Cross-origin resource sharing is a mechanism that allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served. A web page may freely embed cross-origin images, stylesheets, scripts, iframes, and videos

Private Routes in React Router (also called Protected Routes) require a user being authorized to visit a route (read: page). So if a user is not authorized for a specific page, they cannot access it. The most common example is authentication in a React application where a user can only access the protected pages when they are authorized (which means in this case being authenticated). Authorization goes beyond authentication though. For example, a user can also have roles and permissions which give a user access to specific areas of the application.

MongoDB is a great document store database which can be used in most types of app development projects. MongoDB is built using C++ language, and it is free of charge (there’s an open-source edition). It was created in 2007, and it has only grown more popular ever since. Nowadays, many believe that it has become the most frequently used NoSQL database. However, just because it is so great doesn’t mean that it can work on its own. Take a look at six things to know before you start with MongoDB implementation at your organization. Use the right tools No one can deny that getting information from a database and getting it in an understandable form is one of the most important steps in the process of intelligible insights extraction from the data. This is no different even when you have a MongoDB (NoSQL database) implemented at your company. A problem many organizations face once they begin gathering and storing data in various places is reconciling data from traditional relational (SQL) and NoSQL databases.