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84 lines
2.2 KiB
Markdown
84 lines
2.2 KiB
Markdown
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# Commit Messages
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> Adapted from [commit-messages-guide](https://github.com/RomuloOliveira/commit-messages-guide) by Romulo Oliveira, licensed under [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/).
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## Rules
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### Use imperative mood
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Write what the commit *does*, not what you *did*.
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| Good | Bad |
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|---|---|
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| Add retry logic to payment processor | Added retry logic to payment processor |
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| Fix null check in auth handler | Fixed null check in auth handler |
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| Remove deprecated endpoint | Removing deprecated endpoint |
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### Capitalize the first letter
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| Good | Bad |
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|---|---|
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| Fix null check in auth handler | fix null check in auth handler |
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### Keep the subject line under 50 characters
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The subject line is for scanning. Details go in the body.
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### Wrap the body at 72 characters
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If you need to explain more, add a blank line after the subject and write a body wrapped at 72 characters per line.
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### Explain "why," not "what"
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The diff shows what changed. The commit message should explain why.
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| Good | Bad |
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|---|---|
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| Increase timeout to handle slow upstream responses | Change timeout from 30 to 60 |
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| Switch to arm64 to reduce Lambda cold start cost | Update architecture setting |
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### No generic messages
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These are not acceptable:
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- `Fix stuff`
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- `Update code`
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- `WIP`
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- `Misc changes`
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- `Address review comments`
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Every commit should describe a specific change.
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### No self-referential language
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| Good | Bad |
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|---|---|
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| Fix race condition in queue processor | This commit fixes a race condition |
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| Add input validation for email field | This PR adds validation |
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| Refactor auth middleware for clarity | I refactored the auth middleware |
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## Template
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```
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Subject line (50 chars max, imperative, capitalized)
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Optional body wrapped at 72 characters. Explain the problem
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this commit solves and why this approach was chosen. Mention
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side effects or non-obvious consequences.
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Refs: #123
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```
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## Example
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```
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Add retry logic for transient upstream failures
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The payment processor occasionally returns 503 during
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deployments. Without retries, these surface as user-facing
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errors. This adds exponential backoff with 3 attempts,
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which matches the upstream's documented recovery window.
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Refs: #45
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```
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