Persistence

What is persistence?

Persistence refers to information that continues to exist even after the process or application that created it is no longer running.

Data that is stored in memory is usually destroyed when the application shuts down, unlike persisted data that is stored across time and can live independent of the system that created it.

We persist data so that later it can be:

• Retrieved

• Processed

• Transformed

• Analyzed

Storage options to persist data

• Relational databases

• NoSQL databases

• File systems

• etc