垃圾收集缓存通过Javascript WeakMaps [英] Garbage-collected cache via Javascript WeakMaps

问题描述

我想在JS中缓存大对象。这些对象通过键来检索，并且缓存它们是有意义的。但他们不会一下子适应记忆，所以我希望他们在需要的时候被垃圾收集 - 显然GC知道得更好。

制作这些东西很微不足道这样的缓存使用WeakReference或WeakValueDictionary在其他语言中找到，但在ES6中，我们有WeakMap，而 keys 很弱。

有可能使得像 WeakReference 或从 WeakMap ？

$ b $中创建垃圾收集缓存b

解决方案

是否可以从WeakMap制作WeakReference或从WeakMap制作垃圾收集缓存？

对于两个问题，答案都是否。

I want to cache large objects in JS. These objects are retrieved by key, and it makes sense to cache them. But they won't fit in memory all at once, so I want them to be garbage collected if needed - the GC obviously knows better.

It is pretty trivial to make such a cache using WeakReference or WeakValueDictionary found in other languages, but in ES6 we have WeakMap instead, where keys are weak.

So, is it possible to make something like a WeakReference or make garbage-collected caches from WeakMap?

解决方案

is it possible to make WeakReference from WeakMap or make garbage-collected cache from WeakMap ?

AFAIK the answer is "no" to both questions.

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