evertask

Overview

EverTask runs background work in your .NET app: fire-and-forget jobs, delayed and scheduled tasks, and recurring schedules. Everything is persisted, so tasks survive a restart.

It runs in-process (no external scheduler, no Windows Service, no separate worker host), and it doesn't poll the database in a loop. An in-memory scheduler drives execution through channels, and persistence happens where it matters: on enqueue, on status changes, and for recovery after a restart.

If you've used MediatR, the request/handler pattern will feel familiar. The difference is that here tasks are persisted, can be isolated across queues, and keep working under load.

Tasks can be CPU-bound or I/O-bound, long- or short-running. Works with ASP.NET Core, Windows Services, or any .NET host.

Key Features

Core execution

• Background execution: fire-and-forget, scheduled, and recurring tasks
• No database polling: the scheduler lives in memory and runs through channels; the database is written, not polled in a loop
• Persistence: tasks resume after a restart (SQL Server, PostgreSQL, SQLite, In-Memory)
• Fluent scheduling: recurring tasks by minute, hour, day, week, month, or cron
• Idempotent registration: a task key keeps duplicate recurring registrations out

Performance & scalability

• Multi-queue: isolate workloads by priority, resource type, or business domain
• Keyed rate limiting: throttle per tenant/account/resource against external API limits, without blocking workers or other keys
• Light scheduler: minimal lock contention, zero CPU when idle
• Sharded scheduler: optional, for high scheduling load
• Lower overhead: reflection caching and lazy serialization

Monitoring

• Dashboard + REST API: an embedded React UI for monitoring and analytics
• Real-time updates: SignalR push with event-driven cache invalidation
• Execution log capture: a proxy logger with optional database persistence and configurable retention
• Audit levels: tune how much audit history you keep, to control table growth

Resilience

• Retry policies: built-in linear retry, custom policies, Polly integration, exception filtering
• Timeouts: global and per-task

Developer experience

• Extensible: custom storage, retry policies, and schedulers
• Serilog integration: structured logging
• Async throughout
• Compile-time payload analyzer: a Roslyn analyzer (ET0001–ET0007) bundled in EverTask.Abstractions catches System.Text.Json contract violations in the IDE/build, with code fixes (see below)

Quick Start

Installation

dotnet add package EverTask
dotnet add package EverTask.Storage.SqlServer  # Or EverTask.Storage.Postgres / EverTask.Storage.Sqlite

Configuration

// Register EverTask with SQL Server storage
builder.Services.AddEverTask(opt =>
{
    opt.RegisterTasksFromAssembly(typeof(Program).Assembly);
})
.AddSqlServerStorage(builder.Configuration.GetConnectionString("EverTaskDb"));

Create Your First Task