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Is it easy to find the information you need?
No
Are the instructions clear?
No
How could we improve the Timescale documentation site?
The docs on "dictionary compression" don't make it clear if and how well JSONB would be compressed. Since the example only depicts associating a number with each unique value, it seems to mean that each distinct JSONB value would be associated with a different number, which wouldn't be viable in practice, although in reality according to other sources LZ compression is used, which is fine.
LZ is a "dictionary coder" so the documentation kind of hints at this, but it should just be fully explicit.