MongoDB is one of the most powerful databases available in the market, yet the power of MongoDB is often underutilized because managing 100 databases can be a difficult task. Fortunately, with a few tips and tricks, MongoDB can be easily managed for any size of databases.

To begin with, one should keep in mind that MongoDB does not store data in a traditional, tabular format as seen in many other databases. As such, it is important to be aware of the different document and collection organization design patterns available to users. Without properly organizing data, it can be difficult to search and update documents with ease.

Another important step to managing multiple databases is making use of replica sets. This ensures that the data is always stored correctly and accurately, which is especially important when multiple users are accessing the same data. By setting up a replica set in the master-slave configuration, the data can be backed up to the slave when an alteration is made to the master, making it easy to roll back the changes if an error is made.

One important task to ensure that the data is correctly stored and managed by MongoDB is to regularly audit the databases for errors. MongoDB supports a number of different audit log formats that make it easy to audit users and detect any unauthorized changes. By setting up an audit log, admins can easily identify errors and make the necessary corrections to ensure data accuracy.

Finally, managing multiple databases often involves a lot of scripting as well. MongoDB has built-in scripting and various other tools that make it easy to automate tasks and manage multiple databases. For example, MongoDB Compass provides a graphical user interface that enables users to query data, build indexes, and optimize databases. And the MongoDB shell language makes it easy to write custom scripts to automate tasks, query data, and manage databases.

In conclusion, MongoDB is a powerful database system, but managing 100 databases can be a daunting task. However, by following some simple guidelines, MongoDB can be easily managed for any size of databases. Making use of features such as replica sets, audit logs, and scripting can make it easy to handle these sizable databases. With these tips and tricks, users can unlock the true power of MongoDB and manage hundreds of databases with ease.