Cache vs Cookies
Summary: Difference Between Cache and Cookies is that Memory cache helps speed the processes of the computer because it stores frequently used instructions and data. While cookie is a small text file that a Web server stores on your computer. Cookie files typically contain data about you, such as your user name or viewing preferences.
Most of today’s computers improve processing times with cache (pronounced cash). Two types of cache are memory cache and disk cache. Memory cache helps speed the processes of the computer because it stores frequently used instructions and data. Most personal computers today have at least two types of memory cache: L1 cache and L2 cache.
L1 cache is built directly in the processor chip. L1 cache usually has a very small capacity, ranging from 8 KB to 128 KB. L1 and L2 both are levels in cache memory. L1 usually built on processor chip itself. L1 Cache is totally shared between two cores.
L2 cache is slightly slower than L1 cache but has a much larger capacity, ranging from 64 KB to 16 MB. Current processors include advanced transfer cache, a type of L2 cache built directly on the processor chip. Proces sors that use advanced transfer cache perform at much faster rates than those that do not use it. Personal computers today typically have from 512 KB to 12 MB of advanced transfer cache.
Cache speeds up processing time because it stores frequently used instructions and data. When the processor needs an instruction or data, it searches memory in this order: L1 cache, then L2 cache, then RAM — with a greater delay in processing for each level of memory it must search. If the instruction or data is not found in memory, then it must search a slower speed storage medium such as a hard disk or optical disc.
- Online shopping sites generally use a session cookie to keep track of items in a user’s shopping cart. This way, users can start an order during one Web session and finish it on another day in another session. Session cookies usually expire after a certain time, such as a week or a month.
- You can set a browser to accept cookies automatically, prompt you if you want to accept a cookie, or disable cookie use altogether. Keep in mind if you disable cookie use, you will not be able to use many of the e-commerce Web sites.
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