SwiftUI Image Caching Explained - Faster Lists & Better Performance

Every network image in a list causes a network request, lag, and janky scrolling. Caching solves this.

What this video covers:

• Why image caching matters for list performance
• NSCache — fast in‑memory caching
• Disk caching — persistence across launches
• URLCache — built‑in HTTP caching
• Combining memory + disk for a two‑level cache
• Caching strategies: eviction, limits, and expiration
• Measuring performance improvements

Real example: A product list with images that loads instantly on second scroll — zero flicker, zero re‑downloads.