Where is the best place to store an array of frequently accessed data?

Question

PHP

The point is. There are data arrays that will need to be compared and rewritten almost every hour. Those. every hour a new array will be obtained and compared with the saved one, then the saved array is overwritten with a new one, etc.
There are many such arrays - and the above manipulations are performed on each.
The question is, where would be the "better" place to store such arrays? I thought in mysql database or in json files on the server (1 file - 1 array) or there are other options...

Answer 1

mongodb