🎉 Seq 2020.2 is here! Read the release notes, or download it now.

Datalust, the company behind Seq

Seq is the intelligent search, analysis, and alerting server built specifically for modern structured log data.

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News and announcements

Deserializing JSON really fast

Wednesday, 02 September 2020

In this post we’re going to look at how Flare deserializes JSON documents stored on disk using a very fast bespoke, sparse, vectorized deserializer called squirrel-json. …

Resetting the Seq Forwarder project

Monday, 31 August 2020

Seq Forwarder is a tiny local server that imitates the Seq HTTP ingestion API. You can send logs to it using any Seq client library; by default it listens on port 15341:

// Logging to Seq Forwarder with Serilog
using var log = new LoggerConfiguration()
    .WriteTo.Seq("http://localhost:15341"

Seq 2020.2 is released 🎉

Wednesday, 26 August 2020

Improved structured data viewer, comments in queries, and other minor enhancements and bug fixes in Seq 2020.2! …

New from Datalust

On .NET Live - Application logs and diagnostics with Serilog

Nicholas Blumhardt talks application diagnostics with Cecil Phillip in On .NET Live.

.NET Rocks! #1647 - Rust and C# with Ashley Mannix

Ashley Mannix talks with Carl and Richard about the combination of Rust and C# used at Datalust.

C# and Rust: Combining Managed and Unmanaged Code Without Sacrificing Safety, NDC Oslo 2019

Ashley Mannix explores the tools that .NET and Rust give us to design and build safe and robust hybrid applications.

Parsing in C# from First Principles, NDC Sydney 2018

Nicholas Blumhardt talks about Superpower, the library we built for parsing SQL queries in Seq, and the foundational principles behind it.

Open Source and the Future of Seq

Brendan Richards interviews Nicholas Blumhardt about Open Source, Rust, Seq, Serilog, and more, in this AMA from NDC Sydney 2018.

Using Structured Logging for Production Insight

Microsoft's Damian Brady and Nicholas Blumhardt talk structured logging in this episode of The DevOps Lab.

.NET Rocks! #1466 - The Evolution of Serilog

Richard Campbell, Carl Franklin, and Nicholas Blumhardt talk all things logging, diagnostics, and monitoring in this .NET Rocks! episode recorded at NDC Oslo 2017.

Serilog: Instrumentation that Works for You, NDC Oslo 2017

Nicholas Blumhardt presents a complete walk-through of Serilog and modern structured logging at NDC Oslo 2017.