Gem migration

How to migrate from other gems

As far as I know, major prior arts are below

ulid gem - rafaelsales/ulid

It is just providing basic String generator only. So you can replace the code as below

-ULID.generate
+ULID.encode

NOTE: In version before 1.3.0, timestamps might not be correct value.

1. Sort order does not respect millisecond ordering
2. Fixed in this PR
3. Released in 1.3.0

NOTE: PR for decoder exists

ulid-ruby gem - abachman/ulid-ruby

It is providing basic generator(except monotonic generator) and parser. Major methods can be replaced as below.

-ULID.generate
+ULID.encode
-ULID.at(time)
+ULID.at(time).to_s
-ULID.time(string)
+ULID.decode_time(string)
-ULID.min_ulid_at(time)
+ULID.min(time).to_s
-ULID.max_ulid_at(time)
+ULID.max(time).to_s

NOTE: In version before 1.0.2, timestamps might not be correct value.

1. Parsed time object has more than milliseconds
2. Fix to handle timestamp precision in parser
3. Fix to handle timestamp precision in generator
4. Released in 1.0.2

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This gem is NOT providing faster string generators than others. See also Benchmark if your system requires severe performance for ID generation.