In short, it’s a method of storing data in memory so it can be quickly accessed.
There are 2 types of local caching –
There are also 2 main forms of caching used within large networks –
Why is cache fast? For local caches it uses memory, or RAM, which is volatile and data can be accessed quickly because it’s stored randomly – Unlike hard disks which are slower because data is accessed sequentially, meaning when a search is performed the entire disk is checked from start to finish.
Caching on networks work differently as data is stored in several different locations around the globe – Instead of data being accessed from one point it’s cached on multiple servers. When a request is made the data is pulled from the nearest server from the client.
Local and network caching are different, both have their own strengths. Local caching speeds up data by storing it in RAM which can be grabbed thousands of times quicker than data from a hard disk. Network caching speeds up data on large networks (WAN – Wide Area Network) by passing it to servers close by so data can be quickly pulled.
There are many benefits of network caching such as server offloading and accelerating content delivery –
Caching is an important method of speeding up data to get it to where it needs to be, CDNs for example are a great service to accomplish this by spreading data geographically to improve website speeds – Any website can benefit, like e-commerce, dynamic, static, and content managed.
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