The difference between reloading and restarting a service ?

Generally speaking, if we make changes to any configuration files, the corresponding service needs to be restarted or reloaded in order for the changes to be reflected.

We restart or reload the relevant service following any modifications to ensure they are reflected.


restarting the service indicates 
--------------------------------------
disconnect the service and reconnect it again
A service that is currently operating will be terminated and restarted if you restart it. 

This is a disadvantage of restarting because the concerned program /application will likewise be stopped and unavailable to users.


Reloading the service indicates 
--------------------------------------
All of the changes will be successfully updated and reflected without disconnecting. 
Therefore, changes will be successfully updated and the concerned program won't be stopped either.  

The relevant application will be accessible to users around-the-clock.

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