Caching for Writes Although you’ll find yourself using caching for reads more often, there are some use cases where caching for writes make sense. For example, if you make use of a write-behind cache, you can write to a local cache, and at some later point the data will be flushed to a downstream source, probably the canonical source of data. This can be useful when you have bursts of writes, or when there is a good chance that the same data will be written multiple times. When used to buffer and potentially batch writes, write-behind caches can be a useful further performance optimization.
