chore: import upstream snapshot with attribution
This commit is contained in:
@@ -0,0 +1,485 @@
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# Trigger.dev Advanced Tasks (v4)
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**Advanced patterns and features for writing tasks**
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## Tags & Organization
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```ts
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import { task, tags } from "@trigger.dev/sdk";
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export const processUser = task({
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id: "process-user",
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run: async (payload: { userId: string; orgId: string }, { ctx }) => {
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// Add tags during execution
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await tags.add(`user_${payload.userId}`);
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await tags.add(`org_${payload.orgId}`);
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return { processed: true };
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},
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});
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// Trigger with tags
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await processUser.trigger(
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{ userId: "123", orgId: "abc" },
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{ tags: ["priority", "user_123", "org_abc"] } // Max 10 tags per run
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);
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// Subscribe to tagged runs
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for await (const run of runs.subscribeToRunsWithTag("user_123")) {
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console.log(`User task ${run.id}: ${run.status}`);
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}
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```
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**Tag Best Practices:**
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- Use prefixes: `user_123`, `org_abc`, `video:456`
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- Max 10 tags per run, 1-64 characters each
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- Tags don't propagate to child tasks automatically
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## Batch Triggering v2
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Enhanced batch triggering with larger payloads and streaming ingestion.
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### Limits
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- **Maximum batch size**: 1,000 items (increased from 500)
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- **Payload per item**: 3MB each (increased from 1MB combined)
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- Payloads > 512KB automatically offload to object storage
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### Rate Limiting (per environment)
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| Tier | Bucket Size | Refill Rate |
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|------|-------------|-------------|
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| Free | 1,200 runs | 100 runs/10 sec |
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| Hobby | 5,000 runs | 500 runs/5 sec |
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| Pro | 5,000 runs | 500 runs/5 sec |
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### Concurrent Batch Processing
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| Tier | Concurrent Batches |
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|------|-------------------|
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| Free | 1 |
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| Hobby | 10 |
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| Pro | 10 |
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### Usage
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```ts
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import { myTask } from "./trigger/myTask";
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// Basic batch trigger (up to 1,000 items)
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const runs = await myTask.batchTrigger([
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{ payload: { userId: "user-1" } },
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{ payload: { userId: "user-2" } },
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{ payload: { userId: "user-3" } },
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]);
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// Batch trigger with wait
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const results = await myTask.batchTriggerAndWait([
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{ payload: { userId: "user-1" } },
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{ payload: { userId: "user-2" } },
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]);
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for (const result of results) {
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if (result.ok) {
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console.log("Result:", result.output);
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}
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}
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// With per-item options
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const batchHandle = await myTask.batchTrigger([
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{
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payload: { userId: "123" },
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options: {
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idempotencyKey: "user-123-batch",
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tags: ["priority"],
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},
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},
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{
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payload: { userId: "456" },
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options: {
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idempotencyKey: "user-456-batch",
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},
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},
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]);
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```
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## Debouncing
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Consolidate multiple triggers into a single execution by debouncing task runs with a unique key and delay window.
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### Use Cases
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- **User activity updates**: Batch rapid user actions into a single run
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- **Webhook deduplication**: Handle webhook bursts without redundant processing
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- **Search indexing**: Combine document updates instead of processing individually
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- **Notification batching**: Group notifications to prevent user spam
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### Basic Usage
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```ts
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await myTask.trigger(
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{ userId: "123" },
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{
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debounce: {
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key: "user-123-update", // Unique identifier for debounce group
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delay: "5s", // Wait duration ("5s", "1m", or milliseconds)
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},
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}
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);
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```
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### Execution Modes
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**Leading Mode** (default): Uses payload/options from the first trigger; subsequent triggers only reschedule execution time.
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```ts
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// First trigger sets the payload
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await myTask.trigger({ action: "first" }, {
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debounce: { key: "my-key", delay: "10s" }
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});
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// Second trigger only reschedules - payload remains "first"
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await myTask.trigger({ action: "second" }, {
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debounce: { key: "my-key", delay: "10s" }
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});
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// Task executes with { action: "first" }
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```
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**Trailing Mode**: Uses payload/options from the most recent trigger.
