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Tools / Apache HertzBeat Interview Questions

When should you use a time-series database with HertzBeat?

A time-series database (TSDB) is technically optional in HertzBeat, but you should configure one for any deployment beyond a quick evaluation. Without one, HertzBeat only retains the last hour of historical data, which makes trend charts and long-term dashboards useless.

HertzBeat supports several TSDB backends — VictoriaMetrics, Apache IoTDB, and TDengine among them — and the project's own documentation recommends VictoriaMetrics as the default choice for most production setups because of its strong write/read performance and PromQL compatibility.

Without a configured time-series database, HertzBeat retains history for:
Which TSDB does HertzBeat's documentation recommend as the default?

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