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Ministack on

ministack.org github.com/ministackorg/ministack

0e9f5965f2fa as measured in this run

Grade C
high divergence
answers 15.9% of the suite differently from real DynamoDB
100.0% covered
Tier 1 · Core 7.8% diverges
100.0% covered
37 of 475 attempted
Tier 2 · Complete 28.6% diverges
100.0% covered
57 of 199 attempted
Tier 3 · Strict 20.1% diverges
100.0% covered
65 of 324 attempted

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.

How it got here

Ministack's history up to this run, ending on the figures above. Both are plotted because neither reads correctly alone: divergence falls when a target stops attempting an operation it used to get wrong, so a fall in the first plot is only an improvement if the second one holds. The target's own page carries the full history.

Divergence

Ministack divergence up to 2026-07-28 0% 20% 40% divergence - lower is better 23 May 26 May 16 Jun 21 Jun 24 Jun 30 Jun 6 Jul 15 Jul 18 Jul 22 Jul 28 Jul 15.9%
Diverging on 15.9% of the suite as of 28 Jul, at worst 36.4% on 27 Apr. Lower is better, so a falling line is a target getting closer to real DynamoDB.

Coverage

Ministack coverage up to 2026-07-28 96% 98% 100% coverage - higher is better 23 May 26 May 16 Jun 21 Jun 24 Jun 30 Jun 6 Jul 15 Jul 18 Jul 22 Jul 28 Jul 100.0%
Implementing 100.0% of the suite as of 28 Jul, as little as 97.0% on 27 Apr. Higher is better. This is the share of the suite's tests a target implements at all. A fail becoming a skip leaves both numerators over the same fixed denominator, so a fall here is matched point for point by a fall in divergence: withdrawal costs exactly as much coverage as it gains divergence.

Where it fell short on this date

The tests this run recorded as failing, each linked to its source at the commit that measured it. For the current picture, see this target's latest results, or every target in this run.