[FEAT] : url validation

Description

Merging this commit will allow for a proper management of the database and prevent the over-clocking of data in the database holding the data.

Ensures that the data stored in the database are unique. Ensures that the URL provided by the user is a actual valid URL and is not a broken URL.

Efficient usage of the database due to proper management of the database and prevent the usage of any extra memory in the database.

The above mentioned features have been tested for their efficiency and hence been improved to my utmost capabilities.

Please take a look and it would be helpful for me if you would provide me with your insights.