# design-patterns

Skill · `skill:design-patterns`

Favz census, built 2026-10-04. Tool names and counts only. No repo names. HTML page: https://favz.co/tools/skill-design-patterns.html

- Repos that have it now: 38
- Repos that ever had it: 43
- Still have it: 88%
- Share of census repos with any tool: 0.04%

## Repos with it, by month

From commit dates in each repo's history. The last few days always look low, because repos found later fill them in.

| Month | Repos at month end |
|---|---|
| 2026-01 | 2 |
| 2026-03 | 11 |
| 2026-04 | 17 |
| 2026-05 | 20 |
| 2026-06 | 22 |
| 2026-07 | 31 |
| 2026-08 | 36 |
| 2026-09 | 38 |

## Goes with

Tools found in the same repos, ranked by lift: 3× means the two show up together three times as often as chance would give. Only pairs sharing 5 or more repos.

| Tool | Kind | Repos with both | Lift |
|---|---|---|---|
| [pr-triage](https://favz.co/tools/skill-pr-triage.md) | Skill | 13 | 1618.5× |
| [solid-principles](https://favz.co/tools/skill-solid-principles.md) | Skill | 8 | 866.1× |
| [issue-triage](https://favz.co/tools/skill-issue-triage.md) | Skill | 17 | 742.6× |
| [code-simplifier](https://favz.co/tools/skill-code-simplifier.md) | Skill | 14 | 415.0× |
| [performance](https://favz.co/tools/skill-performance.md) | Skill | 15 | 276.7× |
| [jpa-patterns](https://favz.co/tools/skill-jpa-patterns.md) | Skill | 6 | 276.7× |
| [architecture-review](https://favz.co/tools/skill-architecture-review.md) | Skill | 5 | 94.3× |
| [pr-review](https://favz.co/tools/skill-pr-review.md) | Skill | 10 | 75.5× |
| [api-design](https://favz.co/tools/skill-api-design.md) | Skill | 7 | 64.8× |
| [ship](https://favz.co/tools/skill-ship.md) | Skill | 10 | 38.5× |
| [code-review](https://favz.co/tools/skill-code-review.md) | Skill | 7 | 13.3× |