Schedule messages to HTTP endpoints, manage task queues, and broadcast real-time events to connected clients.
Serverless messaging
Schedule tasks that call your HTTP endpoints with payloads, manage queues for serverless functions, and broadcast real-time events to frontends with presence tracking and bidirectional messaging.
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Capabilities
Schedule messages that call your HTTP endpoints with payloads for serverless platforms.
Organize tasks into queues with priority levels, delays, and rate limiting.
Publish events to channels and enable bidirectional messaging between clients and servers.
Track who is online in real time and notify when users join or leave channels.
Managed Redis clusters for caching, session storage, and real-time data with automatic failover.
Run recurring tasks with cron syntax or one-time messages with timezone support.
Subscribe to events with pattern matching and route to handlers without message brokers.
Automatic retries with exponential backoff and dead-letter handling for failures.
Run recurring tasks with cron syntax or one-time messages with timezone support.
Subscribe to events with pattern matching and route to handlers without message brokers.
Automatic retries with exponential backoff and dead-letter handling for failures.
Time from schedule to callback invocation
Messages delivered after retry attempts
Per-queue throughput capacity
Why it matters
Process uploaded videos by scheduling a task with the video ID. For example, the task calls your /api/process-video endpoint on Vercel with the payload. Your function runs, processes the video, and returns. No workers needed.
Create an email-queue with rate limiting at 100 messages per minute. Schedule 10,000 email tasks. Your /api/send-email endpoint gets called at the rate limit without overwhelming your system or managing queue infrastructure.
Build a collaborative document editor where users see each other's cursor positions in real time. Subscribe to the document channel, publish cursor updates, and use presence to show who is viewing. No infrastructure to manage.
Built for Your Workflow
Schedule a task with your endpoint URL and payload. Relay calls your function when scheduled, regardless of how long processing takes. Your function completes on its own timeline without timeout pressure.
Handle long-running work on Lambda or Vercel without hitting timeout limits.
Configure rate limits per queue to control delivery pace. Queue 10,000 tasks and Relay delivers them at your specified rate, respecting downstream API limits without custom throttling code.
Process bulk operations at controlled rates without building rate limiting logic.
Schedule recurring tasks with cron syntax and timezone support. Relay calls your endpoint at the scheduled time. Edit or cancel scheduled tasks before execution.
Run daily reports and scheduled jobs without EC2 instances or crontab maintenance.
Subscribe clients to channels and publish events that reach all subscribers instantly. Track presence to show who is online, and enable bidirectional messaging between clients and servers.
Ship live notifications and collaborative features without running WebSocket servers.
Features
Each feature is designed to handle asynchronous tasks and real-time messaging without managing infrastructure.
In-memory key-value storage with Redis-compatible commands.
Pub/sub messaging for distributed systems and event-driven architectures.
Task queues with retries, delays, and dead letter handling.
Real-time bidirectional communication with presence and channels.
Schedule recurring tasks with cron expressions and one-time triggers.
FAQ
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