[daemin]

Nothing preventing you from building a versioned configuration system using a database or similar, especially if you build tools to actually change the configuration rather than hand editing text files.

[acac10]

The key to this is machine AND human readable formats. That is why the text format of protobufs is such a good approach: - structured formats - declared schema - the parser to read the file is also a validity checker (at least for data types)

There are tools that do similar with JSON but none are as simple and unobtrusive as protobuf tool chain.

[rockwotj]

Google has this, IIRC it’s called CDPush

[underdeserver]

CDPush does versioning, canaried rollouts of... hand edited text files.

[ablatt89]

I believe CDPush still has some latency involved which would be slower than reading raw config data from a DB.

[kccqzy]

CDPush does the pushing. It's not a database.