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

Introducing the universal `ci` modifier

Monday, 18 May 2020

TL;DR: in Seq 2020.1, the postfix ci keyword turns any text comparison into a case-insensitive one. Download the preview or pull datalust/seq:preview from Docker Hub to try it out!

Grouping by request path: case-sensitive (CS) vs. case-insensitive (CI). In a case-sensitive grouping, /API/ORDERS and /api/

Switching to Calendar Versioning in 2020.1

Friday, 15 May 2020

Hi! We hope 2020 is treating you well, despite its unique challenges. At Datalust we've settled into a new fully-remote workflow, which, thankfully, we were reasonably well-prepared for by our existing partly-remote schedule. We know it hasn't been so easy for everyone, so if you're facing any difficulties we can

Welcome to the team, Larene Le Gassick!

Thursday, 13 February 2020

This week at Datalust, we welcomed our new software engineer, Larene Le Gassick, to the team!

Larene has been a longtime user of Seq in her work as a product engineer and consultant, previously at ThoughtWorks, and as a full time engineer at various startups and companies. She's excited to

New from Datalust

.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.