Sourced fromgithub.com/brianvoe/gofakeit/v7's releases.

ID Generator

New:ID() — Fast, Human-Readable Random Identifier

(GoFakeIt v7.9.0)

gofakeit.ID() is a new high-performance identifier generator designed forspeed,readability, andpractically zero collision probability.

Unlike UUID v4 or XID, this generator is intentionallyrandom-first, not structure-based.
Perfect for mock APIs, test data, fixtures, seed data, and temporary identifiers.

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Highlights

• Human readable alphabet, no confusing characters
  →23456789abcdefghjkmnpqrstuvwxyz(no 1, l, i or 0, o to alleviate confusion)
• Fast
• Memory Allocation
• Generates from your rand source
• Shorter than UUID, faster than XID, and requires no coordination

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Example

id:=gofakeit.ID()fmt.Println(id)// → "3t9qf4c92npxhw7bg6y0"

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Performance Benchmarks

Measured on Go 1.25

Generator / Function	Benchmark Name	ops/sec	ns/op	B/op	allocs/op
gofakeit.ID()	BenchmarkID-10	31,383,146	37.8 ns	24	1
gofakeit.UUIDv4()	BenchmarkUUIDv4-10	22,131,577	53.8 ns	48	1
github.com/rs/xid	BenchmarkXID-10	16,190,817	74.2 ns	0	0
github.com/google/uuid (v4)	BenchmarkGoogleUUIDv4-10	3,098,770	386.1 ns	64	2

Takeaway:gofakeit.ID() is~2× faster than XID and~10× faster than UUID v4, while being shorter and human-readable.

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Collision Probability (Randomness Math)

... (truncated)

• 93c1858 password - improve memery allocation and minor increase in op speed
• ce78392 id - lookup updates and some other minor things
• aba6d6f ids - moved uuid into ids file and add our own unique gofakeit id generator
• da6da65 faker - pcg seed create 2 separate seeds using crypto
• 1e2c3fb readme - added/organize ids
• ae981a3 company - remove duplicate keyword/alias wording
• 969e3c7 occupation - updated a few functions to favor job over emojijob
• 1ef7578 occupation - updated a few functions to favor job over emojijob
• a93e4a9 readme - minor update to remove unused functions
• f4eb855 text - added params back to sentence and paragraph to not break builds
• See full diff incompare view

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