The Journey of a Pixel in a React Application
0 likes56 views
Join us as we explore the journey of a pixel in rendering a React application, from typing a URL to final rendering and user interaction. Each step will be covered, explaining what happens, why it happens, and how to optimize it for better performance. This talk is perfect for web developers looking to enhance their understanding of web applications rendering process and improve application efficiency.
More Related Content
Similar to The Journey of a Pixel in a React Application (20)
More from Shem Magnezi (17)
Recently uploaded (20)
The Journey of a Pixel in a React Application
- 1. The Journey of a Pixel in a React Application Shem Magnezi
- 2. Shem Magnezi CTO & Co-founder @ Wilco Prev: WeWork, Meta @shemag8
- 3. Web development is so easy these days!
- 5. Understanding the 鍖ow will help with: Performance Optimization Efficient Debugging and Troubleshooting Improved SEO and Accessibility Better User Experience Effective Use of Modern Web Technologies Resource Management and Cost Efficiency Collaboration and Communication
- 7. Theres a lot going on here, lets break it down:
- 8. 1. Initial Request and DNS Resolution The browser parses the URL and performs DNS resolution to translate the domain name into an IP address. Generally we don't have a lot of control here. Optimizations: 1. Use a fast DNS provider. 2. Enable DNS prefetching. 3. Implement DNS caching.
- 9. 2. HTTP Request and Server Response The browser sends an HTTP GET request to the server, which processes the request and sends back the HTML document. Optimizations: 1. Optimize server response times. 2. Implement server-side caching.
- 10. 3. Loading the Initial HTML Document The browser starts parsing the HTML document and building the DOM. Optimizations: 1. Optimize HTML. 2. Use server-side rendering (SSR) for faster initial load. 3. Use content delivery networks (CDNs).
- 11. 4. Resource Fetching from the Network The browser fetches external resources like CSS, JavaScript, and images. Optimizations: 1. Use HTTP/2 to reduce latency. 2. Use resource compression (gzip, Brotli). 3. Implement lazy loading for images and other media. 4. Use asynchronous and deferred loading for non-critical resources.
- 12. 5. JavaScript Execution The browser parses and executes JavaScript 鍖les, initializing the application. Optimizations: 1. Minimize and bundle JavaScript 鍖les. 2. Use tree shaking to remove unused code. 3. Implement code splitting to load only necessary JavaScript.
- 13. 6. React Lifecycle React components go through lifecycle methods (e.g., mounting, updating, unmounting). Optimizations: 1. Use React best practices. 2. Optimize component state management.
- 14. 7. React Virtual DOM Creation and Merging React creates a virtual DOM and reconciles it with the real DOM, updating only the necessary parts. Optimizations: 1. Use keys correctly in lists to optimize diffing. 2. Avoid large and complex component trees. 3. Optimize the rendering of frequently updated components.
- 15. 8. Data Fetching React components fetch data asynchronously, to show some data. Optimizations: 1. Use caching for frequently requested data. 2. Implement data fetching strategies like pagination and in鍖nite scroll. 3. Use service workers for offline caching.
- 16. 9. State Update and DOM Reconciliation State changes trigger re-renders, and React reconciles the virtual DOM with the real DOM. Optimizations: 1. Manage state in a smart way. 2. Avoid deep nesting of stateful components.
- 17. 10. Final Rendering and User Interaction The browser completes rendering the webpage, and the user can interact with it. Optimizations: 1. Ensure smooth interactions with optimized event handlers.
- 20. Initial Request and DNS Resolution HTTP Request and Server Response Loading the Initial HTML Document Resource Fetching from the Network JavaScript Execution React Virtual DOM Creation and Merging State Update and DOM Reconciliation Final Rendering and User Interaction React Lifecycle Data Fetching
- 21. Question?