Gzipping UUIDs
UUIDs are generally uncompressable. This is because their values can be anything and multiple UUIDs generaly don't repeat in a payload. So you may be surprised to learn that a JSON list of UUIDs compresses to 56% of their original size. Here's an example:
[
"572585559c5c4278b6947144d010dad3",
"b97ec0750f67468d964519e18000ccf6",
"c1c69970b9bc4c0a9266a3350a9b2ab1",
"2eb10805db484db7a196f89882d32142",
"4b3569aaac154195aaa5ea114eff6566",
"e253f04c1f414b7291e682ea465e8e19 …