In the last few years, internet has become too big and too complex to traverse easily. With the need to be present on the search engine bots listing, each page is in a race to get noticed by optimizing its content and curating data to align with the crawling bots’ algorithms. Similarly, there are multiple parties who wish to access this data and extract it for their benefit. Hence, to bridge this need gap, web crawlers
came into existence.
It is a widely known fact that creating and maintaining a single web crawler across all pages present on the internet is no easy task. It is essential for the crawlers to evolve at the same pace as internet is involving in the current scenario. In order to support this evolution, each crawler should get their basic layout right, so new features and code snippets can be extended upon the same crawler. Following is the basic functionality layout of how web scraping works.