| Method | Mean | Error | StdDev | Ratio | RatioSD | Gen 0 | Gen 1 | Gen 2 | Allocated | | Method | Mean | Error | StdDev | Median | Ratio | RatioSD | Gen 0 | Gen 1 | Gen 2 | Allocated | NET Core 2.2.5 (CoreCLR 7.05, CoreFX 8.01), 64bit RyuJITĭefaultJob. Intel Pentium CPU N4200 1.10GHz, 1 CPU, 4 logical and 4 physical cores Here's a sample run on my laptop: // * Summary *
On the other hand all generators run generally faster than Guid.NewGuid. Currently Guid is much more faster than Uuid whenĬonstructing from a string, but more or less on par when constructing from a 16-byte array. Public class DeterministicGenerator : IUuidGenerator Here's sample implementation that could be useful in a testing environment: using Uma.Uuid Yes, just write an implementation of the IUuidGenerator. Hands down the CombGenerator, for the reasons exposed by Jimmy Nilsson in his classical article The Cost of GUIDs as Primary Keys. The value object has a helper method for that, Uuid.ToGuid(). Specially important for COMB Uuids, otherwise their "monotonically increasing" property would be lost. In contrast Uuid.ToByteArray() and Uuid.ToString() always serialize the underlying bytes in Big-Endian, which is Same object is serialized with Guid.ToString(). Moreover it does not exhibit this behaviour when the Little-endian form, while the lower 8 are serialized in big endian. Guid.ToByteArray() it does something unexpected: it serializes the higher 8 bytes, belonging to the first 3 groups in When converting a Guid to a 16-byte array (for instance, to store it in a table in compressed form) with
UUID GENERATOR LINUX PLUS
Uma.Uuid provides several RFC 4122 compliant generators (including version 4) plus Jimmy Nilsson's COMB Guid generatorĪnd a SequentialGenerator for testing scenarios where determinism might be preferred. Guid.NewGuid() always generates version 4 Guids, which are not ideal especially if you use them as table Segregated into a IUuidGenerator interface, meaning you can easily swap implementations and generation strategies
Withs Guids you generate new value objects calling the static Guid.NewGuid() method. There are three key benefits: Generation decoupled from the value object TODO publish to NuGet How does Uma.Uuid compare to the standard Guid class? A port of the uma/uuid library to C#, an RFC 4122 compliant implementation of Universally Unique Identifiers.
0 kommentar(er)
