How the web works
DNS
HTTP How do browsers work? What is DNS and how does it work?
What happens when you type an URL in the browser address bar #
- Request url in browser
- Check local cache for IP address
- Check your recursive DNS server for IP address
- Query root server to find authoritative DNS server
- Authoritative DNS server advises the IP address for the website
- Request passes through a web application firewall
- Request passes through a load balancer
- Connect to webserver on port 80 or 443
- Web server receives the GET request
- Web application talks to database
- Browser renders the HTML into a viewable website