If you are looking for technology for the real-time web application with a chat feature, or if your application does a lot of reads and writes, NodeJS can be the best choice. Due to the architecture, applications written in NodeJS can withstand heavy loads, so it is often used where scalability and real-time operation are needed.
NodeJS application development allows to create solutions that are fully capable of handling multiple client applications and forget about the limits of RAM.
For example, it can be successfully applied in the financial sector, where applications should be capable of quick processing of hundreds of thousands of transactions and displaying information about their accounts to customers.