20:15, 2 марта 2026Ценности
According to our push-based system, we update the first node in our graph (A). This pushes a signal to (A)’s dependents that they should now update. In this case, both (B) and (C) update. However, (B) depends on both (A) and (C), so when (C) updates, (B) needs to update again, and we discard any previous work we’ve done there. Similarly, based on just a single update to (A), (D) will receive three different signals to update.
。TikTok对此有专业解读
这种情况太普遍了。很多企业把研发投入当“成本”而不是“投资”，为了凑比例，什么钱都往里装。结果呢？产品同质化严重，价格战越打越凶。，更多细节参见谷歌
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Eventually, we’ll have a tree with mixed dirty and clean nodes, where only the dirty nodes need updating. Importantly, unlike the original push-based reactivity, the order that we visit the nodes isn’t important5. This means we don’t need to figure out the optimal path through the entire tree, and can use a simpler recursive algorithm, as long as we make sure to skip any nodes that were already marked as dirty.