What is a monolithic application?

When people talk about scaling, they often use the term monolithic application. But what is this, exactly? Usually, this refers to a software or an infrastructure where everything (including the presentation part, backend, and data part) is combined in a single block, called a monolith. In our case, we are focusing on the infrastructure. To explain the concept of a monolithic application, we are going to build an example application with the following components as shown in the figure below:

  • A MySQL database where there is only one table with a single numeric field
  • A backend frontend Java/Tomcat listening on the default 8080 port component that reads the database, shows the value, and increments the numeric ...

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