Database / BetterDB Interview questions

When should you use BetterDB Monitor's offline license instead of an online key?

Use the offline/air-gapped license specifically when the host has no internet access at all.

The online model (BETTERDB_LICENSE_KEY) validates against betterdb.com and caches a locally-verified signed token so your tier survives short outages and restarts – but it still assumes at least occasional connectivity.

The offline model instead uses a signed RS256 JWT you download ahead of time from betterdb.com/account/licenses and transfer via USB, config management, or a secret mount; once configured, and as long as BETTERDB_LICENSE_KEY itself is unset, the monitor makes zero outbound requests for license checks, telemetry, or update pings.

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What triggers BetterDB Monitor to make zero outbound license requests? Disabling the Prometheus endpoint

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An offline token configured with no BETTERDB_LICENSE_KEY set

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Running the -no-ai image

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Setting NODE_ENV=production

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What survives short network outages under the online licensing model? Nothing, it fails immediately

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Only the Postgres connection

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The MCP server session

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A locally cached, verified signed token

✓ Correct! Well done.

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What are the connection settings in BetterDB for Valkey? List the ways you can access data in BetterDB Monitor? How do you install BetterDB Monitor without Docker? What are the key browser features in BetterDB for Valkey? What is the purpose of BetterDB Monitor's Prometheus endpoint? What is the ENCRYPTION_KEY variable used for in BetterDB Monitor? What are the two Docker image variants for BetterDB Monitor? How do you run BetterDB Monitor with a single Docker command? Define COMMANDLOG support in BetterDB Monitor? What is the default port for the BetterDB Monitor dashboard? How can you optimize Prometheus scraping for a clustered BetterDB Monitor deployment? Describe the tech stack behind BetterDB Monitor? What is host.docker.internal used for with BetterDB Monitor? Which data types support full CRUD in BetterDB for Valkey? What is BetterDB Monitor? What is BetterDB for Valkey? What is the purpose of the BetterDB MCP server? What are the storage backends supported by BetterDB Monitor? What is the minimum Valkey version BetterDB Monitor supports? Why does BetterDB Monitor need PostgreSQL for production deployments?

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