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Lessons (11)

• Frontend Performance & Core Web Vitals

  … this automatically). A performance budget Set limits and check them in CI so performance doesn't slowly decay …

• Backend Languages: Node.js, Go, Python & Rust

  … threads, no data races guaranteed by the compiler Performance-critical systems, low latency, low memory Steep learning curve …

• What Is Software Architecture?

  … Architecture is mostly driven by these. Attribute Question Example requirement --- --- --- Performance How fast? p95 page load under 300 …

• Storage Engines & Database Operations

  … You do not need to implement one, but you need to recognize its performance shape. ![Database operations: a …

• Small Functions That Do One Thing

  … Write down in plain English each step it performs. Each step is a candidate for its own function.

• How a Web Request Works

  … middleware → router → controller → service → database. - Performance work targets each hop: DNS, handshakes, server time, queries and payload size.

• How Browsers Render a Page

  … That's what the INP metric measures (see Frontend Performance ). Key takeaways - HTML → DOM, CSS → CSSOM, combined into …

• REST vs GraphQL vs gRPC

  … in Browser support ✅ Native ✅ Native ⚠️ Needs gRPC-Web Performance Good Good Excellent Learning curve Low Medium Medium Which …

• DSA Interview Patterns Cheat Sheet

  … Already sorted / reverse sorted - Duplicates - Very large input (performance) and very large numbers (overflow) - Cycles in graphs / linked …

• Microkernel (Plugin) Architecture

  … to debug Customisation per customer/region without forks Performance overhead of indirection and isolation When to use it …

• Frontend Testing Strategy

  … poor contrast axe-core, jest-axe , Playwright + axe Performance Slow pages, big bundles Lighthouse CI, bundle size checks …