Hi! I'm Lydia Hallie
I'm a 25-year-old software engineer specializing in JavaScript (TypeScript), React (Next.js, Expo), and Web Performance.
2023
Blog Post
Why do reflows negatively affect performance?
January 2024 ∙ FrontendMasters
Course
Advanced JavaScript Quiz
December 2023 ∙ FrontendMasters
Blog Post
Comparing MySQL, PostgreSQL, and MongoDB
November 2023 ∙ Vercel
Blog Post
Enhancing Security for Redirects and Rewrites
October 2023 ∙ Vercel
Blog Post
SQL vs. NoSQL Databases
November 2023 ∙ Vercel
Conference Talk
Performance in React and Next.js
October 2023 ∙ Vercel
Blog Post
Images on the Web
October 2023 ∙ Vercel
Blog Post
Understanding XSS Attacks
October 2023 ∙ Vercel
Blog Post
Content Security Policy
October 2023 ∙ Vercel
Blog Post
Understanding the SameSite attribute
October 2023 ∙ Vercel
Blog Post
Understanding XSRF attacks
October 2023 ∙ Vercel
Blog Post
Understanding Cookies
October 2023 ∙ Vercel
Blog Post
First Input Delay (FID) vs. Interaction to Next Paint (INP)
September 2023 ∙ Vercel
Blog Post
Optimizing Web Fonts
September 2023 ∙ Vercel
Blog Post
How React 18 Improves Application Performance
Vercel | Jul 19, 2023
Blog Post
An Introduction to Streaming on the Web
Vercel | Jun 22, 2023
Conference Talk
Keynote Speaker
Vercel Ship | May 1, 2023
Course
Advanced Web Development Quiz
FrontendMasters | Apr 3, 2023
Blog Post
Streaming for Serverless Node.js and Edge Runtimes with Vercel Functions
Vercel | Mar 28, 2023
Blog Post
Behind the scenes of Vercel's infrastructure
Vercel | Jan 27, 2023
2022
Blog Post
Optimizing Web Fonts in Next.js 13
7 Dec, 2022
Conference Talk
Keynote Speaker
Next.js Conf | Oct 25, 2022
Conference Talk
Architecting a scalable infrastructure
React India | Sep 22, 2022
Podcast
Improve how you architect web apps
LogRocket | Aug 3, 2022
Blog Post
Build your own web framework
Vercel | Jul 28, 2022
Workshop
Modern intro to app development with React and Expo
App.js Conf | Jun 3, 2022
Course
A Tour of JavaScript & React Patterns
FrontendMasters | Jun 1, 2022
Conference Talk
Implementation and use cases of modern rendering patterns
DevX | May 5, 2022
Blog Post
Modern Rendering Patterns
4 May, 2022
Conference Talk
Advanced Rendering Patterns
Reactathon | May 3, 2022
Podcast
Patterns.dev with Lydia Hallie and Addy Osmani
Hanselminutes | Apr 21, 2022
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Blog Post
Upgrading Next.js for instant performance improvements
Vercel | Mar 17, 2022
2021
Course
Certified Associate in Python Programming: PCAP-31-03
KodeKloud | Nov 12, 2021
Book
Patterns.dev
Sep 26, 2021
Podcast
Leveling Up Your JS
Kent C. Dodds | Sep 4, 2021
Conference Talk
Asynchronous Iterators and Generators
Web Directions | Aug 6, 2021
Podcast
Lydia Hallie vertelt ons over React development
CodeKlets | Jun 29, 2021
Conference Talk
Keynote Speaker
Next.js Special Event | Jun 15, 2021
Workshop
Native for React Developers
App.js Conf | May 11, 2021
Course
Certified Entry-Level in Python Programming: PCEP-30-02
KodeKloud | Mar 13, 2021
2020
Podcast
Explaining Code Through Analogies and Visualizations
DevDiscuss | Dec 1, 2020
Conference Talk
Understanding the V8 JavaScript Engine
Reactathon | Dec 1, 2020
Conference Talk
Incrementally adopting Next.js
Next.js Conf | Oct 25, 2020
Course
Understanding Git
KodeKloud | Aug 18, 2020
Course
Modern JavaScript: ES6 and beyond!
VueSchool.io | Mar 30, 2020
Blog Post
⭐️🎀 JavaScript Visualized: Promises & Async/Await
Dev.to | Apr 14, 2020
Podcast
Software Developers Journey Podcast
DevJourney | Feb 17, 2020
Blog Post
💡🎁 JavaScript Visualized: Generators and Iterators
Dev.to | Jan 16, 2020
Blog Post
🎉👨👩👧👧 JavaScript Visualized: Prototypal Inheritance
Dev.to | Jan 3, 2020
2019
Blog Post
🚀⚙️ JavaScript Visualized: the JavaScript Engine
Dev.to | Dec 13, 2019
Documentary
A Day with Remote Software Engineer Lydia Hallie
Honeypot | Nov 29, 2019
Blog Post
⚡️⛓JavaScript Visualized: Scope (Chain)
Dev.to | Nov 20, 2019
Blog Post
🔥🕺🏼 JavaScript Visualized: Hoisting
Dev.to | Nov 20, 2019
Blog Post
✨♻️ JavaScript Visualized: Event Loop
Dev.to | Nov 20, 2019
Conference Talk
Modern Web Performance Trivia
London Web Performance | Nov 13, 2019
Conference Talk
Advanced React
React Live | Sep 27, 2019
Workshop
Advanced GraphQL
JavaScript workshops | Aug 8, 2019
Blog Post
✋🏼🔥 CS Visualized: CORS
Dev.to | Jul 27, 2020
Conference Talk
Database Integration Testing
Prisma Day | Jun 19, 2019
Documentary
Hackathon at the European Central Bank
European Central Bank | May 6, 2019
2018
Course
Mastering Data Structures and Algorithms in JavaScript
Educative.io | Sep 6, 2018
Book
Data Structures and Algorithms
Jun 18, 2018
Book
React Redux Notes
May 2, 2018
Book
JavaScript Notes
Apr 2, 2018
Book
Understanding Git
Jan 12, 2018
