refreshInterval

Refresh interval is the time interval between automatic refresh cycles in software systems that poll for updates or re-render content. It is commonly expressed in seconds or milliseconds. Many applications offer a default interval and an option to disable auto-refresh by selecting off or 0. The setting is widely used in data dashboards, monitoring tools, feeds, and any UI that presents time-sensitive information.

Implementation can be client-side or server-side. In client code, a timer such as setInterval or a scheduled task triggers a data fetch at the defined interval and then refreshes the display. Some systems use more advanced techniques, such as adaptive or back-off strategies that shorten or lengthen the interval after errors or based on user activity. Alternatives to polling include push-based approaches like server-sent events or WebSockets, which reduce unnecessary requests but may still integrate a refresh interval for certain views.

Considerations include data freshness, network bandwidth, server load, and user experience. Short intervals provide up-to-date information but increase resource use and can drain battery on mobile devices. Long intervals reduce load but may leave data stale. It is common to provide user controls to adjust the interval and to offer a manual refresh option. Persisting the choice across sessions improves consistency.

Best practices involve sensible defaults, clear labeling, respecting user focus (pause auto-refresh when the tab is inactive), and implementing error handling and back-off when data fetches fail.