20 lines
678 B
Markdown
20 lines
678 B
Markdown
# Data storage, cron, and upgrades
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Use this file when adding persistent storage, background jobs, or upgrade routines.
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## Data storage
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- Prefer Options API for small config/state.
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- Use custom tables only when needed; store schema version and provide upgrade paths.
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## Cron
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- Ensure tasks are idempotent (may run late or multiple times).
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- Provide a manual trigger path for debugging (WP-CLI or admin-only action).
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## Database safety note
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If using `$wpdb->prepare()`, avoid building queries with concatenated user input.
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Recent WordPress versions support identifier placeholders (`%i`) but you must not assume it exists without checking capabilities or target versions.
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