How to Build an Infinite Scroll List Without Sacrificing Performance - SwiftUI in Production #2

Most production apps need lists that load data on demand — not all at once. This tutorial builds a high‑performance SwiftUI list with true infinite scrolling and pagination.

What's implemented from scratch:

• Paginated REST API fetching (skip & limit)
• Two scroll detection approaches: onAppear vs onScrollGeometryChange (iOS 18)
• Reusable "near bottom" view modifier
• Swift enum state machine for loading states (idle, loading, loaded, error, finished)
• Cell size stability — no jumping images
• AsyncImage best practices: fixed frames, aspect ratios, placeholders
• Duplicate request prevention and cancellation handling
• Profiling with Instruments — zero hitches guaranteed

Perfect for e‑commerce feeds, social timelines, or any data‑driven SwiftUI list. Rock‑solid pattern you can reuse across projects.

Part 2 of SwiftUI in Production series — next up: search and filtering.