Server Log Analysis is the evaluation of records of all requests made to your website, including those from search engine crawlers. It is the only source that shows what actually happened: which URLs the crawler visited, how often, what response code it received, and how long it waited. Standard auditing tools simulate crawling; logs record it. This lets you uncover things you would otherwise not see – important categories the crawler has not visited for months, crawl budget wasted on parameterised URLs, error responses on specific templates, or a sharp slowdown of the server at certain hours. For large websites, this is the fastest way to understand why new content is not being indexed for a long time. Also check whether the visits genuinely come from the declared crawler, since identification can be spoofed.
See also: Crawl budget, Index bloat, AI Crawler.
