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CSharpDB v3.2.0

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@github-actions github-actions released this 19 Apr 05:04
· 370 commits to main since this release
v3.2.0
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v3.2.0

This release carries forward the version3.2.0 branch from the April 15, 2026
v3.1.2 base through the current head, centering on the first embedded EF Core
provider foundation, scalar aggregate lookup planning improvements, refreshed
benchmark guardrails, and new guidance for programmatic insert performance.

Entity Framework Core and ADO.NET Foundation

  • Added CSharpDB.EntityFrameworkCore, an embedded-only EF Core 10 provider
    built on top of CSharpDB.Data, including UseCSharpDb(...), provider
    options, design-time services, migrations/history/locking infrastructure,
    relational connection services, query SQL generation, type mappings, and
    update batching.
  • Added provider docs and a runnable samples/efcore-provider sample covering
    EnsureCreatedAsync(), design-time context creation, migrations, navigation
    loading, and the supported embedded runtime shapes.
  • Added package-local NuGet README and release/CI pack wiring so
    CSharpDB.EntityFrameworkCore ships through the same package flow as the
    existing provider/runtime packages.
  • Expanded the underlying ADO.NET command, parameter binding, and
    prepared-statement plumbing needed by the provider foundation and added
    focused data/provider tests.

Query Planning and Runtime Work

  • Optimized scalar aggregate lookup planning so simple indexed and
    primary-key-backed COUNT(...) / SUM(...) lookup shapes can reuse
    lightweight lookup plans instead of first materializing fuller operator
    pipelines, reducing allocations and improving targeted microbenchmark rows.
  • Extended parser, tokenizer, query-result, and execution-planning support so
    the embedded engine can handle the SQL and query shapes emitted by the new EF
    Core surface.
  • Simplified WAL flush policy abstractions by removing
    FlushBufferedWritesAsync from IWalFlushPolicy and aligning WAL test
    assertions around the current commit/flush contract.

Benchmarks, Guardrails, and Guidance

  • Refreshed the focused ScalarAggregateLookupBenchmarks baseline and perf
    thresholds using the April 18, 2026 validation capture checked into
    tests/CSharpDB.Benchmarks/baselines/focused-validation/20260418-185724.
  • Stabilized the benchmark guardrail workflow and scenario entry points,
    including durable SQL batching coverage and the release compare script used
    for targeted performance verification.
  • Added a benchmark-driven CSharpDB-versus-SQLite comparison guide to the
    website and updated the sitemap to publish it.

Docs, Samples, and Planning

  • Added the new docs/programmatic-insert-performance plan set, splitting the
    earlier insert investigation into separate single-writer,
    durability/residency, and concurrent disjoint-key writer plans aligned to the
    current public API and benchmark harnesses.
  • Refreshed benchmark documentation, sample index content, and README badges to
    reflect the current provider, benchmarking, and documentation surface.

Validation

  • Added EF Core foundation coverage across tests/CSharpDB.Data.Tests,
    tests/CSharpDB.EntityFrameworkCore.Tests, tests/CSharpDB.Tests, and the
    focused benchmark baseline/guardrail docs used by this branch.
  • Checked in the focused scalar aggregate benchmark baseline capture used by the
    current perf threshold update.
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