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Fix Playlist and Boxset query and count perf

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Shadowghost
2026-05-04 10:22:13 +02:00
parent 622947e374
commit fa65a392b0
7 changed files with 1949 additions and 19 deletions
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32
MediaBrowser.LocalMetadata/Savers/BaseXmlSaver.cs
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@@ -1,4 +1,5 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
@@ -6,7 +7,6 @@ using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
using Jellyfin.Data.Enums;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
@@ -485,16 +485,38 @@ namespace MediaBrowser.LocalMetadata.Savers
return;
}
// Batch-resolve all ItemIds to paths in a single query to avoid an N+1 round-trip per linked child
var idsToResolve = new HashSet<Guid>();
foreach (var link in linkedChildren)
{
if (link.ItemId.HasValue && !link.ItemId.Value.Equals(Guid.Empty))
{
idsToResolve.Add(link.ItemId.Value);
}
}
Dictionary<Guid, string?>? pathById = null;
if (idsToResolve.Count > 0)
{
var batched = LibraryManager.GetItemList(new InternalItemsQuery
{
ItemIds = [.. idsToResolve]
});
pathById = new Dictionary<Guid, string?>(batched.Count);
foreach (var batchedItem in batched)
{
pathById[batchedItem.Id] = batchedItem.Path;
}
}
await writer.WriteStartElementAsync(null, pluralNodeName, null).ConfigureAwait(false);
foreach (var link in linkedChildren)
{
// Resolve ItemId to get the item's path for XML portability
string? path = null;
if (link.ItemId.HasValue && !link.ItemId.Value.Equals(Guid.Empty))
if (pathById is not null && link.ItemId.HasValue && pathById.TryGetValue(link.ItemId.Value, out var resolvedPath))
{
var linkedItem = LibraryManager.GetItemById(link.ItemId.Value);
path = linkedItem?.Path;
path = resolvedPath;
}
if (!string.IsNullOrWhiteSpace(path))