Environment:
Fusion
Description:
In Fusion, the concept of a "CrawlDB" refers to a specialised database or data store that is used to manage information related to web crawling and indexing activities. The CrawlDB keeps track of various details about URLs, their crawling status, metadata, and other relevant information. This concept is similar to what is commonly referred to as a "Crawl Database" in the context of web crawling and scraping.
Here's what the CrawlDB is and how it's used in Lucidworks Fusion:
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Crawling Management: The CrawlDB in Lucidworks Fusion is responsible for managing the crawling process. It keeps track of which URLs have been visited, which ones are pending, and which ones have been successfully crawled. This helps prevent duplicate crawling and ensures that all relevant content is properly indexed.
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URL Tracking: The CrawlDB maintains a record of URLs encountered during the crawling process. This includes information such as the URL itself, its status (crawled, pending, etc.), last crawl time, and any associated metadata.
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Deduplication: Duplicate content is a common challenge in web crawling. The CrawlDB helps identify and manage duplicate URLs, ensuring that the same content isn't indexed multiple times.
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Crawl Scheduling: The CrawlDB can be used to manage the scheduling of URLs for crawling. It helps prioritize which URLs to crawl next based on factors like recency, importance, or relevance.
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Crawl Metrics and Monitoring: The CrawlDB stores information about the crawling process, such as the number of URLs crawled, the success rate, and any errors encountered. This allows administrators to monitor the health and effectiveness of the crawling activities.
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Integration with Indexing: The information stored in the CrawlDB is crucial for feeding data into the indexing process. It helps determine what content needs to be indexed, what changes have occurred since the last crawl, and which URLs should be updated or reindexed.
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Crawl Policies and Rules: The CrawlDB can be used to enforce crawl policies and rules. For example, it can define how frequently certain websites or pages should be crawled, or whether certain URLs should be excluded from crawling altogether.
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Data Enrichment: The CrawlDB can also store additional metadata or information about each URL, such as the content type, language, and any custom attributes that might be useful for indexing and searching.
In summary, the CrawlDB in Fusion is a core component for managing and tracking the web crawling process. It helps ensure efficient and effective content discovery, indexing, and maintenance within a search and data application built using Fusion.
Working with the crawl database:
Cause:
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