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+---
+title: Background tasks
+use_cases: >-
+  background tasks, scheduled jobs, periodic jobs, cron, automation
+tags:
+  - cron
+  - nitro
+  - tasks
+  - solidstart
+version: "1.0"
+description: >-
+  Schedule background tasks in SolidStart using Nitro's Tasks API for periodic
+  jobs and automated server-side operations.
+---
+
+SolidStart supports scheduled background tasks through [Nitro's Tasks API](https://nitro.build/guide/tasks).
+Background tasks are server-side operations that run independently of the user request-response cycle.
+They are typically used for time-consuming or periodic work like data processing or maintenance jobs.
+These tasks execute on the server and can be triggered on a schedule or programmatically.
+
+For details on which hosting platforms support scheduled tasks (including platform-specific native integrations like Cloudflare Cron Triggers and Vercel Cron Jobs), see the [Nitro documentation on platform support](https://nitro.build/docs/tasks#platform-support).
+
+## Configuration
+
+Tasks are an experimental feature and must be explicitly enabled:
+
+```ts title="app.config.ts"
+import { defineConfig } from "@solidjs/start/config";
+
+export default defineConfig({
+	server: {
+		experimental: {
+			tasks: true,
+		},
+	},
+});
+```
+
+## Creating a task
+
+To create a task:
+
+1. Create a task file in the `tasks/` directory at your project root (not inside `src/`).
+2. Use the `defineTask` function to define a task and `export default` the result.
+
+```ts title="tasks/cleanup-sessions.ts"
+import { defineTask } from "nitropack/runtime";
+
+export default defineTask({
+	meta: {
+		name: "cleanup-sessions",
+		description: "Remove stale database sessions",
+	},
+	async run() {
+		// Delete expired sessions older than 7 days
+		const deletedSessions = await db.session.deleteMany({
+			where: {
+				lastActive: {
+					lt: new Date(Date.now() - 7 * 24 * 60 * 60 * 1000),
+				},
+			},
+		});
+		console.log(`Cleanup complete: ${deletedSessions.count} sessions deleted`);
+		return { result: { deletedSessions } };
+	},
+});
+```
+
+:::note
+`nitropack` is a transitive dependency of SolidStart.
+If TypeScript can't resolve the import, add it as a dev dependency:
+
+```package-install-dev
+nitropack
+```
+
+:::
+
+Refer to the [Nitro documentation](https://nitro.build/docs/tasks#task-interface) to learn more about `defineTask`.
+
+## Scheduling tasks
+
+To run a task automatically on a schedule, add a `scheduledTasks` object to your `app.config.ts`.
+The key is a cron expression, and the value is the task name or an array of task names.
+When multiple tasks are assigned to the same cron expression, they run in parallel.
+
+```ts title="app.config.ts"
+import { defineConfig } from "@solidjs/start/config";
+
+export default defineConfig({
+	server: {
+		experimental: {
+			tasks: true,
+		},
+		scheduledTasks: {
+			// Run at midnight every day
+			"0 0 * * *": "cleanup-sessions",
+		},
+	},
+});
+```
+
+:::tip
+You can use [crontab.guru](https://crontab.guru/) to help generate and understand cron patterns.
+:::
+
+## Running tasks on demand
+
+You can trigger a task manually via the Nitro task endpoint during development using a `GET` request:
+
+```sh
+curl http://localhost:3000/_nitro/tasks/cleanup-sessions
+```
+
+This is useful for testing your task logic without waiting for the scheduled time.