seniorSwift
How do you design a high-performance image loading pipeline in iOS?
Updated May 17, 2026
Short answer
A high-performance image pipeline uses caching, decoding optimization, and async loading.
Deep explanation
Efficient image pipelines include memory cache (NSCache), disk cache, background decoding, and request deduplication. Images should be decoded off-main-thread to avoid UI stalls. Downsampling reduces memory usage for large images.
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