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One dashboard for every background job in your .NET environment. Distributed scheduler with decoupled workers and drop-in monitoring for Hangfire & Quartz.NET.

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<h1 align="center">Milvaion</h1>

<p align="center">
A distributed job scheduling system built on .NET 10
<br>
<sub>Already on <b>Hangfire</b> or <b>Quartz.NET</b>? Keep it — <a href="#already-running-hangfire-or-quartznet">add Milvaion monitoring in two lines</a>.</sub>
</p>

[![.NET 10](https://img.shields.io/badge/.NET-10-512BD4?style=flat-square&logo=dotnet)](https://dotnet.microsoft.com/)
[![License: Apache 2.0](https://img.shields.io/badge/License-APACHE2.0-green?style=flat-square)](https://raw.githubusercontent.com/Milvasoft/milvaion/master/LICENSE)
[![NuGet Downloads](https://img.shields.io/nuget/dt/Milvasoft.Milvaion.Sdk.Worker?style=flat-square&label=downloads)](https://www.nuget.org/packages/Milvasoft.Milvaion.Sdk.Worker/)

[![CI](https://github.com/Milvasoft/milvaion/actions/workflows/ci.yml/badge.svg)](https://github.com/Milvasoft/milvaion/actions/workflows/ci.yml)
[![codecov](https://codecov.io/gh/Milvasoft/milvaion/branch/master/graph/badge.svg)](https://codecov.io/gh/Milvasoft/milvaion)
[![Release](https://github.com/Milvasoft/milvaion/actions/workflows/release.yml/badge.svg)](https://github.com/Milvasoft/milvaion/releases)
[![GitHub release](https://img.shields.io/github/v/release/Milvasoft/milvaion?include_prereleases&style=flat-square)](https://github.com/Milvasoft/milvaion/releases)

[🌐 Website](https://www.milvaion.com/) |
[📚 Documentation](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/milvaion-doc-guide) |
[🚀 Getting Started](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/quick-start) |
[📦 Packages](https://www.nuget.org/packages?q=Milvaion&includeComputedFrameworks=true&prerel=true) |
[🐳 Docker](https://hub.docker.com/r/milvasoft/milvaion-api)
</div>

<br>

## What is Milvaion?

Milvaion is a **distributed job scheduling system** that separates the *scheduler* (API that decides when jobs run) from the *workers* (processes that execute jobs), connected via Redis and RabbitMQ.

```
┌─────────────────┐        ┌─────────────────┐       ┌─────────────────┐
│  Milvaion API   │        │    RabbitMQ     │       │    Workers      │
│  (Scheduler)    │───────>│  (Job Queue)    │──────>│  (Executors)    │
│                 │        │                 │       │                 │
│ • REST API      │        │ • Job messages  │       │ • IJob classes  │
│ • Dashboard     │        │ • Status queues │       │ • Retry logic   │
│ • Cron parsing  │<───────│ • Log streams   │<──────│ • DI support    │
│ • Workflow DAG  │        │                 │       │                 │
└─────────────────┘        └─────────────────┘       └─────────────────┘
```

### Why Milvaion?

Most job schedulers run jobs **inside the same process** as the scheduling logic. This works fine until:

- A long-running job blocks other jobs from executing
- A crashing job takes down the entire scheduler
- You need different hardware for different job types (e.g., GPU for ML jobs)
- You want to scale job execution independently from the API

Milvaion solves these problems by **completely separating scheduling from execution**.

---

## Already Running Hangfire or Quartz.NET?

**You don't have to migrate to adopt Milvaion.**

Milvaion plugs into the scheduler you already run. Your scheduler keeps owning triggers, storage and cron expressions. Your job code doesn't change. Milvaion adds one real-time dashboard across every service, plus persisted execution history, metrics and alerting.

```csharp
// Hangfire - your existing setup stays exactly as it is
builder.Services.AddMilvaionHangfireIntegration(builder.Configuration);
builder.Services.AddHangfire((sp, config) => config.UseMilvaion(sp));

// Quartz.NET - your existing setup stays exactly as it is
builder.Services.AddMilvaionQuartzIntegration(builder.Configuration);
builder.Services.AddQuartz(q => q.UseMilvaion(builder.Services));
```

That's the whole integration.

