A ULID (Universally Unique Lexicographically Sortable Identifier) is a unique ID that combines a millisecond timestamp with randomness, making it both unique and sortable by creation time.

ULID is sortable by time and uses a more compact Crockford Base32 encoding, while UUID v4 is fully random and uses hexadecimal. ULID is ideal when time - ordering matters.

Use ULID when time - ordering matters, such as database primary keys or event logs. Use UUID when wider compatibility with existing systems is more important.

नहीं, ULID generation is performed entirely in your browser. The identifiers are created locally with JavaScript and never transmitted anywhere.