[nine_k]

For indexes, I completely agree!

If I were to add support for larger amount of keys, I probably would introduce two versions of the data structure, with 16-bit and 32-bit indexing. And, maybe, 8-bit indexing for tiny amounts of keys. But that would definitely complicate the design, and should be done only when there's a real need.

Every such decision is a trade-off; I think yours is fine.

[pshirshov]

I guess that can even be done without breaking the format. I may introduce Obj32 table and maintain backward compatibility. But I'm not sure that's necessary, external chunking works just fine.