Enhance query performance by applying AsSplitQuery to multiple handlers and loaders for Channels and ScheduleTemplates, improving efficiency in data retrieval and reducing unnecessary data duplication in queries.

backend/src/TeleWave.Application/Broadcast/Bumpers/AddBumperTextVariantCommandHandler.cs

@@ -16,6 +16,7 @@ public sealed class AddBumperTextVariantCommandHandler(IAppDbContext dbContext)
         var channel = await dbContext
             .Channels.Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == command.ChannelId, cancellationToken);
         if (channel is null)
             return Result.Failure<Guid>(ChannelErrors.NotFound);

backend/src/TeleWave.Application/Broadcast/Bumpers/BumperSpecLoader.cs

@@ -42,6 +42,7 @@ public sealed class BumperSpecLoader(
             .Channels.AsNoTracking()
             .Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == cache.ChannelId, cancellationToken);
         var template = channel?.BumperTemplates.FirstOrDefault(t => t.Id == cache.TemplateId);
         var variant = template?.Variants.FirstOrDefault(v => v.Id == cache.VariantId);

backend/src/TeleWave.Application/Broadcast/Bumpers/RemoveBumperTextVariantCommandHandler.cs

@@ -16,6 +16,7 @@ public sealed class RemoveBumperTextVariantCommandHandler(IAppDbContext dbContex
         var channel = await dbContext
             .Channels.Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == command.ChannelId, cancellationToken);
         if (channel is null)
             return Result.Failure(ChannelErrors.NotFound);

backend/src/TeleWave.Application/Broadcast/Bumpers/RenderBumperPreviewCommandHandler.cs

@@ -33,6 +33,7 @@ public sealed class RenderBumperPreviewCommandHandler(
             .Channels.AsNoTracking()
             .Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == query.ChannelId, cancellationToken);
         if (channel is null)
             return Result.Failure(ChannelErrors.NotFound);

backend/src/TeleWave.Application/Broadcast/Bumpers/UpdateBumperTextVariantCommandHandler.cs

@@ -16,6 +16,7 @@ public sealed class UpdateBumperTextVariantCommandHandler(IAppDbContext dbContex
         var channel = await dbContext
             .Channels.Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == command.ChannelId, cancellationToken);
         if (channel is null)
             return Result.Failure(ChannelErrors.NotFound);

backend/src/TeleWave.Application/Broadcast/GetChannel/GetChannelQueryHandler.cs

@@ -19,6 +19,7 @@ public sealed class GetChannelQueryHandler(IAppDbContext dbContext)
             .Channels.AsNoTracking()
             .Include(c => c.BumperTemplates)
                 .ThenInclude(t => t.Variants)
+            .AsSplitQuery()
             .FirstOrDefaultAsync(c => c.Id == query.Id, cancellationToken);
         if (channel is null)
             return Result.Failure<ChannelDto>(ChannelErrors.NotFound);