How the Spider is work?
 

Spider is nothing but search engine bot, each and every search engine has its own bot. Bot crawl the data from the website and store into their database.

Insect additionally called as bot, crawler or robot is an arrangement of PC program that peruses the World Wide Web in efficient and organized form too consequently check the site pages and site for refreshed substance and download a duplicate to its server farm to file.

They can inject venom into their prey. They can produce silk. They have a pair of small appendages on the head, called pedipalps. Their bodies are divided into two sections, the cephalothorax and the abdomen, joined by the thin pedicel.