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A little signal. Less noise.

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A considered collection of AI tools, trials, and opportunities.

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A little signal. Less noise.

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22 · NestJs InjectionScopes 注入作用域:默认单例不是偷懒,是最优——以及何时才该打破

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一、一句话回答二、为什么"默认全是单例"在 Node 里是安全的前端/Java 背景的人会惊讶:Nest 里几乎所有东西都跨请求共享——连接池、带状态的单例服务。这在 Node 里默认安全,因为:

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Provider: 掘金
Source: juejin-rss
Score: 57.37
Confidence: 54%

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What RADAR observed and classified to build this opportunity. It is what the source published, not a verification that the offer is still active.

JuejinObserved: Oct 8, 2026Source reliability: 60%
22 · NestJs InjectionScopes 注入作用域:默认单例不是偷懒,是最优——以及何时才该打破. 一、一句话回答二、为什么"默认全是单例"在 Node 里是安全的前端/Java 背景的人会惊讶:Nest 里几乎所有东西都跨请求共享——连接池、带状态的单例服务。这在 Node 里默认安全,因为:
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22 · NestJs InjectionScopes 注入作用域:默认单例不是偷懒,是最优——以及何时才该打破

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