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Code Issues Actions 8 Packages Projects Releases Wiki Activity

Implement limiting caches (#13605)

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* Implement basic expiring cache for LibraryManager

* Add expiring cache to more places

* Rider why

* Make DirectoryService caches static

* Use FastConcurrentLru

* Reduce default cache size

* Simplify DirectoryService caches

* Make directory service cache size at least 128
This commit is contained in:
Cody Robibero
2025-03-27 18:16:54 -06:00
committed by GitHub
parent e9331fe9d7
commit 88ceaa39b0
8 changed files with 37 additions and 31 deletions
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1
MediaBrowser.Controller/MediaBrowser.Controller.csproj
View File

@@ -18,6 +18,7 @@
</PropertyGroup>
<ItemGroup>
<PackageReference Include="BitFaster.Caching" />
<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" />
<PackageReference Include="Microsoft.Extensions.Configuration.Binder" />
<PackageReference Include="System.Threading.Tasks.Dataflow" />

17
MediaBrowser.Controller/Providers/DirectoryService.cs
View File

@@ -1,23 +1,22 @@
#pragma warning disable CS1591
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using BitFaster.Caching.Lru;
using MediaBrowser.Model.IO;
namespace MediaBrowser.Controller.Providers
{
public class DirectoryService : IDirectoryService
{
// These caches are primarily used for scanning so no reason to have them be large.
private static readonly FastConcurrentLru<string, FileSystemMetadata[]> _cache = new(Environment.ProcessorCount, Math.Max(128, Environment.ProcessorCount * 10), StringComparer.Ordinal);
private static readonly FastConcurrentLru<string, FileSystemMetadata> _fileCache = new(Environment.ProcessorCount, Math.Max(128, Environment.ProcessorCount * 10), StringComparer.Ordinal);
private static readonly FastConcurrentLru<string, List<string>> _filePathCache = new(Environment.ProcessorCount, Math.Max(128, Environment.ProcessorCount * 10), StringComparer.Ordinal);
private readonly IFileSystem _fileSystem;
private readonly ConcurrentDictionary<string, FileSystemMetadata[]> _cache = new(StringComparer.Ordinal);
private readonly ConcurrentDictionary<string, FileSystemMetadata> _fileCache = new(StringComparer.Ordinal);
private readonly ConcurrentDictionary<string, List<string>> _filePathCache = new(StringComparer.Ordinal);
public DirectoryService(IFileSystem fileSystem)
{
_fileSystem = fileSystem;
@@ -74,13 +73,13 @@ namespace MediaBrowser.Controller.Providers
public FileSystemMetadata? GetFileSystemEntry(string path)
{
if (!_fileCache.TryGetValue(path, out var result))
if (!_fileCache.TryGet(path, out var result))
{
var file = _fileSystem.GetFileSystemInfo(path);
if (file?.Exists ?? false)
{
result = file;
_fileCache.TryAdd(path, result);
_fileCache.AddOrUpdate(path, result);
}
}