我之前搞一个物流轨迹查询接口的时候就栽过。这个接口要查订单库、调用三方物流接口、还要查缓存，单次请求平均耗时400ms。用传统线程池，核心线程设了200，最大线程400，队列也放了，压测QPS顶多320，再往上加并发，响应时间直接崩到3秒开外，线上时不时就报“接口超时”，每次上线都提心吊胆。
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But for most developers working on personal projects or small teams, the 1Password or Keychain approach hits a sweet spot: minimal setup, no infrastructure to manage, and you’re probably already paying for the tools.