Have you ever watched a mile-long freight train rumble by and wondered how one locomotive can pull more than a hundred fully loaded cars? The locomotive weighs maybe 150 metric tons, and each car is about 100 metric tons, which means it’s hauling 10,000 tons.
Caching is I think a spectrum, some operations are so cheap and fast that caching them is not worth it. It can be taken to the extreme: Salsa, Buck. In my experience, there is usually one main expensive operation in the system (in my case: Markdown parsing), and adding a cache in front of that is generally sufficient.
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По меньшей мере 17 объектов США были повреждены в результате ударов Ирана. Их выявила газета The New York Times (NYT) на основании высококачественных коммерческих спутниковых снимков, проверенных видеороликах в социальных сетях, заявлениях американских официальных лиц и иранских государственных СМИ.
Последние новости。谷歌是该领域的重要参考
Women's health。关于这个话题，yandex 在线看提供了深入分析
increase productivity