Polling
Polling repeats a read on a timer to check for change. The interval can adapt, pause, or stop when work finishes.
Another example
An export page checks job status every two seconds. Polling stops as soon as the file is ready.
Main parts
- 01Read request
- 02Interval
- 03Active observer
- 04Pause rule
- 05Stop condition
Use it when
Use it for jobs that change sometimes and do not need a permanent live connection.
Do not use it when
Do not poll too often or forever. Pause when hidden or offline, and stop at a final state.
Name used in code
active observer -> interval -> refetch -> stop condition Before you ship
Check the runtime and version, integration limits, dependencies and licenses, and platform support. Verify security, failure, speed, monitoring, deploy, support owner, upgrade path, and rollback.
Outcome: Use or review Polling as a technical building block that the team can maintain. User context: An export page checks job status every two seconds. Polling stops as soon as the file is ready. Technology or engineering concept: Polling. Why it fits: Use it for jobs that change sometimes and do not need a permanent live connection. Do not use it when: Do not poll too often or forever. Pause when hidden or offline, and stop at a final state. Engineering fit: Define where it runs and which version to use. Set its job, interfaces, data flow, dependencies, supported systems, security, and speed limits. Explain how it fits the current stack. Lifecycle safeguards: Check dependency health and licenses. Add monitoring and a fallback. Name the upgrade owner. Do not add a second tool for the same job without a measured benefit. Acceptance criteria: A small integration proves the needed behavior. Test compatibility, security, failure, and performance. Document deploy, upgrade, support, and rollback steps. Evidence and limits (evidence boundary): It is official for that source. Other platforms or teams may use the term in another way. Unknowns to confirm: Current stack, runtime and version rules, target systems, dependency owner, performance budget, support period, and migration limits.
Check this request
Review the current use of Polling. Definition: Polling repeats a read on a timer to check for change. The interval can adapt, pause, or stop when work finishes. Release checks: Check the runtime and version, integration limits, dependencies and licenses, and platform support. Verify security, failure, speed, monitoring, deploy, support owner, upgrade path, and rollback. Before changing code, report the evidence you found, gaps, severity, and the smallest safe fix.