Inngest is an open-source durable execution platform for building reliable background tasks, workflows, and AI agents without additional infrastructure. It provides automatic retries, flow control, and step-level observability, with the goal of making every backend "unbreakable." Its official tagline calls it the fastest way to orchestrate all asynchronous code: wrap functions into steps to handle any event at any scale, enabling pause, fan-out, delay, retries, and A/B testing—one SDK, zero additional infrastructure.
Key Capabilities
- Observability: Without custom instrumentation, Inngest provides observability by default when executing functions, allowing you to trace the full path of every background task, agent, and event from trigger to completion, and use this data to evaluate results on real production traffic.
- Flow Control: Basic queues cannot handle situations where multiple users compete for the same resource. Inngest's flow control ensures each user gets a fair share, avoiding noisy neighbors, hand-written rate limiting, and wasted compute.
- Sandbox: Sandboxes also need durability. You can run new prompts, models, or code paths in isolated sandboxes, using the same triggers and data as the real environment, and compare results before release.
- A/B Testing and Scoring: Inngest captures all data by default, so scoring can be added as easily as retries to determine which variant performs better, without stitching data together from multiple systems or manual review.
Usage
Official quick-start guidance is provided, covering three technology stacks: TypeScript + Next.js, TypeScript + Node.js, and Python + FastAPI. Specific installation and integration steps can be obtained through the documentation. Users can add durable functions to existing code, keeping event-driven workflows, background tasks, and agents running continuously without provisioning or maintaining infrastructure.
Use Cases
- Background Tasks: Make any background task reliable with one line of code, with automatic retries, recovery, and observability.
- Message Queues: Durable message queues without Redis or a message broker, with built-in flow control.
- Workflow Orchestration: Multi-step workflow orchestration in code, where functions can checkpoint, wait, and fan out across steps.
- Scheduled and cron tasks: Run scheduled tasks and cron tasks as functions, with support for sleeping, fan-out, parallelism, retries, and recovery.
- Webhooks and Events: Reliably handle webhooks and event-driven functions, automatically retry failures, and show what happened.
- Serverless Background Tasks: Replace your serverless background task stack with one SDK that can be embedded into an existing codebase.
Security and Performance
- SOC 2 compliant, with regular security audits.
- Encrypt all data passing through Inngest via end-to-end encryption middleware.
- Enterprise customers are supported with SSO and SAML.
- Over 100,000 executions per second, built for heavy loads and burst traffic.
- Low latency for all functions.
- HIPAA BAA can be provided for handling sensitive data.
Limitations
Official materials do not clearly state the platform's specific limitations, pricing, free tier, or usage thresholds; this information is not currently available.