### The problem this solves

A typical .NET estate ends up with background jobs scattered across a dozen services — each with its own dashboard behind its own URL and its own auth. Nobody can answer *"which jobs failed last night?"* without opening every one of them, and history vanishes when the retention window rolls over.

| Before | After |
|--------|-------|
| One dashboard per service | One dashboard for the whole estate |
| History limited by Hangfire/Quartz retention | Full execution history in PostgreSQL |
| Logs only in each app's own sink | Real-time log streaming per execution |
| Failures noticed when someone complains | Multi-channel alerts on failure and timeout |
| No cross-service metrics | Success rate, duration and EPM per job |

### The adoption path

1. **Add monitoring** — two lines per application. No migration window, no change to job code.
2. **Get visibility** — every Hangfire and Quartz.NET job appears in the dashboard, flagged as external.
3. **Migrate selectively, or never** — when one job outgrows in-process execution, move just that job to a Milvaion worker. Everything else keeps running untouched.

Plenty of teams stop at step 2. That's a perfectly good outcome.

| Scheduler | Package | Status |
|-----------|---------|--------|
| **Hangfire** | `Milvasoft.Milvaion.Sdk.Worker.Hangfire` | ✅ Available |
| **Quartz.NET** | `Milvasoft.Milvaion.Sdk.Worker.Quartz` | ✅ Available |

📖 **[Full Integration Guide →](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/external-schedulers)**

---

## Features

![Milvaion Real Time](https://portal.milvasoft.com/assets/images/executions-4b5918b7fca1b603f54be133c7880397.gif)

### Reliability
- **At-least-once delivery** via RabbitMQ manual ACK
- **Automatic retries** with exponential backoff
- **Dead Letter Queue** for failed jobs after max retries
- **Zombie detection** recovers stuck jobs
- **Auto disable** always failing jobs (configurable threshold)

### Scalability
- **Horizontal worker scaling** - add more workers for more throughput
- **Job-type routing** - route specific jobs to specialized workers
- **Independent scaling** - scale API and workers separately

### Observability
- **Real-time dashboard** with SignalR updates
- **Execution logs** - User-friendly logs stored in occurrences + technical logs to Seq
- **Worker health monitoring** via heartbeats
- **OpenTelemetry support** for metrics and tracing

### Developer Experience
- **Simple `IJob` interfaces** - implement one method
- **Full DI support** - inject services into jobs
- **Auto-discovery** - jobs registered automatically
- **Cancellation support** - graceful shutdown
- **Project templates** - get started quickly with `dotnet new`

### Workflow Engine
- **DAG-based orchestration** - Chain jobs into directed acyclic graphs
- **Conditional branching** - Route execution through `true`/`false` ports based on step results or statuses
- **Merge nodes** - Wait for all parallel branches before continuing
- **Data mappings** - Pass output fields from upstream steps into downstream job data
- **Failure strategies** - Stop on first failure or continue on failure
- **Cron & manual triggers** - Schedule workflows with cron or trigger on demand
- **Visual builder** - Drag-and-drop DAG editor in the dashboard

### Built-in Workers
- **HTTP Worker** - Call REST APIs on schedule
- **SQL Worker** - Execute database queries
- **Email Worker** - Send emails via SMTP
- **Maintenance Worker** - Milvaion self data warehouse cleanup and archival

### External Scheduler Integration
Milvaion also monitors jobs running in **Quartz.NET** and **Hangfire** without replacing them — see [Already Running Hangfire or Quartz.NET?](#already-running-hangfire-or-quartznet) above.

### MCP Server
Point Claude Code, Cursor or GitHub Copilot at Milvaion and ask about your jobs in plain language:

```json
{
  "mcpServers": {
    "milvaion": {
      "type": "http",
      "url": "https://milvaion.yourcompany.com/mcp",
      "headers": { "X-ApiKey": "your-api-key" }
    }
  }
}
```

> *"Which jobs failed last night and why?"*

More than forty tools — reading, triggering, pausing, editing and deleting — each gated by the same permissions used everywhere else. A read-only api key gives an assistant full visibility and no ability to change anything. Milvaion is the data source here; it never calls a language model and stores no model provider keys.