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```ts
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await myTask.trigger(
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{ data: "latest-value" },
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{
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debounce: {
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key: "trailing-example",
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delay: "10s",
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mode: "trailing",
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},
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}
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);
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```
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In trailing mode, these options update with each trigger:
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- `payload` — task input data
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- `metadata` — run metadata
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- `tags` — run tags (replaces existing)
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- `maxAttempts` — retry attempts
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- `maxDuration` — maximum compute time
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- `machine` — machine preset
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### Important Notes
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- Idempotency keys take precedence over debounce settings
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- Compatible with `triggerAndWait()` — parent runs block correctly on debounced execution
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- Debounce key is scoped to the task
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## Concurrency & Queues
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```ts
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import { task, queue } from "@trigger.dev/sdk";
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// Shared queue for related tasks
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const emailQueue = queue({
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name: "email-processing",
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concurrencyLimit: 5, // Max 5 emails processing simultaneously
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});
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// Task-level concurrency
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export const oneAtATime = task({
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id: "sequential-task",
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queue: { concurrencyLimit: 1 }, // Process one at a time
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run: async (payload) => {
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// Critical section - only one instance runs
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},
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});
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// Per-user concurrency
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export const processUserData = task({
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id: "process-user-data",
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run: async (payload: { userId: string }) => {
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// Override queue with user-specific concurrency
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await childTask.trigger(payload, {
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queue: {
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name: `user-${payload.userId}`,
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concurrencyLimit: 2,
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},
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});
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},
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});
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export const emailTask = task({
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id: "send-email",
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queue: emailQueue, // Use shared queue
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run: async (payload: { to: string }) => {
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// Send email logic
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},
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});
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```
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## Error Handling & Retries
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```ts
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import { task, retry, AbortTaskRunError } from "@trigger.dev/sdk";
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export const resilientTask = task({
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id: "resilient-task",
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retry: {
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maxAttempts: 10,
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factor: 1.8, // Exponential backoff multiplier
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minTimeoutInMs: 500,
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maxTimeoutInMs: 30_000,
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randomize: false,
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},
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catchError: async ({ error, ctx }) => {
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// Custom error handling
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if (error.code === "FATAL_ERROR") {
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throw new AbortTaskRunError("Cannot retry this error");
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}
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// Log error details
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console.error(`Task ${ctx.task.id} failed:`, error);
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// Allow retry by returning nothing
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return { retryAt: new Date(Date.now() + 60000) }; // Retry in 1 minute
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},
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run: async (payload) => {
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// Retry specific operations
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const result = await retry.onThrow(
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async () => {
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return await unstableApiCall(payload);
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},
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{ maxAttempts: 3 }
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);
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// Conditional HTTP retries
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const response = await retry.fetch("https://api.example.com", {
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retry: {
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maxAttempts: 5,
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condition: (response, error) => {
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return response?.status === 429 || response?.status >= 500;
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},
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},
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});
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return result;
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},
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});
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```
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## Machines & Performance
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```ts
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export const heavyTask = task({
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id: "heavy-computation",
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machine: { preset: "large-2x" }, // 8 vCPU, 16 GB RAM
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maxDuration: 1800, // 30 minutes timeout
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run: async (payload, { ctx }) => {
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// Resource-intensive computation
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if (ctx.machine.preset === "large-2x") {
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// Use all available cores
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return await parallelProcessing(payload);
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}
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return await standardProcessing(payload);
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},
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});
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// Override machine when triggering
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await heavyTask.trigger(payload, {
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machine: { preset: "medium-1x" }, // Override for this run
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});
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```
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**Machine Presets:**
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- `micro`: 0.25 vCPU, 0.25 GB RAM
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- `small-1x`: 0.5 vCPU, 0.5 GB RAM (default)
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- `small-2x`: 1 vCPU, 1 GB RAM
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- `medium-1x`: 1 vCPU, 2 GB RAM
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- `medium-2x`: 2 vCPU, 4 GB RAM
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- `large-1x`: 4 vCPU, 8 GB RAM
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- `large-2x`: 8 vCPU, 16 GB RAM
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## Idempotency
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```ts
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import { task, idempotencyKeys } from "@trigger.dev/sdk";
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export const paymentTask = task({
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id: "process-payment",
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retry: {
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maxAttempts: 3,
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},
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run: async (payload: { orderId: string; amount: number }) => {
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// Automatically scoped to this task run, so if the task is retried, the idempotency key will be the same
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const idempotencyKey = await idempotencyKeys.create(`payment-${payload.orderId}`);
