Database / BetterDB Interview questions

What is host.docker.internal used for with BetterDB Monitor?

When the Valkey or Redis instance you want to monitor runs on your host machine, localhost inside the BetterDB container refers to the container itself, not the host.

Setting DB_HOST=host.docker.internal instead lets the container reach services on the host.

This works out of the box on Docker Desktop (macOS/Windows); on Linux you must add --add-host=host.docker.internal:host-gateway to the docker run command.

The dashboard's one-click "connect to local instance" button auto-detects this and pre-fills the right host.

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Why can't a BetterDB Monitor container reach 'localhost' on your host? localhost is reserved for HTTPS only

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Inside the container, localhost refers to the container itself

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Valkey disables loopback connections

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Docker blocks all loopback traffic

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What extra flag does Linux need for host.docker.internal to resolve? --add-host=host.docker.internal:host-gateway

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--dns=8.8.8.8

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--privileged

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--network=none

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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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