Serilog.Sinks.Loki.YetAnother 1.3.4-v1-0003-0000

This is a prerelease version of Serilog.Sinks.Loki.YetAnother.
dotnet add package Serilog.Sinks.Loki.YetAnother --version 1.3.4-v1-0003-0000                
NuGet\Install-Package Serilog.Sinks.Loki.YetAnother -Version 1.3.4-v1-0003-0000                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Serilog.Sinks.Loki.YetAnother" Version="1.3.4-v1-0003-0000" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Serilog.Sinks.Loki.YetAnother --version 1.3.4-v1-0003-0000                
#r "nuget: Serilog.Sinks.Loki.YetAnother, 1.3.4-v1-0003-0000"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Serilog.Sinks.Loki.YetAnother as a Cake Addin
#addin nuget:?package=Serilog.Sinks.Loki.YetAnother&version=1.3.4-v1-0003-0000&prerelease

// Install Serilog.Sinks.Loki.YetAnother as a Cake Tool
#tool nuget:?package=Serilog.Sinks.Loki.YetAnother&version=1.3.4-v1-0003-0000&prerelease                


I know there are already a few Serilog Loki sinks out there, why another one?

Widly used loki sinks are good and work as expected. But if app produces a lot of logs, in the future this might allocate a lot of objects.

This sink is designed to use less memory and allocate less objects.

The main idea is to use Utf8JsonWriter to write logs directly to the stream.

Moreover, to decrease GC pressure, and memory allocation, it uses custom TextWriter, that writes message directly to the ut8 stream, instead of usual way - StringWriter.

This approach allows to decrease number of allocations and its avg size, and decrease number of GC cycles as well.

As the result, you can send more logs with less drawbacks.


    Log.Logger = new LoggerConfiguration()
          .WriteTo.Loki(new LokiSinkConfigurations()
              Credentials = new LokiCredentials("< login here >", "< password here >"),
              Url = new Uri("< uri to loki server here >"),
              HandleLogLevelAsLabel = true, // adds Serilog.Events.LogEvent.Level as label (default is true)
              PropertiesAsLabels = ["userId"], // adds Serilog.Events.LogEvent.Properties as labels (default is empty)
              Labels = //global labels, will be added to each loki log message (default is empty)
                  new LokiLabel("app", "loki"),
          batchSizeLimit: 1000, //The maximum number of events to include in a single batch (default is 1000)
          period: TimeSpan.FromMilliseconds(2000), // period between sending batches to loki (default is 2000ms)
          queueLimit: 100000, //Maximum number of events to hold in the sink's internal queue, or null for an unbounded queue
          httpClient: null) // custom HttpClient instance, (can be used to set proxy, compression etc)

Using Serilog.Settings.Configurations


  "Serilog": {
    "Using": [ "Serilog.Sinks.Loki" ],
    "WriteTo": [
        "Name": "Loki",
        "Args": {
          "configurations": {
            "Url": "",
            "Labels": [
                "key": "app",
                "value": "myapp"
            "Credentials": {
              "Password": "password",
              "Username": "username"
            "PropertiesAsLabels": [
            "HandleLogLevelAsLabel": false,
            "EnrichTraceId": true,
            "EnrichSpanId": true
          "batchSizeLimit": 999


using Microsoft.Extensions.Configuration;
using Serilog;

var builder = new ConfigurationBuilder()
    .AddJsonFile(Path.Combine(Directory.GetCurrentDirectory(), "appsettings.json"))

Log.Logger = new LoggerConfiguration()


BenchmarkDotNet v0.13.12, Windows 11 (10.0.22631.3007/23H2/2023Update/SunValley3)
Intel Core i5-14600K, 1 CPU, 20 logical and 14 physical cores
.NET SDK 8.0.101
  [Host]   : .NET 8.0.1 (, X64 RyuJIT AVX2
  ShortRun : .NET 8.0.1 (, X64 RyuJIT AVX2

Job=ShortRun  InvocationCount=1  IterationCount=3  
LaunchCount=1  UnrollFactor=1  WarmupCount=3  

Method Mean Error StdDev Ratio RatioSD Completed Work Items Lock Contentions Allocated Alloc Ratio
Default 150.9 ms 138.60 ms 7.60 ms 1.00 0.00 6.0000 1.0000 5.23 MB 1.00
Optimized 157.4 ms 96.08 ms 5.27 ms 1.05 0.08 11.0000 1.0000 1.18 MB 0.23

Allocations are decreased by 4.4 times compared to Serilog.Sinks.Grafana.Loki package, that is great!

However, this banchmarking does not properly handle these cases, so execution time results may not be accurate.

Inspiration and Credits

Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.3.4-v1-0003-0000 91 4/28/2024
1.2.9 546 2/8/2024
1.2.4 92 2/8/2024
1.1.4 127 1/20/2024