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A little signal. Less noise.

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CATEGORIES

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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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RADARGood tools open new possibilities.Explore thoughtfully. Create freely.

Skip to content

A little signal. Less noise.

DISCOVER

Catalog Categories

CATEGORIES

Categories will appear when the source is connected.

More possibility. Less searching.

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

RADAR / PostgreSQLStorage available

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A little signal. Less noise.

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同

同一段单例代码,为什么在高并发下偶尔会创建出两个实例?聊聊哪种单例实现才是真的安全

掘金

About this offer

写在前面单例模式大概是所有设计模式里最简单、也是最容易被写错的一个——网上随便一搜就有五六种写法,简历上也几乎人人都会背"饿汉懒汉双重检测"这几个词。但真放到高并发场景下追问一句"这样写到底安不安全

Offer details

Provider: 掘金
Source: juejin-rss
Score: 57.38
Confidence: 54%

Source evidence

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: Sep 28, 2026Source reliability: 60%
同一段单例代码,为什么在高并发下偶尔会创建出两个实例?聊聊哪种单例实现才是真的安全. 写在前面单例模式大概是所有设计模式里最简单、也是最容易被写错的一个——网上随便一搜就有五六种写法,简历上也几乎人人都会背"饿汉懒汉双重检测"这几个词。但真放到高并发场景下追问一句"这样写到底安不安全
Open source

同一段单例代码,为什么在高并发下偶尔会创建出两个实例?聊聊哪种单例实现才是真的安全

Opens an external website. Availability and terms may change.

Real offers. Useful details.

RADARGood tools open new possibilities.Explore thoughtfully. Create freely.

The catalog shows persisted RADAR opportunities. Storage availability does not mean sources are verified or offers are active.