The latest articles on DEV Community by M Muazzam Rehman (@m_muazzamrehman_bc2ec018). https://dev.to/m_muazzamrehman_bc2ec018 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4003162%2Fd1dada1c-0241-4303-b626-418d626578df.png https://dev.to/m_muazzamrehman_bc2ec018 en M Muazzam Rehman Fri, 26 Jun 2026 02:39:59 +0000 https://dev.to/m_muazzamrehman_bc2ec018/tcp-vs-udp-when-to-use-what-and-how-tcp-relates-to-http-1nmd https://dev.to/m_muazzamrehman_bc2ec018/tcp-vs-udp-when-to-use-what-and-how-tcp-relates-to-http-1nmd <p>TCP(Transmission control protocol) and UDP (User datagram protocol) are transport layer protocolsi in the TCP/IP model.<br> <strong>TCP:</strong> TCP is connection oriented protocol that focuses on reliability and accurate data delivery.<br> <strong>UDP:</strong> UDP is a connectionless protocol that focuses on speed and low overhead.</p> <p><strong>Key differences between TCP and UDP</strong></p> <p>TCP:</p> <ul> <li><p>TCP is connection oriented protocol.</p></li> <li><p>TCP is focuses on reliability.</p></li> <li><p>TCP maintains order in data packets.</p></li> </ul> <p>UDP:</p> <ul> <li>UDP is connectionless protocol</li> <li>UDP is not reliable</li> <li>UDP not gurantee of order in data packets</li> </ul> <p><strong>When to use TCP</strong><br> Use TCP when data accuracy and reliability are more important than speed.<br> Typical use cases:<br> Web Browsing (HTTP/HTTPS): Web pages must load correctly. Missing HTML, CSS, or JavaScript files could break the page, so reliable delivery is essential.<br> Email (SMTP, POP3, IMAP): Emails must arrive complete and in the correct order. Missing data could corrupt the message or attachments.</p> networking tcp udp http