Database / InfluxDb interview questions

How can you reduce high cardinality?

Avoid unique per event identifiers in tags. Keep stable tag sets and move volatile identifiers like request ids into fields.

How can you reduce high cardinality? Avoid unique IDs as tags

✓ Correct! Well done.

Use UUID tag for every point

✗ Try again if not.

Randomize tag keys

✗ Try again if not.

Drop timestamps

✗ Try again if not.

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InfluxDb interview questions II

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Database / InfluxDb interview questions

How can you reduce high cardinality?

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