📖 **[MCP Server Guide →](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/mcp-server)**

---

## Quick Start

### Prerequisites

- **Docker Desktop** (v20.10+) with Docker Compose
- **Web browser** for the dashboard

### 1. Start the Stack

```bash
# Clone the repository
git clone https://github.com/Milvasoft/milvaion.git
cd milvaion

# Start all services
docker compose up -d
```

### 2. Access the Dashboard

Open **http://localhost:5000** in your browser.

- Default username: `rootuser`
- Get password: `admin` (which is defined in docker-compose.yml) or if not defined auto generated password : `docker logs milvaion-api 2>&1 | grep -i "password"`

### 3. Create Your First Job

```bash
curl -X POST http://localhost:5000/api/v1/jobs/job \
  -H "Content-Type: application/json" \
  -d '{
    "displayName": "My First Job",
    "workerId": "sample-worker-01",
    "selectedJobName": "SampleJob",
    "cronExpression": "* * * * *",
    "isActive": true,
    "jobData": "{\"message\": \"Hello from Milvaion!\"}"
  }'
```

📖 **[Full Quick Start Guide →](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/quick-start)**

---

## Architecture

Milvaion follows **Onion Architecture** principles with clear separation of concerns:

![Architecture](https://raw.githubusercontent.com/Milvasoft/milvaion/master/docs/portaldocs/src/architecture.png)

### Solution Structure

```
milvaion/
├── src/
│   ├── Core/
│   │   ├── Milvaion.Domain/          # Entities, enums, domain logic
│   │   └── Milvaion.Application/     # Use cases, DTOs, interfaces
│   ├── Infrastructure/
│   │   └── Milvaion.Infrastructure/  # EF Core, external services
│   ├── Presentation/
│   │   └── Milvaion.Api/             # REST API, controllers, dashboard
│   ├── Sdk/
│   │   ├── Milvasoft.Milvaion.Sdk/        # Client SDK
│   │   └── Milvasoft.Milvaion.Sdk.Worker/ # Worker SDK
│   ├── Workers/
│   │   ├── HttpWorker/               # Built-in HTTP worker
│   │   ├── SqlWorker/                # Built-in SQL worker
│   │   ├── EmailWorker/              # Built-in Email worker
│   │   └── MilvaionMaintenanceWorker/ # Maintenance jobs
│   └── MilvaionUI/                   # React dashboard
├── tests/
│   ├── Milvaion.UnitTests/
│   └── Milvaion.IntegrationTests/
├── docs/
│   ├── portaldocs/                   # User documentation
│   └── githubdocs/                   # Developer documentation
└── build/                            # Build scripts
```

### Project Dependencies

![Project Dependencies](https://raw.githubusercontent.com/Milvasoft/milvaion/master/docs/src/project-dependencies.png)

**Build Order:** Domain → Application → Infrastructure → Api → Tests

---

## Development Setup

### Prerequisites

- **.NET 10 SDK**
- **PostgreSQL 16**
- **Redis 7**
- **RabbitMQ 3.x**
- **Node.js 18+** (for UI development)

### Local Development

```bash
# Clone repository
git clone https://github.com/Milvasoft/milvaion.git
cd milvaion

# Start infrastructure (PostgreSQL, Redis, RabbitMQ)
docker compose up -d

```

### Running Tests

```bash
# Unit tests
dotnet test tests/Milvaion.UnitTests

# Integration tests (requires infrastructure)
dotnet test tests/Milvaion.IntegrationTests

# All tests with coverage
dotnet test --collect:"XPlat Code Coverage"
```

---

## Creating a Worker

### 1. Install the Template

```bash
dotnet new install Milvasoft.Templates.Milvaion
```

### 2. Create a New Worker

```bash
dotnet new milvaion-console-worker -n MyCompany.MyWorker
cd MyCompany.MyWorker
```

### 3. Implement a Job

```csharp
using Milvasoft.Milvaion.Sdk.Worker.Abstractions;

public class MyCustomJob : IAsyncJob
{
    private readonly IMyService _myService;
    
    public MyCustomJob(IMyService myService)
    {
        _myService = myService;
    }
    
    public async Task ExecuteAsync(IJobContext context)
    {
        context.LogInformation("Starting my custom job...");
        
        var data = JsonSerializer.Deserialize<MyJobData>(context.Job.JobData);
        
        await _myService.ProcessAsync(data, context.CancellationToken);
        
        context.LogInformation("Job completed successfully!");
    }
}
```

📖 **[Full Worker Guide →](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/your-first-worker)**

---

## Workflows

Milvaion's workflow engine lets you chain multiple jobs into a **directed acyclic graph (DAG)** where the engine coordinates execution order, data passing, conditional branching, and failure handling automatically.

