Answer
IOptions: singleton read. Snapshot: per-request reload. Monitor: real-time change notifications for long-running services.
Quick Answer
Three interfaces for different needs: IOptions reads config once, never changes — use in singletons for static config. IOptionsSnapshot re-reads per request — use in scoped/transient services that need fresh config on every request. IOptionsMonitor reacts to live changes — use when the app must respond to config changes without restarting.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