Seeding

TickerQ supports multiple seeding strategies for initializing jobs in the database when the application starts.

Seeding Strategies

TickerQ provides three seeding mechanisms:

1. Automatic Cron Seeding

Automatic seeding of cron jobs from [TickerFunction] attributes with cron expressions.

2. Custom Seeding

Programmatic seeding using custom logic for TimeTicker and CronTicker jobs.

3. Disabling Seeding

How to prevent automatic seeding when you manage jobs manually.

Seeding Order

When using Entity Framework Core persistence, seeding occurs in the following order on application startup:

1. Dead node resource cleanup - Releases resources from dead nodes
2. Automatic cron seeding (if enabled) - Seeds cron jobs from [TickerFunction] attributes
3. Custom time ticker seeding (if configured) - Executes UseTickerSeeder time ticker function
4. Custom cron ticker seeding (if configured) - Executes UseTickerSeeder cron ticker function

Seeding Lifecycle

Seeding happens automatically when:

• Application starts (via IHostApplicationLifetime.ApplicationStarted)
• Entity Framework Core persistence is configured
• UseTickerQ() is called

All seeding operations are logged through the instrumentation system, allowing you to track seeding progress.

See Also

• Automatic Cron Seeding - Learn about attribute-based seeding
• Custom Seeding - Implement your own seeding logic
• Disable Seeding - Prevent automatic seeding
• Entity Framework Configuration - Complete EF Core setup