Web Development

1. Performance Optimization
   1. Client-Side Optimization
      1. Code Minification and Compression
         1. JavaScript Minification
         2. CSS Minification
         3. HTML Minification
         4. Use of Tools (e.g., UglifyJS, Terser, CSSNano)
         5. Inline Minification
      2. Lazy Loading
         1. Lazy Loading Images
            1. Implement via Intersection Observer API
            2. Placeholder Techniques
            3. Use of tools and libraries (e.g., lozad.js, lazysizes)
         2. Lazy Loading Scripts
            1. Deferred Loading
            2. Asynchronous Script Loading
            3. Dynamic Import with JavaScript Modules
      3. Image Optimization
         1. Format Selection (JPEG, PNG, WebP, SVG)
         2. Image Compression Techniques
            1. Lossy vs. Lossless Compression
            2. Tools and Plugins (e.g., ImageMagick, TinyPNG)
         3. Responsive Images and srcset
         4. Image Sprites and Icons
         5. Implementing CSS Sprites
   2. Server-Side Optimization
      1. Caching Strategies
         1. HTTP Caching (Expires, ETag, Cache-Control)
         2. Client-Side Caching
         3. Server-Side Caching (Varnish, Redis)
         4. Edge Caching with CDNs
         5. Database Query Caching
      2. Content Delivery Networks (CDN)
         1. Benefits of Using a CDN
         2. Configuration and Setup
         3. Edge Servers and Data Centers
         4. Geo-Distribution
         5. Caching Static vs. Dynamic Content
   3. Network Optimization
      1. Reducing HTTP Requests
         1. Combining Files (JavaScript and CSS)
         2. Use of HTTP/2 and Multiplexing
         3. Prefetching, Preloading, and Preconnecting Assets
         4. Optimizing DNS Lookups
      2. Optimizing Resource Load Order
         1. Critical Rendering Path
         2. Asynchronous and Deferred Loading Scripts
         3. Resource Hints (DNS Prefetch, Preconnect, Preload)
         4. Font Loading Optimizations
   4. Performance Testing and Monitoring
      1. Tools for Performance Testing
         1. Google Lighthouse
         2. WebPageTest
         3. GTmetrix
         4. YSlow
      2. Key Performance Metrics
         1. First Contentful Paint (FCP)
         2. Time to Interactive (TTI)
         3. Largest Contentful Paint (LCP)
         4. Cumulative Layout Shift (CLS)
      3. Continuous Monitoring
         1. Real User Monitoring (RUM)
         2. Synthetic Monitoring
         3. Alerts and Notifications for Performance Bottlenecks
   5. Mobile Optimization
      1. Responsive Design Practices
         1. Media Queries
         2. Mobile-First Approach
      2. Adaptive Image Delivery
         1. Device-Based Rendering
         2. Network-Based Adaptation
      3. Reducing Mobile Latency
         1. Minimizing Third-Party Scripts
         2. Optimizing for Low Bandwidth Connections
   6. Database Optimization
      1. Indexing for Faster Queries
      2. Normalization vs. Denormalization
      3. Query Optimization Techniques
         1. Use of EXPLAIN for Query Analysis
         2. Reducing Table Joins
      4. Database Partitioning and Sharding
   7. JavaScript Performance Optimization
      1. Debouncing and Throttling Functions
      2. Avoiding Memory Leaks
      3. Efficient DOM Manipulation
         1. Document Fragments
         2. Batch Updates
      4. Using Web Workers for Heavy Computations