UUID 생성기
RFC 4122 호환 랜덤 UUID v4 생성.
Nil / Max UUID
Nil UUID (all zeros)
00000000-0000-0000-0000-000000000000Max UUID (all f's)
ffffffff-ffff-ffff-ffff-ffffffffffffUUID v4 (Random)
2c7cdbfa-86a1-4fa6-b143-f0bde6738fa10bf5abf6-9286-4b72-b030-8bee6af11315a7b2ad15-6d33-4b0f-a458-85826214df5d41746c41-1e63-4c5c-9881-53b63e5628856a44339c-b19d-4c45-b766-b4001073c950dc72fc6c-402c-40a6-8b26-7c1250646643UUID v1 (Timestamp)
f160de90-5578-11f1-9fd9-691ce93d9976f160de90-5578-11f1-a39b-6fbb81d41bfcf160de90-5578-11f1-968d-57a0084011a2f160de90-5578-11f1-b6a5-3d1e6294b633UUID v7 (Unix Timestamp)
019e4d2e-3af9-7871-abc5-e229349f1fc9019e4d2e-3af9-7c7b-a72d-4d77e3819de0019e4d2e-3af9-7063-8d1b-24eccfaefb2f019e4d2e-3af9-78d0-bf2b-8d772d430f1a