#55 create class for database

[MikaelEdwartz]

Added a class with some methods that we can fill with functionality.
The class is meant to represent the database which holds a key and value.

[kappsegla]

Sync this with #44. Locking of database should probably be moved into database methods so the same lock can be used for the database.

[MikaelEdwartz]

Sync this with #44. Locking of database should probably be moved into database methods so the same lock can be used for the database.

Where should the lock be placed? Inside each function or in something like main (or the method) where we have a switch statement choosing what method to call?

[kappsegla]

Sync this with #44. Locking of database should probably be moved into database methods so the same lock can be used for the database.

Where should the lock be placed? Inside each function or in something like main (or the method) where we have a switch statement choosing what method to call?

Each method in database manipulating the map should have the lock code in them, surrounding any calls to the map.
And the Lock object can be created once in the constructor, because it must be shared so all threads tries to lock on the same object

[jLereback]

Great work! The formatting looks good 😋

[AntonLindskog96]

Nice