Ssad-indigo
Already crawled URLs
How does the crawler know if a URL has been already crawled? And how can I get a list of those already visited/crawled URLs?
I noticed some json files in the request queue have
My intention with these questions is also to try to understand why my request queue is growing (a lot). Perhaps I could "optimize" the crawler so if there's already too many requests in the queue I'd stop "enqueueLinks" but would keep note of those URLs so they could be scraped again (ie I'd "enqueueLinks") at a later time. What do you think?
Thank you!
EDIT:
I came to realize that the request queue keeps growing because already scrapped sources remain there (to make sure we don't scrap/crawl the same page twice). My question is: is there a way through the API to remove already crawled urls, in case the user wants to free some space (my case)?
I noticed some json files in the request queue have
orderNo=nullMy intention with these questions is also to try to understand why my request queue is growing (a lot). Perhaps I could "optimize" the crawler so if there's already too many requests in the queue I'd stop "enqueueLinks" but would keep note of those URLs so they could be scraped again (ie I'd "enqueueLinks") at a later time. What do you think?
Thank you!
EDIT:
I came to realize that the request queue keeps growing because already scrapped sources remain there (to make sure we don't scrap/crawl the same page twice). My question is: is there a way through the API to remove already crawled urls, in case the user wants to free some space (my case)?
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