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// Ensure payment is processed only once
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await chargeCustomer.trigger(payload, {
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idempotencyKey,
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idempotencyKeyTTL: "24h", // Key expires in 24 hours
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});
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},
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});
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// Payload-based idempotency
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import { createHash } from "node:crypto";
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function createPayloadHash(payload: any): string {
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const hash = createHash("sha256");
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hash.update(JSON.stringify(payload));
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return hash.digest("hex");
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}
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export const deduplicatedTask = task({
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id: "deduplicated-task",
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run: async (payload) => {
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const payloadHash = createPayloadHash(payload);
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const idempotencyKey = await idempotencyKeys.create(payloadHash);
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await processData.trigger(payload, { idempotencyKey });
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},
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});
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```
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## Metadata & Progress Tracking
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```ts
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import { task, metadata } from "@trigger.dev/sdk";
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export const batchProcessor = task({
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id: "batch-processor",
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run: async (payload: { items: any[] }, { ctx }) => {
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const totalItems = payload.items.length;
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// Initialize progress metadata
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metadata
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.set("progress", 0)
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.set("totalItems", totalItems)
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.set("processedItems", 0)
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.set("status", "starting");
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const results = [];
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for (let i = 0; i < payload.items.length; i++) {
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const item = payload.items[i];
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// Process item
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const result = await processItem(item);
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results.push(result);
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// Update progress
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const progress = ((i + 1) / totalItems) * 100;
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metadata
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.set("progress", progress)
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.increment("processedItems", 1)
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.append("logs", `Processed item ${i + 1}/${totalItems}`)
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.set("currentItem", item.id);
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}
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// Final status
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metadata.set("status", "completed");
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return { results, totalProcessed: results.length };
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},
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});
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// Update parent metadata from child task
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export const childTask = task({
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id: "child-task",
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run: async (payload, { ctx }) => {
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// Update parent task metadata
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metadata.parent.set("childStatus", "processing");
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metadata.root.increment("childrenCompleted", 1);
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return { processed: true };
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},
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});
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```
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## Logging & Tracing
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```ts
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import { task, logger } from "@trigger.dev/sdk";
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export const tracedTask = task({
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id: "traced-task",
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run: async (payload, { ctx }) => {
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logger.info("Task started", { userId: payload.userId });
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// Custom trace with attributes
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const user = await logger.trace(
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"fetch-user",
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async (span) => {
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span.setAttribute("user.id", payload.userId);
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span.setAttribute("operation", "database-fetch");
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const userData = await database.findUser(payload.userId);
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span.setAttribute("user.found", !!userData);
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return userData;
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},
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{ userId: payload.userId }
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);
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logger.debug("User fetched", { user: user.id });
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try {
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const result = await processUser(user);
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logger.info("Processing completed", { result });
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return result;
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} catch (error) {
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logger.error("Processing failed", {
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error: error.message,
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userId: payload.userId,
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});
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throw error;
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}
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},
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});
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```
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## Hidden Tasks
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```ts
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// Hidden task - not exported, only used internally
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const internalProcessor = task({
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id: "internal-processor",
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run: async (payload: { data: string }) => {
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return { processed: payload.data.toUpperCase() };
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},
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});
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// Public task that uses hidden task
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export const publicWorkflow = task({
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id: "public-workflow",
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run: async (payload: { input: string }) => {
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// Use hidden task internally
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const result = await internalProcessor.triggerAndWait({
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data: payload.input,
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});
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if (result.ok) {
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return { output: result.output.processed };
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}
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throw new Error("Internal processing failed");
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},
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});
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```
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## Best Practices
|
||||
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- **Concurrency**: Use queues to prevent overwhelming external services
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- **Retries**: Configure exponential backoff for transient failures
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- **Idempotency**: Always use for payment/critical operations
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- **Metadata**: Track progress for long-running tasks
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- **Machines**: Match machine size to computational requirements
|
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- **Tags**: Use consistent naming patterns for filtering
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- **Debouncing**: Use for user activity, webhooks, and notification batching
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- **Batch triggering**: Use for bulk operations up to 1,000 items
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- **Error Handling**: Distinguish between retryable and fatal errors
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Design tasks to be stateless, idempotent, and resilient to failures. Use metadata for state tracking and queues for resource management.
