苹果抛弃 Java！转用 Swift 竟让内存占用暴降 90%

Core Insights - Apple's internal development team has transitioned from Java to Swift due to performance and efficiency demands, resulting in a 50% reduction in hardware utilization, 90% decrease in memory usage, and a 40% increase in throughput [1][3] Group 1: Performance and Efficiency - The service operates on a Linux system with a layered encryption mechanism, increasing the computational resources required for each request [2] - Java's garbage collection (GC) issues prompted the search for an alternative language, as GC pauses and performance overhead were significant concerns [2] - Swift's automatic reference counting (ARC) offers a different memory management approach, leading to a 90% reduction in memory usage and halving hardware utilization [3] Group 2: Code Quality and Development - The migration to Swift resulted in an approximately 85% reduction in code lines, attributed to Swift's features that promote clearer and more concise code [3] - Swift emphasizes protocols over inheritance and utilizes async/await for concurrency, enhancing code clarity and safety [3] - The choice of Swift over other languages like Go or Rust was influenced by internal factors, although similar performance improvements could be expected from those languages as well [3]