What is a Cache?

• Cache is a high speed data storage layer where we can store and retrieve data fast and RAM is a best example of cache.
• Transient storage which means its just a copy but not the original storage.
• Store pre-computed value for future requests like employees average salary etc.
• Cache can be used in various applications like Database, Operating system, CDN(content delivery network) and web applications.

Benefits of Cache:

• Improves application performance.
• Reduces load on database.
• Increase IO’s and concurrency in the application.