SShortSingh.
TopTechnologyAI & MLStartupsProgrammingScienceBusinessFinanceCrypto & Web3World
Back to feed
Programming

DNS to HTTP/3 and CORS: A Structured Beginner's Guide to Web Fundamentals

0
·1 views

A technical explainer published on DEV Community walks beginners through the core protocols and systems that power the modern web. The piece covers how DNS translates human-readable domain names into IP addresses, detailing its four-layer hierarchy, record types, and the role of recursive resolvers. It also explains how DNS requests can be encrypted using DNS over TLS or DNS over HTTPS to prevent ISPs from monitoring browsing activity. The article further outlines the evolution of HTTP from version 1.1 through HTTP/2 and HTTP/3, describing improvements in speed, multiplexing, and transport protocols. CORS, which governs how browsers handle cross-origin resource requests, is also addressed as part of the broader overview.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Log in to join the discussion and vote.

Log in

Related stories

0
ProgrammingDEV Community ·

Why Your ₹18 LPA Offer Translates to ₹1.1L Monthly Take-Home

Many Indian tech professionals are surprised to find their monthly salary significantly lower than their CTC divided by 12, a gap explained by how Cost to Company is structured. CTC includes employer PF contributions, gratuity accruals, and variable pay that never appear as monthly cash in hand. Further deductions such as the employee's own EPF share, professional tax, and income tax TDS reduce the gross amount further before it reaches a bank account. For FY 2025-26, the new tax regime is the default and often favours salaried employees who do not claim large exemptions, though individuals with high rent, home loans, or maxed 80C investments may still benefit from the old regime. A developer who experienced this pay gap firsthand built a browser-based take-home salary calculator for India that compares both tax regimes side by side without requiring a sign-up.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

SQL Interviews Test Business Thinking, Not Just Syntax, Experts Say

A guide published by Four-Leaf AI argues that SQL interview rounds primarily evaluate a candidate's ability to translate vague business questions into precise queries, rather than test raw syntax knowledge. Interviewers deliberately leave prompts underspecified to see whether candidates clarify requirements before writing any code, a habit they consider more valuable than the query itself. The article identifies three question types that dominate most SQL rounds: join-and-aggregation, window functions, and open-ended business analysis against an unfamiliar schema. Strong candidates are distinguished by how they handle edge cases such as nulls, duplicate rows, and ambiguous definitions like 'active user.' The emphasis on SQL preparation is underscored by the Stack Overflow 2025 Developer Survey, which found 58.6% of developers used SQL in the past year, ranking it the third most-used language globally.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Palamut Oyun builds lightweight, secure HTML5 game platform for browsers

A developer shared on DEV Community the technical architecture behind Palamut Oyun, a browser-based HTML5 gaming platform. The project prioritizes performance by avoiding heavy frameworks and instead using optimized assets with a component-based architecture. Security is enforced through mandatory HTTPS and isolated iframe environments that restrict execution of potentially harmful scripts. The platform supports both mobile and desktop browsers using HTML5 canvas alongside CSS Grid and Flexbox for responsive scaling. The project is currently live and the developer is seeking community feedback on performance and technical design.

0 comments Read more at DEV Community