Distribution

Hyperspace is available from nuget as compiled .NET code or GitHub source GNU Open-source license. It is normally referenced as a dependency of Hiperspace.Rocks.

Performance

// * Summary *

BenchmarkDotNet v0.13.10, Windows 11 (10.0.22621.2715/22H2/2022Update/SunValley2) Intel Core i9-9980HK CPU 2.40GHz, 1 CPU, 16 logical and 8 physical cores .NET SDK 8.0.100 [Host] : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2 DEBUG DefaultJob : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2

Source Sparx EA database consisted of 623248 observations (1319 packages, 42433 classes, 208599 attributes, 370897 methods) gathered from reverse engineering of .NET framework and Java JRE.

Stored in local a 968 MB SQL/Server 2019 database and a 197 MB RocksDB directory database, producing a 3Gb JSON file when exported to JSON text

Entity Framework has been optimized to use non-tracking proxies and no lazy loading, but is slower than Hiperspace

• Hiperspace takes 20% of the time to count all observations (traversing object-graph)
• Hiperspace takes 12% of the time to update a range of rows (40)
• Hiperspace takes 65% of the time to export model to JSON (most time dedicated to JSON serialization
• Interestingly, it was faster to export entire model to Hiperspace, and traverse than to recursively count though SQL/Server

Direct RocksDB vs remote

As an embedded store RocksDB can be written by a single process (or multiple when opened read-only). Rockshare C++ gRPC Server enables shared write to a RocksDB hiperspace over a TCP socket connection. The additional network latency takes 2.3 times as long for a full scan of the hiperspace, but ~half the time of a relational database.