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Alex Xu
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“In a distributed system, it is insufficient to believe that a server is down because another server says so. Usually, it requires at least two independent sources of information to mark a server down.”
― System Design Interview – An insider's guide
― System Design Interview – An insider's guide
“Vertical scaling, referred to as “scale up”, means the process of adding more power (CPU, RAM, etc.) to your servers. Horizontal scaling, referred to as “scale-out”, allows you to scale by adding more servers into your pool of resources.”
― System Design Interview – An insider's guide
― System Design Interview – An insider's guide
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