Localhost ek term hai jo computer networking mein istemal hoti hai aur typically aapke khud ke device ya computer ko refer karne ke liye use hoti hai jab woh specific device par hi network resources ko access karta hai.
Jab aap "localhost" use karte hain, toh aap apne hi device ko refer kar rahe hote hain, yaani ki us device ko jis par aap currently kaam kar rahe hote hain. Generally, localhost ko IP address 127.0.0.1 se represent kiya jata hai. Ye IP address aapke device ke loopback interface ko point karta hai. Loopback interface ek internal interface hoti hai jo aapke device ke internal communication ke liye use hoti hai. Jab aap kisi application ya service ko localhost ke through access karte hain (for example, web server, database server, etc.), woh resources aapke local device par hi run kar rahe hote hain.
Iska istemal development aur testing ke dauran hota hai, jab aap apne hi device par locally hosted applications ya services ko access karna chahte hain. For example, agar aap local web development kar rahe hain, toh aap apne browser mein "localhost" ya "127.0.0.1" type karke locally hosted web server ko access kar sakte hain.
