InstantWebViewApp

High-performance iOS WebView application with smart caching strategies.

Features

• 🚀 Instant Loading: WebView preloads in background
• 💾 Smart Caching: Multiple caching strategies (stale-while-revalidate, session cache, etc.)
• ⚡ Native Performance: 60 FPS smooth scrolling
• 🔄 Background Revalidation: Updates cache without blocking UI
• 🎯 Production Ready: Error handling, loading states, proper memory management

Caching Strategies

1. Always Fresh - Always load from server (no cache)
2. Session Cache - Cache for N minutes
3. Stale-While-Revalidate - Show cached + update in background (recommended)
4. Revalidate On Close - Update cache when closing WebView

Installation

Requirements

• macOS with Xcode 14.0+
• iOS 15.0+ (deployment target)

2. Open the project:

   open InstantWebViewApp.xcodeproj

3. Configure your web app URL:

   // In InstantWebViewAppApp.swift
   let WEB_APP_URL = "https://your-app.com"

4. Select a simulator and run (Cmd + R)

Configuration

Change Caching Strategy

// In InstantWebViewAppApp.swift
let CACHE_STRATEGY: CacheStrategy = .staleWhileRevalidate  // Change this
let CACHE_DURATION_MINUTES = 15  // Cache lifetime

Available Strategies

• .alwaysFresh - Development mode
• .sessionCache - Balanced approach
• .staleWhileRevalidate - Best UX (recommended)
• .revalidateOnClose - Resource efficient

Architecture

• SwiftUI - Modern declarative UI
• WKWebView - High-performance web rendering
• Combine - Reactive state management
• Background WebView - Silent revalidation

Performance

• First open: 0-2 seconds (depending on page)
• Subsequent opens: Instant (< 100ms)
• Cache persistence: Across app sessions
• Memory efficient: Process pool reuse