DataBase - Difference between In-Memory Database, Normal DataBase & Caching | In Memory Database #2

Cache - By definition means it is stored in memory. Any data stored in memory (RAM) for faster access is called cache. ...
In Memory Database - It has all the features of a Cache plus come processing/querying capabilities.

how would you recover your data after a machine with an in-memory database reboots or crashes?
Well, with just an in-memory database, there’s no way out. A machine is down the data is lost. Forget about it.

In-memory databases don’t use disk for non-change operations.
In-memory databases do use disk for data change operations, but they use it in the fastest possible way.
The main reason to keep a database in-memory is performance.

Small footprint − Around 1.5MB jar file size -- HSQL DATABASE

You can use traditional SQL query for in-Memory database.

In Memory DataBase Wiki Pedia:

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Thanks & Regards,
Debu Paul

[devadastv]

Thanks. It would be really good if you can also demonstrate how you can persist the data to HDD using IMDB as you have mentioned in your video. Good job, nice explanation.

[atulgosavi]

Thank you sir... For explaining in simple English.. one thing which is not clear is -
Different Purpose of In-memory DB?? &
Can v Shift from Traditional DB to In- Memory DB???

[shivangiagrawal]

Is it possible to take the snapshot of in-memory database and store it in disk? (Containerized environment)

[saumendrasahu]

Hi,
Is it possible to create mongo db in spring boot in memory ?

[brenmatos]

Maybe you kindly ask for sharing your video and not "expect" us to share.