("New manual mappings detected for {Playlist}, rebuilding cache to apply them", playlistName);
         }
 
         var matchedTracks = new List<MatchedTrack>();
@@ -461,6 +474,9 @@ public class SpotifyTrackMatchingService : BackgroundService
             // Cache matched tracks with position data
             await _cache.SetAsync(matchedTracksKey, matchedTracks, TimeSpan.FromHours(1));
             
+            // Save matched tracks to file for persistence across restarts
+            await SaveMatchedTracksToFileAsync(playlistName, matchedTracks);
+            
             // Also update legacy cache for backward compatibility
             var legacyKey = $"spotify:matched:{playlistName}";
             var legacySongs = matchedTracks.OrderBy(t => t.Position).Select(t => t.MatchedSong).ToList();
@@ -979,5 +995,29 @@ public class SpotifyTrackMatchingService : BackgroundService
             _logger.LogError(ex, "Failed to save playlist items to file for {Playlist}", playlistName);
         }
     }
+    
+    /// <summary>
+    /// Saves matched tracks to file cache for persistence across restarts.
+    /// </summary>
+    private async Task SaveMatchedTracksToFileAsync(string playlistName, List<MatchedTrack> matchedTracks)
+    {
+        try
+        {
+            var cacheDir = "/app/cache/spotify";
+            Directory.CreateDirectory(cacheDir);
+            
+            var safeName = string.Join("_", playlistName.Split(Path.GetInvalidFileNameChars()));
+            var filePath = Path.Combine(cacheDir, $"{safeName}_matched.json");
+            
+            var json = JsonSerializer.Serialize(matchedTracks, new JsonSerializerOptions { WriteIndented = true });
+            await System.IO.File.WriteAllTextAsync(filePath, json);
+            
+            _logger.LogDebug("💾 Saved {Count} matched tracks to file cache: {Path}", matchedTracks.Count, filePath);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to save matched tracks to file for {Playlist}", playlistName);
+        }
+    }
 }
 

allstarr/appsettings.Development.json

@@ -2,7 +2,9 @@
   "Logging": {
     "LogLevel": {
       "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
+      "Microsoft.AspNetCore": "Warning",
+      "System.Net.Http.HttpClient.Default.LogicalHandler": "Warning",
+      "System.Net.Http.HttpClient.Default.ClientHandler": "Warning"
     }
   },
   "SpotifyImport": {

allstarr/appsettings.json

@@ -1,4 +1,12 @@
 {
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning",
+      "System.Net.Http.HttpClient.Default.LogicalHandler": "Warning",
+      "System.Net.Http.HttpClient.Default.ClientHandler": "Warning"
+    }
+  },
   "Backend": {
     "Type": "Subsonic"
   },