3 Duplicate Instagram Posts in 8 Hours: Anatomy of a False-Negative Success Check

Описание и применение

Автоматизированный скрипт публикации в Instagram повторно публиковал один и тот же карусельный пост из‑за ложного отрицания проверки успешности. Внедрение нормализации текста, приоритезации API‑проверки и отказоустойчивого дизайна устранило дублирование.

Задача

Automated Instagram posting script repeatedly posted the same carousel three times due to a false-negative verification that misidentified a successful post as a failure.

Результат

The fixes eliminated duplicate posts by normalizing text, prioritizing API verification, and adopting a fail-closed strategy, ensuring accurate success detection and preventing unnecessary retries.

Рабочий процесс

• Generate caption and post carousel via IG API
• Run _verify_landed() to compare first 12 chars of caption with DOM inner_text
• If ok:false, scheduler retries next slot
• If verification fails repeatedly, duplicate posts occur

Доказательства

_verify_landed() fetched the profile page DOM and compared the first 12 characters of the body text with the first 12 characters of the caption.

Источник

The fix, in three parts: 1. Caption normalization, 2. API-first lookup, 3. Fail-closed design.

Источник