When should I consider using a in memory database and what are the issue to look out for?

Question

I was just think that now it is common to have enough RAM on your database server to cache your complete database why are the specialist in memory database (e

Answer 1

Most probably there are just no mature products of memory databases which could be used as a full replacement for a classic database.

Relational database are a very old concept. Although there were many approaches to move forward and develop new technologies, eg. object oriented databases, the relational databases didn't really change their concepts. Don't expect things to change too fast, since databases didn't change much in the last ten or fifteen years or even longer.

I think, development of technologies is not as fast as one might believe. It takes decades for new concepts to be matured and established. First of all in database technologies, where maturity is much more important then anything else.

In ten or twenty years, databases are probably not the same anymore as they are today. If in-memory databases are the future - nobody can tell this today - they just need some more time to develop.