Lab · Duplicate events
What happens when the same event arrives twice?
Networks retry. A sender that times out cannot tell whether its request ran, so it sends again. Compare a handler that applies everything with one that remembers what it already did.
Interactive simulation using synthetic data
Guarded: records each event ID as executing, then completed with its result. A repeat reuses the result; a repeat with a different payload is a conflict.
Guarded handler: 0 deliveries, 0 side effects.
Guarded handler: 0 deliveries, 0 side effects.
Waiting
- Nothing queued.
Side effects (charges applied)
- None yet.
Log
- Send an event to start.
Have a role or a project in mind?
Send a note about a role, or about something you want built: an AI tool, a custom app, or a website. Questions about any app on this site are welcome too.
Email me