Experimental implementation of the UUID version 7 in Scala. This is personal project.
libraryDependencies += "io.github.kzmake" %% "uuid7s" % "..."TTTTTTTT-TMMM-7SSS-rRRR-RRRRRRRRRRRR
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| unixts |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|unixts | msec | ver | seq |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|var| rand |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| rand |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
val s = UUID.generate().toString
println(s) // 061c8046-f151-7000-ba5c-3c953d538347$ amm
@ import $ivy.`io.github.kzmake::uuid7s:latest.integration`
@ import io.github.kzmake.uuid7s.UUID
@ (1 to 10).map(_ => UUID.generate().toString)
res: IndexedSeq[String] = Vector(
"061c8046-f151-7000-ba5c-3c953d538347",
"061c8046-f151-7001-867a-56c7f5084c1d",
"061c8046-f151-7002-a68c-61367b526e5e",
"061c8046-f152-7000-8f5f-5e6b704fb1d1",
"061c8046-f152-7001-8c82-50ea10dc7229",
"061c8046-f152-7002-b74a-366670d09d08",
"061c8046-f152-7003-8ce5-f74d82bac15e",
"061c8046-f152-7004-b822-baed58895a9e",
"061c8046-f152-7005-a266-46e729bc6a4e",
"061c8046-f152-7006-ada8-1e5b8b30c32e"
)$ amm -s -c "import \$ivy.`io.github.kzmake::uuid7s:latest.integration`; import io.github.kzmake.uuid7s.UUID; println(UUID.generate())"
061c8046-f151-7000-ba5c-3c953d538347$ docker run -it --rm ghcr.io/kzmake/uuid7s -n 3
061c87c0-1006-7000-a49b-f706d0b7e98e
061c87c0-100f-7000-8233-15823e030f80
061c87c0-100f-7001-92c5-c3a5e22f7220
$ docker run -it --rm ghcr.io/kzmake/uuid7s 061c87c0-1006-7000-a49b-f706d0b7e98e
2021-12-26T14:28:17.006Z$ sbt benchmark
...
[info] Benchmark Mode Cnt Score Error Units
[info] UXIDBenchmark.airframe_ULID sample 387547 270.747 ± 18.105 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.00 sample 168.000 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.50 sample 220.000 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.90 sample 289.000 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.95 sample 316.000 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.99 sample 477.000 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.999 sample 8070.464 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p0.9999 sample 33755.699 ns/op
[info] UXIDBenchmark.airframe_ULID:airframe_ULID·p1.00 sample 1333248.000 ns/op
[info] UXIDBenchmark.java_UUID sample 264030 350.506 ± 23.652 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.00 sample 142.000 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.50 sample 289.000 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.90 sample 347.000 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.95 sample 364.000 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.99 sample 426.000 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.999 sample 11373.024 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p0.9999 sample 235309.645 ns/op
[info] UXIDBenchmark.java_UUID:java_UUID·p1.00 sample 702464.000 ns/op
[info] UXIDBenchmark.kzmake_UUID sample 242593 409.998 ± 19.901 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.00 sample 230.000 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.50 sample 306.000 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.90 sample 431.000 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.95 sample 451.000 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.99 sample 503.000 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.999 sample 16364.992 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p0.9999 sample 172524.749 ns/op
[info] UXIDBenchmark.kzmake_UUID:kzmake_UUID·p1.00 sample 271360.000 ns/op