Unverified50% confidenceFactExact time
Googlebot 会遵循 HTTP 响应头中的 Cache-Control 和 Last-Modified 字段，对未变更页面实施增量抓取策略
1
Sources
50%
Confidence
Long-term
Relevance
7/8/2026
First Seen
Sources
Learning Python Web Scraping from Scratch: How It Works, the Full Workflow, and Legal Boundaries
bilibiliPython全套学习7/6/2026
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