We explain what caches are, and where they're typically used. We can think of a cache as a piece of temporary fast memory used for the retrieval of pre-computed expensive calculations or high latency resources. Caches can exist in hardware or in software. Beyond the CPU caches and web browser caches that most are familiar with, in this episode we also dive into specific use cases of caches in common types of apps.
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Episode 123: What is a Hash Table?

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