Datalust, the company behind Seq

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

Seq Screenshot

News and announcements

SMS alert notifications

Tuesday, 12 April 2022

Alert notifications can be delivered from Seq via SMS by using a third-party SMS service and the new Seq.App.HttpRequest Seq app.

The following query shows the amount of product added per hour:

Seq events screen with query "select sum(Product.SizeInGrams) / 1000 as kg from stream group by time(1h)"

When this amount exceeds 1,600kgs I want to be notified on my phone 💥.


Updated permissions in Seq 2022.1

Tuesday, 05 April 2022

Seq uses a roles-and-permissions based scheme for managing user privileges. Users are assigned to roles, and roles carry one or more of a handful of permissions that API endpoints demand.

In Seq 2022.1, the permissions underlying the Administrator role have been redesigned, so that it's possible to

Seq 2022.1 released today 🎉

Monday, 28 March 2022

We've been working away on Seq 2022.1 for several months, improving usability, performance, and security. Today you can download the new MSI for Windows, or pull datalust/seq:latest from Docker Hub, and find out where all of our efforts have been focused!

Read on for some

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.