dotnet showcases DataMountain, a .NET-based data warehouse that achieves exceptional performance, highlighting how recent .NET features enable results comparable to systems languages like C++.

DataMountain: .NET Data Warehousing That Beats C++ Performance

Pansynchro Technologies introduces DataMountain, a data warehouse built entirely in .NET that delivers SQL performance able to compete with and sometimes surpass systems like ClickHouse.

Key Topics Covered

Why .NET for Data Warehousing: Traditionally, high-end data processing is dominated by systems languages such as C, C++, and Rust. DataMountain leverages .NET’s performance-focused advancements to challenge this status quo.
Performance Optimizations: Utilizes recent .NET developments, including:
- Code generation for efficient execution
- High-performance structures like Spans and Vectors
- .NET-specific tricks not possible in other languages
Benchmarks: Internal tests show occasions where DataMountain edges out C++ competitors like ClickHouse.
Development Techniques: Insights into how .NET’s continuous improvements (like those in .NET 10, C# 14, and F# 10) contribute to a data platform’s speed and efficiency.

Additional .NET Innovations Mentioned

.NET Aspire 13 for cloud-native orchestration
ASP.NET Core 10 for modern full-stack development
.NET MAUI 10, Visual Studio 2026, and updates in C# and F#

Further Resources

Conclusion

DataMountain exemplifies how .NET can now rival traditional systems programming languages in high-performance data warehousing, opening new possibilities for .NET developers in the data engineering and data science ecosystems.