How do you handle timezones for a daily global sales report?
This tests your understanding of time data modeling and business requirements. A good answer stores events in UTC with a timezone identifier, then converts to the business's chosen 'day' at query time. A red flag is storing local time without context.
This tests your ability to separate business logic from technical implementation for time-based analytics. A strong answer first clarifies the business definition of a 'day', then proposes storing all event timestamps in UTC alongside the original timezone identifier (e.g., 'America/Los_Angeles'). Reporting is handled by converting UTC to the target timezone at query time. Red flags include storing only local time or picking a timezone without consulting business stakeholders.
Read the original → tinybird.co
- #data modeling
- #analytics
- #timezones
- #system design
- #sql
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