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.agents/skills/cloudflare-deploy/references/queues/configuration.md

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+# Queues Configuration
+
+## Create Queue
+
+```bash
+wrangler queues create my-queue
+wrangler queues create my-queue --retention-period-hours=336  # 14 days
+wrangler queues create my-queue --delivery-delay-secs=300
+```
+
+## Producer Binding
+
+**wrangler.jsonc:**
+```jsonc
+{
+  "queues": {
+    "producers": [
+      {
+        "queue": "my-queue-name",
+        "binding": "MY_QUEUE",
+        "delivery_delay": 60  // Optional: default delay in seconds
+      }
+    ]
+  }
+}
+```
+
+## Consumer Configuration (Push-based)
+
+**wrangler.jsonc:**
+```jsonc
+{
+  "queues": {
+    "consumers": [
+      {
+        "queue": "my-queue-name",
+        "max_batch_size": 10,           // 1-100, default 10
+        "max_batch_timeout": 5,         // 0-60s, default 5
+        "max_retries": 3,               // default 3, max 100
+        "dead_letter_queue": "my-dlq",  // optional
+        "retry_delay": 300              // optional: delay retries in seconds
+      }
+    ]
+  }
+}
+```
+
+## Consumer Configuration (Pull-based)
+
+**wrangler.jsonc:**
+```jsonc
+{
+  "queues": {
+    "consumers": [
+      {
+        "queue": "my-queue-name",
+        "type": "http_pull",
+        "visibility_timeout_ms": 5000,  // default 30000, max 12h
+        "max_retries": 5,
+        "dead_letter_queue": "my-dlq"
+      }
+    ]
+  }
+}
+```
+
+## TypeScript Types
+
+```typescript
+interface Env {
+  MY_QUEUE: Queue<MessageBody>;
+  ANALYTICS_QUEUE: Queue<AnalyticsEvent>;
+}
+
+interface MessageBody {
+  id: string;
+  action: 'create' | 'update' | 'delete';
+  data: Record<string, any>;
+}
+
+export default {
+  async queue(batch: MessageBatch<MessageBody>, env: Env): Promise<void> {
+    for (const msg of batch.messages) {
+      console.log(msg.body.action);
+      msg.ack();
+    }
+  }
+} satisfies ExportedHandler<Env>;
+```
+
+## Content Type Selection
+
+Choose content type based on consumer type and data requirements:
+
+| Content Type | Use When | Readable By | Supports | Size |
+|--------------|----------|-------------|----------|------|
+| `json` | Pull consumers, dashboard visibility, simple objects | All (push/pull/dashboard) | JSON-serializable types only | Medium |
+| `v8` | Push consumers only, complex JS objects | Push consumers only | Date, Map, Set, BigInt, typed arrays | Small |
+| `text` | String-only payloads | All | Strings only | Smallest |
+| `bytes` | Binary data (images, files) | All | ArrayBuffer, Uint8Array | Variable |
+
+**Decision tree:**
+1. Need to view in dashboard or use pull consumer? → Use `json`
+2. Need Date, Map, Set, or other V8 types? → Use `v8` (push consumers only)
+3. Just strings? → Use `text`
+4. Binary data? → Use `bytes`
+
+```typescript
+// JSON: Good for simple objects, pull consumers, dashboard visibility
+await env.QUEUE.send({ id: 123, name: 'test' }, { contentType: 'json' });
+
+// V8: Good for Date, Map, Set (push consumers only)
+await env.QUEUE.send({ 
+  created: new Date(), 
+  tags: new Set(['a', 'b']) 
+}, { contentType: 'v8' });
+
+// Text: Simple strings
+await env.QUEUE.send('process-user-123', { contentType: 'text' });
+
+// Bytes: Binary data
+await env.QUEUE.send(imageBuffer, { contentType: 'bytes' });
+```
+
+**Default behavior:** If not specified, Cloudflare auto-selects `json` for JSON-serializable objects and `v8` for complex types.
+
+**IMPORTANT:** `v8` messages cannot be read by pull consumers or viewed in the dashboard. Use `json` if you need visibility or pull-based consumption.
+
+## CLI Commands
+
+```bash
+# Consumer management
+wrangler queues consumer add my-queue my-worker --batch-size=50 --max-retries=5
+wrangler queues consumer http add my-queue
+wrangler queues consumer worker remove my-queue my-worker
+wrangler queues consumer http remove my-queue
+
+# Queue operations
+wrangler queues list
+wrangler queues pause my-queue
+wrangler queues resume my-queue
+wrangler queues purge my-queue
+wrangler queues delete my-queue
+```