### Key Concepts

| Concept | Description |
|---------|-------------|
| **Task Node** | Dispatches a scheduled job — the primary building block |
| **Condition Node** | Evaluates an expression and routes to a `true` or `false` branch |
| **Merge Node** | Waits for all incoming branches to complete before continuing |
| **Edge** | Directed connection between steps defining execution order |
| **Data Mapping** | Passes an output field from one step as input to another |

### Example: Conditional Pipeline

```
┌───────────┐      ┌───────────┐      ┌─────────────┐
│  Extract  │────► │ Price > 50│──T──►│ Send Invoice│
│  Prices   │      │(Condition)│      └─────────────┘
└───────────┘      └────┬──────┘
                        │ F
                  ┌─────▼─────┐
                  │  Log Skip │
                  └───────────┘
```

### Condition Expressions

Conditions support status checks, JSON field comparisons, and logical operators:

```
# All parents completed
@status == 'Completed'

# JSON field check
$.price > 100

# Combined with AND/OR
@status == 'Completed' && $.price > 50

# Target a specific parent step
019d...83f7:@status == 'Completed'
```

### Data Mappings

Pass results between steps using source path → target key mappings:

```
Step 1 (ExtractPrices) → result: { "price": 99, "item": { "name": "Widget" } }

Mapping on Step 2:
  step1Id:price      → amount
  step1Id:item.name  → title

Step 2 receives: { "amount": 99, "title": "Widget" }
```

### Failure Handling

| Strategy | Behavior |
|----------|----------|
| **Stop on First Failure** | Workflow stops immediately; pending steps are skipped |
| **Continue on Failure** | Independent branches keep running; only dependent steps are skipped |

Each workflow can also configure **Max Step Retries** and a **Timeout** (auto-cancel if exceeded).

📖 **[Full Workflows Guide →](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/workflows)**

---

## Documentation

### User Documentation (Portal Docs)

| Document | Description |
|----------|-------------|
| [Introduction](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/introduction) | What is Milvaion, when to use it |
| [Hangfire & Quartz.NET Integration](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/external-schedulers) | Keep your existing scheduler, add Milvaion monitoring |
| [Api Keys](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/api-keys) | Credentials for CI pipelines, scripts and MCP clients |
| [MCP Server](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/mcp-server) | Connect Claude Code, Cursor or Copilot to Milvaion |
| [Quick Start](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/quick-start) | Get running in under 10 minutes |
| [Core Concepts](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/core-concepts) | Architecture and key terms |
| [Your First Worker](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/your-first-worker) | Create a custom worker |
| [Implementing Jobs](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/implementing-jobs) | Advanced job patterns |
| [Configuration](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/configuration) | All configuration options |
| [Deployment](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/deployment) | Docker and Kubernetes deployment |
| [Reliability](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/reliability) | Retry, DLQ, zombie detection |
| [Scaling](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/scaling) | Horizontal scaling strategies |
| [Monitoring](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/monitoring) | Health checks, metrics, logging |
| [Workflows](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/workflows) | DAG-based job pipelines with conditional branching and data passing |

### Developer Documentation (GitHub Docs)

| Document | Description |
|----------|-------------|
| [Contributing](./CONTRIBUTING.md) | How to contribute |
| [Architecture](./docs/githubdocs/ARCHITECTURE.md) | Technical architecture deep-dive |
| [Development](./docs/githubdocs/DEVELOPMENT.md) | Development environment setup |
| [Worker SDK](./docs/githubdocs/WORKER-SDK.md) | Worker SDK reference |
| [MCP Server](./docs/githubdocs/MCP-SERVER.md) | MCP server and api key auth internals |
| [Security](./SECURITY.md) | Security policies |

