Unique ID Generation

UUIDv4, UUIDv7, ULID, and Snowflake IDs, index locality, clock rollback, and hiding sequential IDs.

0 / 6 solved
0/6 solved
Question Tags Difficulty Success
1. Fast Table Goes Slow
index-localityuuid +1
Easy —
2. Four Thousand And Ninety Six
snowflakeid-generation +1
Medium —
3. Counting the Competition
opaque-idauto-increment +1
Medium —
4. Unpack The Machine
snowflakebit-manipulation +1
Medium —
5. Same Millisecond, Different Story
uuidv7monotonic-id +1
Hard —
6. The Clock Went Backwards
snowflakeclock-skew +2
Hard —

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6 of 6 questions here are still unsolved.