inngest-durable-functions

Fault-tolerant workflows use durable functions with memoized steps, configurable retries, and cancellation policies to ensure deterministic progress and automatic recovery from intermittent failures during execution.

Durable functions are a pattern for long-running automations that persist state through memoization and idempotency, ensuring progress is never lost and duplicate executions are prevented during retries.

Idempotency in data pipelines is achieved through memoized step execution, which persists state across retries and prevents duplicate side effects by caching completed steps within the durable workflow.

Durable workflows support multiple trigger types including cron schedules, event-driven hooks, and manual invoke hooks to start long-running automations and event-driven data pipelines.

Observability for long-running automations is implemented through structured logging and tracing, providing end-to-end visibility into step execution, memoization, and error handling within the workflow.

Workflows lose progress without state persistence, but durable functions use memoization to save progress after each step, allowing failed workflows to resume from the last successful checkpoint instead of restarting.