---

## Tech Stack

| Component | Technology |
|-----------|------------|
| **Backend** | .NET 10, ASP.NET Core |
| **Database** | PostgreSQL 16, Entity Framework Core |
| **Cache/Scheduling** | Redis 7 |
| **Message Queue** | RabbitMQ 3.x |
| **Frontend** | React, TypeScript, Vite |
| **Real-time** | SignalR |
| **Logging** | Serilog, Seq |
| **Metrics** | OpenTelemetry, Prometheus |
| **Testing** | xUnit, FluentAssertions, Testcontainers |
| **CI/CD** | GitHub Actions, Docker |

### Key Libraries

- **CQRS**: MediatR, Milvasoft.Components.CQRS
- **Data Access**: Npgsql.EntityFrameworkCore.PostgreSQL, Milvasoft.DataAccess.EfCore
- **Authentication**: JWT Bearer, Milvasoft.Identity
- **API**: Asp.Versioning.Mvc, Scalar (OpenAPI)
- **Validation**: FluentValidation
- **Messaging**: RabbitMQ.Client

### Design Patterns Used

- CQRS (Command Query Responsibility Segregation)
- Mediator Pattern
- Repository Pattern
- Factory Pattern
- Outbox Pattern (for offline resilience)
- Leader Election (for dispatcher)

---

## Contributing

We welcome contributions! Please see our [Contributing Guide](./CONTRIBUTING.md) for details.

### Quick Contribution Steps

1. Fork the repository
2. Create a feature branch (`git checkout -b feature/amazing-feature`)
3. Make your changes
4. Run tests (`dotnet test`)
5. Commit your changes (`git commit -m 'feat: Add amazing feature.'`)
6. Push to the branch (`git push origin feature/amazing-feature`)
7. Open a Pull Request

Please read our [Code of Conduct](./CODE_OF_CONDUCT.md) before contributing.

---

## Packages

### NuGet Packages

| Package | Description | NuGet |
|---------|-------------|-------|
| `Milvasoft.Milvaion.Sdk` | Core SDK with domain models and shared types | [![NuGet](https://img.shields.io/nuget/v/Milvasoft.Milvaion.Sdk)](https://www.nuget.org/packages/Milvasoft.Milvaion.Sdk/) |
| `Milvasoft.Milvaion.Sdk.Worker` | Worker SDK for building job executors | [![NuGet](https://img.shields.io/nuget/v/Milvasoft.Milvaion.Sdk.Worker)](https://www.nuget.org/packages/Milvasoft.Milvaion.Sdk.Worker/) |
| `Milvasoft.Templates.Milvaion` | Project templates for creating workers | [![NuGet](https://img.shields.io/nuget/v/Milvasoft.Templates.Milvaion)](https://www.nuget.org/packages/Milvasoft.Templates.Milvaion/) |

### Installation

```bash
# Core SDK (for shared types)
dotnet add package Milvasoft.Milvaion.Sdk

# Worker SDK (for building workers)
dotnet add package Milvasoft.Milvaion.Sdk.Worker

# Worker Templates
dotnet new install Milvasoft.Templates.Milvaion
```

---

## Docker

### Docker Images

| Image | Description | Docker Hub |
|-------|-------------|------------|
| `milvasoft/milvaion-api` | Main API with scheduler and dashboard | [![Docker](https://img.shields.io/docker/v/milvasoft/milvaion-api?label=docker)](https://hub.docker.com/r/milvasoft/milvaion-api) |

### Quick Start with Docker

```bash
# Pull the latest image
docker pull milvasoft/milvaion-api:latest

# Run with Docker Compose
cd build
docker compose up -d
```

### Available at

- **API**: http://localhost:5000
- **Dashboard**: http://localhost:5000
- **Grafana**: http://localhost:3000 (admin/admin)
- **Prometheus**: http://localhost:9090
- **RabbitMQ Management**: http://localhost:15672 (guest/guest)
- **Seq Logs**: http://localhost:5341

---

## License

This project is licensed under the Apache 2.0 License - see the [LICENSE](LICENSE) file for details.

---

## Support

- 📖 [Documentation](https://portal.milvasoft.com/docs/1.0.1/open-source-libs/milvaion/milvaion-doc-guide)
- 🐛 [Issue Tracker](https://github.com/Milvasoft/milvaion/issues)
- 💬 [Discussions](https://github.com/Milvasoft/milvaion/discussions)

---

<p align="center">
  Made with ❤️ by <a href="https://github.com/Milvasoft">Milvasoft</a>
</p>

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