What is the best way to store client activity data on the server without using a database?

Question

Sessions

Hello. It is only necessary to run a certain script the first time a user visits a certain page. That is, we need a mechanism for permanent storage of some logical variable about each user, by the value of which the script is included once.
Initially I tried to put data into the session, but after logout it is cleared. For certain reasons, no data can be put into the database either.
Please advise how best to proceed. Perhaps it makes sense to get confused with the sqlite file.
Thanks in advance.

Answer 1

Tarantool, Redis, etc.
That is, In-Memory DB is just a task for them.