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URL: https://dev.to/0012303/triggerdev-has-a-free-background-jobs-platform-cron-queues-and-ai-tasks-for-typescript-3cd6

⇱ Trigger.dev Has a Free Background Jobs Platform — Cron, Queues, and AI Tasks for TypeScript - DEV Community

Background jobs in JavaScript have always been painful. BullMQ needs Redis. Cron needs infrastructure. Trigger.dev just works — write a function, it runs in the background.

What is Trigger.dev?

Trigger.dev is an open-source platform for running background jobs, scheduled tasks, and long-running workflows in TypeScript. Think of it as "Vercel for background jobs."

Why Trigger.dev Solves Real Problems

1. Define Jobs as TypeScript Functions 

import { task } from "@trigger.dev/sdk/v3";

export const processVideo = task({
 id: "process-video",
 run: async (payload: { videoUrl: string; userId: string }) => {
 // Download video
 const video = await downloadVideo(payload.videoUrl);

 // Generate thumbnail
 const thumbnail = await generateThumbnail(video);

 // Transcribe
 const transcript = await transcribeAudio(video);

 // Save results
 await db.videos.update({
 where: { userId: payload.userId },
 data: { thumbnail, transcript, status: "processed" },
 });

 return { success: true };
 },
});

2. Trigger from Your App 

// From your Next.js API route, Express handler, etc.
import { processVideo } from "@/trigger/process-video";

export async function POST(req: Request) {
 const { videoUrl, userId } = await req.json();

 // Trigger background job
 const handle = await processVideo.trigger({ videoUrl, userId });

 return Response.json({ jobId: handle.id });
}

3. Scheduled Tasks (Cron) 

import { schedules } from "@trigger.dev/sdk/v3";

export const dailyReport = schedules.task({
 id: "daily-report",
 cron: "0 9 * * *", // 9 AM daily
 run: async () => {
 const stats = await db.getYesterdayStats();
 await sendSlackMessage(`Daily report: ${stats.revenue} revenue, ${stats.signups} signups`);
 },
});

4. Long-Running Tasks (Up to 5 Hours) 

export const aiPipeline = task({
 id: "ai-pipeline",
 maxDuration: 300, // 5 minutes
 run: async (payload: { documents: string[] }) => {
 const results = [];

 for (const doc of payload.documents) {
 // Each step can take minutes
 const embedding = await generateEmbedding(doc);
 const analysis = await analyzeWithGPT4(doc);
 results.push({ embedding, analysis });
 }

 return results;
 },
});

5. Retry and Error Handling 

export const sendEmail = task({
 id: "send-email",
 retry: {
 maxAttempts: 3,
 factor: 2,
 minTimeoutInMs: 1000,
 maxTimeoutInMs: 30000,
 },
 run: async (payload: { to: string; subject: string; body: string }) => {
 await emailService.send(payload);
 },
});

6. Dashboard and Observability

Real-time dashboard shows:

  • Job status (running, completed, failed)
  • Execution timeline
  • Logs and errors
  • Retry history
  • Performance metrics

Trigger.dev vs BullMQ vs Inngest

Trigger.dev BullMQ Inngest
Infrastructure Managed/self-host Redis required Managed/self-host
Language TypeScript Node.js TypeScript
Cron Built-in Via separate setup Built-in
Dashboard Built-in Bull Board (separate) Built-in
Max duration 5 hours Unlimited 1 hour
Retries Built-in Built-in Built-in
Self-hosted Yes Yes Yes

Free Tier

Feature Free
Runs/month 10,000
Concurrent jobs 5
Log retention 7 days
Cron jobs 5

Getting Started 

npx trigger.dev@latest init
npx trigger.dev@latest dev

The Bottom Line

Trigger.dev makes background jobs as easy as writing a function. No Redis, no queue infrastructure, no cron servers. Write TypeScript, it runs in the background.

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