java - Would it be wrong to use a static object instead of a database? -


This is essentially a design pattern question:

I get a database to get a list The stock was expected to ask (shares / securities) which are the most correlated for a given stock.

Instead, I thought I should make an object that would have a stable hashmap and store my data there. Then "query" every time I need it

Is there something wrong with this approach, because I believe it will significantly improve performance with the query of a database for data. The amount of data is relatively small and does not increase so there is no problem. Maybe there are any problems that will bite me later?

I still use the database for backup reasons, but local for quick access to the client To store data on a file system, using the Oscache-like caching API, if the system goes down, then restore the cache from the database and use the cache in your code


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