Blog

JsonDocumentBuilder and JsonWorkspace provide pooled, version-tracked mutable documents - the core V5 design trade-off that replaces V4's immutable-functional model with in-place mutation.

ParsedJsonDocument<T> uses ArrayPool-backed memory for just 136 bytes of GC pressure per document - 91% less than JsonNode - while providing a familiar System.Text.Json-compatible API.

Corvus.Text.Json V5 validates JSON against all major schema drafts over 10× faster than other .NET validators - with a simple EvaluateSchema() API and optional detailed diagnostics.

Annotate a partial struct with [JsonSchemaTypeGenerator] and get strongly-typed properties, validation, serialization, and mutable builders - all generated at build time with full IntelliSense.

Corvus.Text.Json V5 is a new engine for high-performance JSON in .NET - pooled-memory parsing, mutable documents, source-generated types, and three query languages. Here's why we built it.

VertiPaq fits millions of rows in memory by compressing columns. Learn how value, hash and run-length encoding work, and what they mean for model performance.

VertiPaq stores Power BI data column-by-column rather than row-by-row. That makes aggregations fast and cross-column queries the trickiest part of DAX.

Optimising DAX in Power BI: VertiPaq storage, compression, model design, how queries run through the storage, formula engines, and performance patterns.

Variable libraries in Microsoft Fabric manage environment-specific configuration. Learn where you can use them and how to set safer defaults for Dev/Test/Prod.

AI is like introducing a powerful new instrument to an orchestra. It creates possibilities that didn't exist before. But it still requires musicians who can read music, a conductor with a vision, rehearsal time, and the discipline to play together. An orchestra that lacks these fundamentals won't be saved by a new instrument — they'll just make new kinds of noise.

SharePoint isn't going away. This post compares five ways to ingest SharePoint data into Microsoft Fabric, with guidance on cost, complexity, and incremental loading.

Top-down AI strategy and bottom-up experimentation both fail alone: leading organisations combine them to drive real business results.

SQLBits is one of the largest data platform conferences in Europe. Here's a recap of my experience at SQLBits 2026, held at the ICC Wales.

Databricks SQL cold starts kill web API performance. Fix it with two-layer caching: Azure Blob Storage & IMemoryCache, using the Decorator pattern.

Benchmarking Pandas, PySpark, Polars, and DuckDB on Microsoft Fabric: in-process Python engines run 4-5x cheaper and faster than Spark for common workloads.

Apply the Medallion Architecture to Excel: use the three-tab rule to separate raw data, logic, and output for cleaner, maintainable spreadsheets.

LINQ's projecting Max operator has a trap for the unwary when used with value types. Understand what goes wrong, and how to avoid it.

After years away, I returned to work in the UK. Here's how remote flexibility protected my mental health and made that transition possible!

A simple mental model for making sense of the AI-assisted coding landscape: four layers, four decisions.

Integration testing Azure Functions with Reqnroll and C#. Part 5 covers running your Corvus.Testing specs in Azure DevOps and GitHub Actions pipelines.

Integration testing Azure Functions with Reqnroll and C#. Part 4 shows how to supply or override configuration values for the functions apps under test.

Integration testing Azure Functions with Reqnroll and C#. Part 3 uses scenario and feature hooks to start functions apps and keep your BDD specs readable.

Integration testing Azure Functions with Reqnroll and C#. Part 2 uses Corvus.Testing step bindings to start and stop functions apps in your scenarios.

Integration testing Azure Functions with Reqnroll and C#. Part 1 sets out the testing challenge and introduces the open-source Corvus.Testing library.

Shift from prompt engineering to AI programming by applying rigorous software engineering principles to your LLM integrations.