The thing behind the HTTP protocol


DNS servers are used to resolve domain names. What happens when you type a button in a browser?

Enter the URL and press Enter. 2. The DNS server resolves the domain name first. Server processes request 5. Server returns HTML response 6. Browser processes HTML page 7. Continue to request additional resourcesCopy the code

Differences between HTTP and HTTPS

HTTPS has a layer layer protocol (TLS,SSL) than HTTP. HTTP default port (80); HTTPS Default port (443)

The HTTP status code

Use of cookies and sessions

The use of cookies

The use of the session

Use of cache

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HTTP and reverse proxy

  1. Forward agent

  2. The reverse proxy

Purpose of reverse proxy

The reverse proxy performs load balancing