


These repetitive requests can increase the pageload issues by putting more load on the server.

That said, there may be instances in which crawlers/spiders converge on a page that is erroring out ( 502s in the example below). Since search-indexing is desirable for most sites, tread carefully in order to avoid wreaking havoc on a site's SEO. Some legitimate bots/crawlers/proxies (such as BingBot or AdsBotGoogle) will identify themselves.
