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7 emulators 706 tests

Results as of this run. The arrow shows each target's movement since the previous run it was tested in. The suite grew this run, so an upward arrow can be the new tests biting rather than a target getting worse.

When this run was published the board led with a single correctness percentage. The figures here are that run's own results restated as divergence and coverage, so they read differently from what this page showed at the time. The changelog has the change.

Suite grew from 699 to 706 tests this run.

That's 7 new tests measured against every target. Movement below compares to the previous run, so a rise here is as likely to be the stricter suite as a real regression.

What changed in the suite this run

Suite on

Grew to 706 tests, up 7, tightening secondary-index behaviour in Tier 1. Query and Scan on a GSI or LSI now assert sparse membership: an item that omits the index key stays off the index but remains on the base table. And PutItem now rejects an item whose GSI or LSI key value is the wrong type, non-scalar, or an empty string while the base-table keys are valid, holding an index key to its declared scalar type the same way a table key is held.

  1. DynamoDB
    live (AWS)

    Runs via: AWS service

    Grade baseline

    no divergence in all 33 regions · covers 100.0% of the suite

    ground truth
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    100.0% covered
    Tier 3 · Strict 0.0% diverges
    100.0% covered
  2. Dynoxide
    0.10.0 14 unsupported ; covers 98.0% of the suite

    Runs via: npx, Docker, Homebrew, binary, npm, cargo, embedded, GitHub Action, source

    Disclosure: maintained by this board's author

    Grade A

    low divergence (1.1%) · covers 98.0% of the suite

    diverged 0.7 percentage points more
    Tier breakdown
    Tier 1 · Core 1.4% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    89.4% covered 14 unsupported
    Tier 3 · Strict 1.4% diverges
    100.0% covered
  3. ExtendDB
    v0.1.1 42 unsupported ; covers 94.1% of the suite

    Runs via: source

    Grade A

    low divergence (2.4%) · covers 94.1% of the suite

    diverged 0.4 percentage points more
    Tier breakdown
    Tier 1 · Core 3.6% diverges
    100.0% covered
    Tier 2 · Complete 1.5% diverges
    68.2% covered 42 unsupported
    Tier 3 · Strict 0.9% diverges
    100.0% covered
  4. Ministack
    6ab22e716ef2

    Runs via: pip, Docker, source

    Grade A

    low divergence (3.4%) · covers 100.0% of the suite

    diverged 0.8 percentage points more
    Tier breakdown
    Tier 1 · Core 3.3% diverges
    100.0% covered
    Tier 2 · Complete 6.1% diverges
    100.0% covered
    Tier 3 · Strict 1.9% diverges
    100.0% covered
  5. Floci
    18c54f4a774a 9 unsupported ; covers 98.7% of the suite

    Runs via: Docker, Homebrew, install script, Scoop, binary, JAR

    Grade B

    moderate divergence (7.9%) · covers 98.7% of the suite

    diverged 0.8 percentage points more
    Tier breakdown
    Tier 1 · Core 7.2% diverges
    100.0% covered
    Tier 2 · Complete 11.4% diverges
    93.2% covered 9 unsupported
    Tier 3 · Strict 7.0% diverges
    100.0% covered
  6. LocalStack
    2026.5.4 8 unsupported ; covers 98.9% of the suite

    Runs via: Docker, pip, Homebrew, binary

    Grade B

    moderate divergence (11.5%) · covers 98.9% of the suite

    diverged 0.1 percentage points less
    Tier breakdown
    Tier 1 · Core 1.4% diverges
    100.0% covered
    Tier 2 · Complete 6.8% diverges
    93.9% covered 8 unsupported
    Tier 3 · Strict 31.3% diverges
    100.0% covered
  7. DynamoDB Local
    d89f8fcc6b1a 13 unsupported ; covers 98.2% of the suite

    Runs via: Docker, JAR, Maven

    Grade B

    moderate divergence (12.6%) · covers 98.2% of the suite

    diverged 0.1 percentage points less
    Tier breakdown
    Tier 1 · Core 2.8% diverges
    100.0% covered
    Tier 2 · Complete 9.8% diverges
    90.2% covered 13 unsupported
    Tier 3 · Strict 30.8% diverges
    100.0% covered
  8. Dynalite
    4.0.0 67 unsupported ; covers 90.5% of the suite

    Runs via: npm, npx, embedded

    Grade C

    high divergence (16.1%) · covers 90.5% of the suite

    unchanged
    Tier breakdown
    Tier 1 · Core 4.7% diverges
    100.0% covered
    Tier 2 · Complete 40.9% diverges
    49.2% covered 67 unsupported
    Tier 3 · Strict 20.1% diverges
    100.0% covered