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@@ -0,0 +1,199 @@
|
||||
# Trigger.dev Basic Tasks (v4)
|
||||
|
||||
**MUST use `@trigger.dev/sdk`, NEVER `client.defineJob`**
|
||||
|
||||
## Basic Task
|
||||
|
||||
```ts
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import { task } from "@trigger.dev/sdk";
|
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|
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export const processData = task({
|
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id: "process-data",
|
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retry: {
|
||||
maxAttempts: 10,
|
||||
factor: 1.8,
|
||||
minTimeoutInMs: 500,
|
||||
maxTimeoutInMs: 30_000,
|
||||
randomize: false,
|
||||
},
|
||||
run: async (payload: { userId: string; data: any[] }) => {
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// Task logic - runs for long time, no timeouts
|
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console.log(`Processing ${payload.data.length} items for user ${payload.userId}`);
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return { processed: payload.data.length };
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||||
},
|
||||
});
|
||||
```
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|
||||
## Schema Task (with validation)
|
||||
|
||||
```ts
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||||
import { schemaTask } from "@trigger.dev/sdk";
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import { z } from "zod";
|
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|
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export const validatedTask = schemaTask({
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id: "validated-task",
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||||
schema: z.object({
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name: z.string(),
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||||
age: z.number(),
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email: z.string().email(),
|
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}),
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run: async (payload) => {
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// Payload is automatically validated and typed
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||||
return { message: `Hello ${payload.name}, age ${payload.age}` };
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||||
},
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||||
});
|
||||
```
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||||
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||||
## Triggering Tasks
|
||||
|
||||
### From Backend Code
|
||||
|
||||
```ts
|
||||
import { tasks } from "@trigger.dev/sdk";
|
||||
import type { processData } from "./trigger/tasks";
|
||||
|
||||
// Single trigger
|
||||
const handle = await tasks.trigger<typeof processData>("process-data", {
|
||||
userId: "123",
|
||||
data: [{ id: 1 }, { id: 2 }],
|
||||
});
|
||||
|
||||
// Batch trigger (up to 1,000 items, 3MB per payload)
|
||||
const batchHandle = await tasks.batchTrigger<typeof processData>("process-data", [
|
||||
{ payload: { userId: "123", data: [{ id: 1 }] } },
|
||||
{ payload: { userId: "456", data: [{ id: 2 }] } },
|
||||
]);
|
||||
```
|
||||
|
||||
### Debounced Triggering
|
||||
|
||||
Consolidate multiple triggers into a single execution:
|
||||
|
||||
```ts
|
||||
// Multiple rapid triggers with same key = single execution
|
||||
await myTask.trigger(
|
||||
{ userId: "123" },
|
||||
{
|
||||
debounce: {
|
||||
key: "user-123-update", // Unique key for debounce group
|
||||
delay: "5s", // Wait before executing
|
||||
},
|
||||
}
|
||||
);
|
||||
|
||||
