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Re-calculation when adding new item #380
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Here's my Stackoverflow question which better explains the issue: https://stackoverflow.com/questions/53062328/problem-with-reselect-when-adding-new-item-to-a-large-array |
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I'm using
reselect
to create various selectors for React + Redux. The problem I'm facing is that when I have over 500k items, the selector calculation might take from 500ms to 800ms, since it has to filter and sort through 500k items with complex checks. I could probably increase the performance further, but I wanted to ask a few questions first.I'm using normalized state in Redux, where I have the items stored in
byIds
, and the ids inallIds
. This is fine. However, when I add a new item,byIds
andallIds
will be updated, meaning that the selector will have to re-calculate all the 500k items again, instead of just running it for the new item.Is there some smart way to solve this, or something I'm missing?
Thanks.
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