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Alex Spinov
Alex Spinov

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Temporal Has a Free Durable Workflow Engine That Never Loses Your State

#temporal #workflow #distributed #typescript

What happens when your payment processing crashes mid-transaction? With regular code — data loss. With Temporal — it resumes exactly where it left off. Temporal makes your workflows durable, reliable, and resumable by default.

What Temporal Gives You for Free

  • Durable execution — workflows survive crashes, restarts, and deployments
  • Automatic retries — configurable retry policies per activity
  • Long-running workflows — days, weeks, months
  • Timers — sleep for hours/days without holding resources
  • Versioning — update workflow code without breaking running instances
  • Visibility — web UI showing all workflow states
  • TypeScript SDK — fully typed, great DX
  • Self-hosted — Docker Compose or Kubernetes

Quick Start 

# Run Temporal server
docker compose up -d

# Create project
npx @temporalio/create@latest my-app
cd my-app
npm run start
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Define a Workflow 

// workflows.ts
import { proxyActivities, sleep } from '@temporalio/workflow';
import type * as activities from './activities';

const { sendEmail, chargePayment, provisionAccount } = proxyActivities<typeof activities>({
  startToCloseTimeout: '30 seconds',
  retry: { maximumAttempts: 3 }
});

export async function onboardUser(email: string, plan: string): Promise<void> {
  // Step 1: Send welcome email
  await sendEmail(email, 'Welcome!');

  // Step 2: Charge payment
  const paymentId = await chargePayment(email, plan);

  // Step 3: Provision account
  await provisionAccount(email, plan);

  // Step 4: Wait 3 days, then send tips
  await sleep('3 days'); // Durable! Survives server restarts.
  await sendEmail(email, 'Here are some tips...');

  // Step 5: Wait 7 days, check engagement
  await sleep('7 days');
  await sendEmail(email, 'How\'s it going?');
}
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If the server crashes after Step 2, Temporal resumes at Step 3 — not from the beginning.

Activities (Side Effects) 

// activities.ts
export async function sendEmail(to: string, subject: string): Promise<void> {
  await resend.emails.send({ to, subject, from: 'app@company.com' });
}

export async function chargePayment(email: string, plan: string): Promise<string> {
  const session = await stripe.checkout.sessions.create({
    customer_email: email,
    line_items: [{ price: plans[plan], quantity: 1 }]
  });
  return session.id;
}

export async function provisionAccount(email: string, plan: string): Promise<void> {
  await db.accounts.create({ data: { email, plan, status: 'active' } });
}
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Start a Workflow 

import { Client } from '@temporalio/client';

const client = new Client();

const handle = await client.workflow.start('onboardUser', {
  taskQueue: 'main',
  workflowId: `onboard-${userId}`,
  args: ['user@example.com', 'pro']
});

// Check status
const result = await handle.result();
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Use Cases

  • Payment processing — charge, fulfill, refund with guaranteed completion
  • User onboarding — multi-day sequences that never lose state
  • Data pipelines — ETL that resumes from where it failed
  • Order fulfillment — payment → inventory → shipping → notification
  • Subscription management — billing cycles, upgrades, cancellations

Temporal vs BullMQ vs Inngest vs Trigger.dev

Feature Temporal BullMQ Inngest Trigger.dev
Durable execution Core feature No Yes Yes
Long-running Days/months Hours Limited Hours
Workflow state Automatic Manual Automatic Manual
Versioning Built-in None None None
Visibility UI Full Bull Board Dashboard Dashboard
Self-hosted Yes Yes (Redis) No No
Complexity Medium Low Low Low

The Verdict

Temporal is for workflows that MUST complete — payment processing, order fulfillment, data pipelines. If a crash or restart can lose your state, Temporal prevents it. Enterprise-grade reliability for any application.

Need help building production web scrapers or data pipelines? I build custom solutions. Reach out: spinov001@gmail.com

Check out my awesome-web-scraping collection — 400+ tools for extracting web data.

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