// Trailing mode: use payload from LAST trigger
|
||||
await myTask.trigger(
|
||||
{ data: "latest-value" },
|
||||
{
|
||||
debounce: {
|
||||
key: "trailing-example",
|
||||
delay: "10s",
|
||||
mode: "trailing", // Default is "leading" (first payload)
|
||||
},
|
||||
}
|
||||
);
|
||||
```
|
||||
|
||||
**Debounce modes:**
|
||||
- `leading` (default): Uses payload from first trigger, subsequent triggers only reschedule
|
||||
- `trailing`: Uses payload from most recent trigger
|
||||
|
||||
### From Inside Tasks (with Result handling)
|
||||
|
||||
```ts
|
||||
export const parentTask = task({
|
||||
id: "parent-task",
|
||||
run: async (payload) => {
|
||||
// Trigger and continue
|
||||
const handle = await childTask.trigger({ data: "value" });
|
||||
|
||||
// Trigger and wait - returns Result object, NOT task output
|
||||
const result = await childTask.triggerAndWait({ data: "value" });
|
||||
if (result.ok) {
|
||||
console.log("Task output:", result.output); // Actual task return value
|
||||
} else {
|
||||
console.error("Task failed:", result.error);
|
||||
}
|
||||
|
||||
// Quick unwrap (throws on error)
|
||||
const output = await childTask.triggerAndWait({ data: "value" }).unwrap();
|
||||
|
||||
// Batch trigger and wait
|
||||
const results = await childTask.batchTriggerAndWait([
|
||||
{ payload: { data: "item1" } },
|
||||
{ payload: { data: "item2" } },
|
||||
]);
|
||||
|
||||
for (const run of results) {
|
||||
if (run.ok) {
|
||||
console.log("Success:", run.output);
|
||||
} else {
|
||||
console.log("Failed:", run.error);
|
||||
}
|
||||
}
|
||||
},
|
||||
});
|
||||
|
||||
export const childTask = task({
|
||||
id: "child-task",
|
||||
run: async (payload: { data: string }) => {
|
||||
return { processed: payload.data };
|
||||
},
|
||||
});
|
||||
```
|
||||
|
||||
> Never wrap triggerAndWait or batchTriggerAndWait calls in a Promise.all or Promise.allSettled as this is not supported in Trigger.dev tasks.
|
||||
|
||||
## Waits
|
||||
|
||||
```ts
|
||||
import { task, wait } from "@trigger.dev/sdk";
|
||||
|
||||
export const taskWithWaits = task({
|
||||
id: "task-with-waits",
|
||||
run: async (payload) => {
|
||||
console.log("Starting task");
|
||||
|
||||
// Wait for specific duration
|
||||
await wait.for({ seconds: 30 });
|
||||
await wait.for({ minutes: 5 });
|
||||
await wait.for({ hours: 1 });
|
||||
await wait.for({ days: 1 });
|
||||
|
||||
// Wait until specific date
|
||||
await wait.until({ date: new Date("2024-12-25") });
|
||||
|
||||
// Wait for token (from external system)
|
||||
await wait.forToken({
|
||||
token: "user-approval-token",
|
||||
timeoutInSeconds: 3600, // 1 hour timeout
|
||||
});
|
||||
|
||||
console.log("All waits completed");
|
||||
return { status: "completed" };
|
||||
},
|
||||
});
|
||||
```
|
||||
|
||||
> Never wrap wait calls in a Promise.all or Promise.allSettled as this is not supported in Trigger.dev tasks.
|
||||
|
||||
## Key Points
|
||||
|
||||
- **Result vs Output**: `triggerAndWait()` returns a `Result` object with `ok`, `output`, `error` properties - NOT the direct task output
|
||||
- **Type safety**: Use `import type` for task references when triggering from backend
|
||||
- **Waits > 5 seconds**: Automatically checkpointed, don't count toward compute usage
|
||||
- **Debounce + idempotency**: Idempotency keys take precedence over debounce settings
|
||||
|
||||
## NEVER Use (v2 deprecated)
|
||||
|
||||
```ts
|
||||
// BREAKS APPLICATION
|
||||
client.defineJob({
|
||||
id: "job-id",
|
||||
run: async (payload, io) => {
|
||||
/* ... */
|
||||
},
|
||||
});
|
||||
```
|
||||
|
||||
Use SDK (`@trigger.dev/sdk`), check `result.ok` before accessing `result.output`
|
||||
Reference in New Issue
Block a user