Critter Stack services can add, disable, and remove tenants at runtime — new databases and all. CritterWatch turns that capability into an operator console: a tenant lifecycle you can drive from a browser, and performance metrics broken down per tenant id.
The first release candidate for CritterWatch 1.0 — a purpose-built monitoring and operations console for the Critter Stack that shows you the system you actually shipped, watches it for you, hands your AI assistant a real control surface, and gives you a proper cockpit for the event store.
Recent Marten work widens what your LINQ Where/Select expressions translate into PostgreSQL SQL and JSONPath -- so more of your query runs in the database instead of falling back to slower client-side evaluation.
A deep look at the recent hardening of Marten's async projection high water detection -- why an in-flight transaction gap is dangerous, and how transaction evidence keeps projections from ever silently skipping an event.
Mature open-source infrastructure isn't about splashy features -- it's about compounding reliability and measured performance work. Here's how the Critter Stack keeps getting faster and more correct underneath you.
Strict message ordering usually means single-threaded consumers, distributed locks, or a lot of hand-rolled bookkeeping. Wolverine's global partitioning and re-sequencer give you ordered processing across a cluster while still scaling out — no explicit locking required.
CritterWatch 1.0.0-alpha.1 is loose on NuGet — a monitoring and production-management console for Wolverine, Marten, and Polecat that doubles as dev-time insight and an MCP control surface for your AI agents.
Polecat is an event store and lightweight document database for .NET, backed by SQL Server 2025. It brings the proven Marten development model — same IDocumentStore API, projections, and async daemon — to SQL Server shops without a database migration.
The .NET community keeps relitigating Result types vs. exceptions for error handling. With Wolverine you mostly get to opt out of that whole debate — let the framework handle the 404s, the 400s, and the OpenAPI metadata while your code stays clean of both Result wrappers and exception-as-control-flow.
CritterWatch 0.8.0 is the largest release yet — a purpose-built monitoring and operations console for the Critter Stack with production observability, development-time insight, and an MCP control surface built for AI agents.
Why the Critter Stack and Wolverine are the best foundation for vertical slice architecture in the age of AI coding agents — aggressive code compression, locality of reference, and conventions encoded in AI skill files.
Wolverine, the low-ceremony .NET application framework for asynchronous messaging, HTTP endpoints, and CQRS, just passed five million NuGet downloads — with a million in the last six weeks alone.
The Critter Stack 2026 releases have landed: faster cold starts, AOT compliance, better Serverless support, and new greenfield defaults across Marten, Polecat, and Wolverine.
JasperFx Software's officially curated AI Skills for the Critter Stack are now available for purchase — continuously improved guidance that helps AI coding agents write idiomatic Marten, Polecat, and Wolverine code.
Wolverine.HTTP is a first-class HTTP framework for ASP.NET Core built for vertical slice architecture — low ceremony, no Mediator library, built-in transactional outbox, and middleware more powerful than IEndpointFilter.
Wolverine has a strong development and production-time story for EF Core developers — transactional middleware, automatic outbox/inbox, runtime database migrations, test data resets, and declarative persistence.
How to build the most efficient possible HTTP query endpoints in .NET by streaming JSON straight from PostgreSQL with Marten — using Marten.AspNetCore's WriteArray and compiled queries with zero C# allocation.
Polecat is a new JasperFx library that brings Marten's proven Event Sourcing and document database model to SQL Server 2025 — the best technical option for Event Sourcing with SQL Server in .NET.
