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Database / ValKey Interview questions

What are Valkey modules and how do you load one?

Modules are shared libraries that extend the server with new commands, data types, or behavior, running in the same process as Valkey itself rather than as a separate service.

# In valkey.conf
loadmodule /path/to/module.so

# Or at runtime
MODULE LOAD /path/to/module.so
MODULE LIST

Because a module executes in-process, it has deep access to the server's internals, but a bug in a poorly vetted module can destabilize or crash the entire server, so module provenance matters more than with an external plugin.

Modules are loaded into Valkey primarily via...
Because modules run in the same process as the server, a buggy module can...

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