What is Cache and What is its Purpose? Why is Cache Used?
Cache can be defined as a cache memory used in computer systems. Cache refers to storing data in advance in the memory, allowing for faster response to the next request for that data. Cache is used to increase the processing speed of a computer and it has various types.
Cache is a method used in computer systems to store data and enable quick access; it means storing data in advance in the memory, allowing for faster response to the next request for that data. Caches are typically made up of low-speed memories (such as RAM) and make the data instantly accessible.
Types of Cache
Although there are various types of cache, the three most commonly used types are: CPU cache, web browsing cache, and file cache.
CPU cache (Central Processing Unit Cache) is a cache used by the processor and is used to store data and instructions for the processor. This cache helps the processor access data and instructions faster, thereby increasing the processing speed of the computer. CPU cache (Central Processing Unit Cache) is a cache used by the processor to store data and instructions. This cache helps the processor access data and instructions faster, thereby increasing the processing speed of the computer. CPU cache is used by the processor and typically consists of three different levels: L1, L2, and L3. L1 cache is the fastest cache used by the processor and is usually the smallest. L2 and L3 caches are slower but larger, allowing for more data storage.
Web browsing cache (Web Browser Cache) is a cache used by web browsers to speed up the display of web pages. This cache stores certain components of the web pages you visit (such as images and CSS styles), allowing the page to load faster when you revisit it without needing to reload these components.
File Cache is a cache used during the reading and writing of files. This cache stores the data used during file operations, allowing for faster opening and processing of files.
Database Cache is a cache used to store the results of database queries. This cache stores the results of frequently executed database queries, reducing the load on the database and speeding up query processing.
Why is Cache Used?
Cache is used for various reasons. Caches are used to increase processing speed, making the computer run faster. Caches are also used to improve data transfer speed during data access. For example, when a database query is made, the result is retrieved from the database and stored in the database cache. In the next query, instead of searching for the same result, it is retrieved from the database cache, resulting in faster data transfer.
Cache can also be used to enhance data security. For example, data stored in a web browsing cache remains safe even if it is compromised by a hacker, as the hacker’s access to the data is prevented. Cache also helps maintain data consistency. For instance, when a data change occurs in a database, the database cache is updated, ensuring data consistency.
In general, cache is used in computer systems to increase data access speed, improve data transfer speed, enhance data security, and ensure data consistency.
Cache Usage in News Software
News software platforms are among those that require cache usage the most. This is because they are constantly being updated, and the number of visitors can significantly increase depending on the intensity of the news flow, both directly and through search engine referrals. Furthermore, in the case of an important news event, the pressure on the website can intensify due to a high volume of visitors.
Therefore, cache usage is essential for a news website. TE Bilişim, for example, supports news websites by using a professional caching structure for visual and style files through a CDN infrastructure, aiming to improve the performance of the pages by utilizing cache technology effectively.
Although CDN technology incurs additional costs, the benefits it brings to search engine rankings and visitor traffic make it worthwhile. Your content becomes more user-friendly and gains visibility on platforms like Google and other search engines.