https://edmondscommerce.github.io/magen ... ouncement/
Here's a small snippet of the article.
If your Magento site is currently being flooded with orders and visitors and the server is struggling to cope then I have one simple and easy to action tip for you:
Do as little as possible in the admin
Did you know that every time you update product details and other wise change things in the admin then you are likely to cause one or both of the indexes and caches to require a flush?
In normal operation that is not a big deal, but if your server is being maxed out then you really don’t want to force it to stop serving requests and spend precious seconds rebuilding caches and indexes.
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The rest of the article can be found at the link above.
