Serilog.Sinks.FastConsole

Serilog sink that writes to console with high-performance non-blocking output. Supports plaintext and JSON output but does not support themes and colors.

This sink uses a background channel with a single text buffer and async writes to remove all blocking and lock contention to the console output stream. It also implements IDiposable so that calling Log.CloseAndFlush() will ensure all lines are flushed. Recommended for high-volume logging where console logging is captured and sent elsewhere, for example this library was originally created for a large fleet of API servers running in Kubernetes and logging hundreds of large JSON objects every second.

• Built for net6.0, net5.0, netstandard2.1, netstandard2.0
• Release notes here: CHANGELOG.md

Getting started

Install package from Nuget:

dotnet add package Serilog.Sinks.FastConsole

Configure Logger (using code):

var config = new FastConsoleSinkOptions { UseJson = true };
Log.Logger = new LoggerConfiguration().WriteTo.FastConsole(config).CreateLogger();

• Serilog example for .NET 6: https://blog.datalust.co/using-serilog-in-net-6/

Sink Options

Name	Default	Description
UseJson	true	Enable to write log events as a JSON object with { timestamp, level, message, properties } structure. Provide an ITextFormatter implementation instead to customize the output completely.
QueueLimit	null	Set max limit for the number of log entries queued in memory. Used to provide backpressure and avoid out-of-memory issues for high-volume logging.