👁 Image
SoftwareExtravaganza.Whizbang.Data.EFCore.Custom 0.685.1-alpha.29

<p align="center"> <img alt="Whizbang — One Runtime. Any Store. Every Message." src="assets/hero-banner.svg" width="100%"> </p>

<p align="center"> <a href="https://whizba.ng/">Documentation</a> · <a href="https://www.nuget.org/packages/Whizbang.Core/">NuGet</a> · <a href="CONTRIBUTING.md">Contributing</a> </p>

<p align="center"> <a href="https://github.com/whizbang-lib/whizbang/actions/workflows/ci.yml"><img src="https://github.com/whizbang-lib/whizbang/actions/workflows/ci.yml/badge.svg" alt="CI"></a> <a href="https://codecov.io/gh/whizbang-lib/whizbang"><img src="https://codecov.io/gh/whizbang-lib/whizbang/branch/main/graph/badge.svg" alt="codecov"></a> <a href="https://sonarcloud.io/dashboard?id=whizbang-lib_whizbang"><img src="https://sonarcloud.io/api/project_badges/measure?project=whizbang-lib_whizbang&metric=alert_status" alt="Quality Gate Status"></a> <a href="https://www.nuget.org/packages/Whizbang.Core/"><img src="https://img.shields.io/nuget/v/Whizbang.Core.svg" alt="NuGet"></a> <a href="https://opensource.org/licenses/MIT"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a> </p>

<p align="center"> <a href="https://github.com/whizbang-lib/whizbang/actions/workflows/security-secrets.yml"><img src="https://github.com/whizbang-lib/whizbang/actions/workflows/security-secrets.yml/badge.svg" alt="Secret Scanning"></a> <a href="https://github.com/whizbang-lib/whizbang/actions/workflows/security-supply-chain.yml"><img src="https://github.com/whizbang-lib/whizbang/actions/workflows/security-supply-chain.yml/badge.svg" alt="Supply Chain"></a> <a href="https://securityscorecards.dev/viewer/?uri=github.com/whizbang-lib/whizbang"><img src="https://api.securityscorecards.dev/projects/github.com/whizbang-lib/whizbang/badge" alt="OSSF Scorecard"></a> </p>

<p align="center"> <a href="https://codecov.io/gh/whizbang-lib/whizbang"><img src="https://codecov.io/gh/whizbang-lib/whizbang/graphs/sunburst.svg?token=F1AZXLI2MM" alt="Codecov Sunburst" width="200"></a> </p>

<h3 align="center"><a href="https://whizba.ng">Read the full documentation at whizba.ng</a></h3>

Why Whizbang?

• Blazing Performance — < 20ns in-process message dispatch with zero allocations on the hot path
• Native AOT from Day One — Source generators wire everything at compile time; no reflection, no runtime surprises
• Type Safe — Compile-time verification of message handlers, routing, and event schemas
• Developer Experience — Rich IDE support with code navigation, diagnostics, and discovery via source generators

Core Concepts

Receptors — Stateless message handlers that receive commands and produce events. Type-safe with flexible response types.

Dispatcher — Message routing engine that connects messages to receptors with full observability (correlation, causation, hops).

Perspectives — Materialized read models built from event streams. Individually hash-tracked for incremental migration.

Lenses — Composable query projections over perspective data with LINQ translation to SQL.

Event Store — Append-only event storage with stream-based organization, UUIDv7 ordering, and optimistic concurrency.

Policy Engine — Declarative rules for message validation, transformation, and routing decisions.

Project Structure

src/
├── Whizbang.Core/ # Core interfaces, messaging, perspectives, lenses
├── Whizbang.Generators/ # Roslyn source generators (receptors, perspectives, registry)
├── Whizbang.Data.Dapper.Postgres/ # Dapper + PostgreSQL stores (event store, work coordinator)
├── Whizbang.Data.EFCore.Postgres/ # EF Core + PostgreSQL stores with turnkey initialization
├── Whizbang.Data.EFCore.Postgres.Generators/ # EF Core source generators (schema, registration)
├── Whizbang.Transports.RabbitMQ/ # RabbitMQ transport
├── Whizbang.Transports.AzureServiceBus/ # Azure Service Bus transport
├── Whizbang.Transports.HotChocolate/ # GraphQL integration via HotChocolate
├── Whizbang.Transports.FastEndpoints/ # REST integration via FastEndpoints
├── Whizbang.SignalR/ # Real-time push via SignalR
├── Whizbang.Observability/ # Metrics and tracing
├── Whizbang.Testing/ # Test utilities and fakes
└── Whizbang.Hosting.*/ # Hosted service wiring for transports

Technology Stack

• .NET 10 — Target framework
• PostgreSQL — Primary database with JSONB, UUIDv7, and hash-based schema migration
• EF Core 10 / Dapper — Dual data access with source-generated models
• Roslyn Source Generators — Compile-time wiring for receptors, perspectives, and DI registration
• TUnit — Source-generated testing with Microsoft.Testing.Platform
• Rocks — Source-generated mocking for AOT compatibility
• Vogen — Source-generated value objects

Getting Started

dotnet add package SoftwareExtravaganza.Whizbang.Core

See the Quick Start guide for a walkthrough.

Philosophy

• Zero Reflection — Everything via source generators
• AOT Compatible — Native AOT from day one
• Type Safe — Compile-time safety everywhere
• Test Driven — 21,000+ tests with comprehensive coverage
• Documentation First — Docs drive implementation

Contributing

See for guidelines.

License