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Epoch seconds
This interview card covers Epoch seconds. Millisecond values expire in the far future or never as intended. Store expiresAt as epoch seconds Number. Compute now+ttl_secs , then Put N , then document units in the runbook.
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What this card says
What it is
Millisecond values expire in the far future or never as intended.
Why it matters
Store expiresAt as epoch seconds Number.
epoch
How / example
Compute now+ttl_secs → Put N → document units in the runbook.
Unit-test seconds not ms.