[terrelln]

What use case do you have in mind for packaging dictionaries with archives? There is an ongoing discussion about a jump table format that could contain dictionary locations [1].

[1] https://github.com/facebook/zstd/issues/395

[valarauca1]

For large files >1GiB a library + archive is often smaller then the archive on its own.

[terrelln]

How are you compressing the data?

I would expect a dictionary to be useful if the data is broken into chunks, and each chunk is compressed individually.

If the data is compressed as one frame, I would be very interested in an example where the dictionary helps.