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Search engines use different types of crawling methods to discover, index, and update web pages in their databases. The primary crawling methods include:

  1. Fresh Crawl (Full Crawl)

The search engine crawls the entire website or a significant portion of it.

Used for newly discovered websites or major updates.

Happens periodically but less frequently than incremental crawls.

  1. Incremental Crawl

Focuses on updated or newly added pages rather than the entire website.

Helps search engines keep their index fresh without re-crawling unchanged pages.

Uses signals like sitemaps, last-modified headers, and internal linking changes.

  1. Deep Crawl

Crawls every page and subpage of a website, following all internal links.

Can be resource-intensive and may take time to complete.

Typically performed at scheduled intervals.

  1. Shallow Crawl

Crawls only the most important pages, usually the homepage and top-level pages.

Does not follow deep links into the site structure.

Common for new or low-authority sites.

  1. Focused Crawl

Targets specific content based on predefined criteria (e.g., keywords, topics).

Often used in niche search engines or vertical search engines.

  1. Priority Crawl

Gives higher priority to pages with high traffic, authority, or recent updates.

Influenced by factors like backlinks, sitemap priority, and user behavior.

  1. Recrawl (Revisit)

Re-crawls a previously indexed page to check for updates.

Frequency depends on page importance and update patterns.

  1. Adaptive Crawl

Uses machine learning and AI to optimize the crawl schedule based on historical data.

Dynamically adjusts crawling frequency based on content change rate and importance.

  1. On-Demand Crawl

Happens when webmasters manually request indexing via tools like Google Search Console’s "Request Indexing" feature.

Would you like more details on how to optimize for search engine crawling?

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sachin chhipa

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5mo ago

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