I Built a Pixiv Alternative in Go (and Taught It SEO)

Описание и применение

Создана платформа для иллюстраций, использующая Go и React SPA, с улучшенной SEO через бот‑пререндеринг, IndexNow, клиентскую обработку изображений и усиленную безопасность аутентификации.

Задача

Building an illustration community platform that is SEO‑friendly while maintaining a SPA architecture and secure upload/auth flows.

Результат

The platform achieved SEO visibility for a SPA, reduced bandwidth costs via client‑side downsampling, and hardened security for uploads and authentication.

Рабочий процесс

• 1. Detect Googlebot UA and serve pre‑rendered HTML with title, meta, OG, JSON‑LD.
• 2. On artwork publish, send IndexNow ping to Bing/Yandex.
• 3. Generate sitemap.xml and robots.txt.
• 4. Validate uploads via magic‑byte, reject absurd dimensions, downsample on client to ~800KB WebP before upload.
• 5. Store uploads in Cloudinary, avoiding large server‑side files.
• 6. Use bcrypt with dummy‑hash for timing attack protection.
• 7. Issue JWT (HS256) with Redis‑backed revocation and password‑change epoch.
• 8. Apply rate limiting, account lockout, generic error messages.
• 9. Use Sqids for artwork URLs.
• 10. Deploy and monitor SEO performance.

Доказательства

I implemented bot pre-rendering: when the user-agent smells like Googlebot, the server returns fully rendered HTML with real <title>, meta/OG tags, and JSON-LD structured data per artwork — instead of an empty <div id="root">.

Источник

Every artwork publish fires an IndexNow ping, so Bing/Yandex learn about new content in minutes instead of weeks.

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Magic-byte validation — never trust the extension or the Content-Type header.

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Client-side downsampling — a Canvas GPU pipeline shrinks 10–20 MB master illustrations to ~800 KB WebP before network transit.

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bcrypt with constant-time dummy-hash execution so username enumeration via timing attacks doesn't work.

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Artwork URLs use Sqids hash IDs (/artwork/v06sDC) instead of sequential integers.

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