Database / BetterDB Interview questions

What is the difference between Key Analytics and Hot Key Tracking?

Hot Key Tracking is a base feature that ranks keys by access frequency and shows how that ranking moves over time – essentially, "what's hot right now versus a while ago."

Key Analytics, a Pro feature free during early access, goes further: it adds type, TTL, and size distributions gathered through live sampling, answering a different question – "what shape is my keyspace," not just which individual keys are busiest.

You'd reach for Hot Key Tracking to spot a runaway hot key causing load right now, and for Key Analytics to understand overall memory and TTL patterns across the whole keyspace over time.

They're complementary rather than overlapping: Hot Key Tracking is cheap to run continuously since it just counts access events, while Key Analytics' live sampling of type, TTL, and size is a heavier, periodic snapshot better suited to answering "where is my memory actually going" than to real-time alerting.

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Which feature adds type, TTL, and size distributions via live sampling? Hot Key Tracking

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Capacity forecasting

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ACL audit trail

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Key Analytics

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What does Hot Key Tracking rank keys by? TTL only

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Access frequency, with rank movement over time

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Byte size only

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Alphabetical order

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