A project to transition a physical model ofbusiness to electronic commerce. The main task was:working with the data of the supplier of goods and theirsynchronization with the trading platform of the customer.For this purpose, I developed a project on Java. The projectwas implemented on a generated client of Swagger usingRestful API. When designing, I used the adapter pattern,because the incoming data was from the JSON format, andthe XLSX document should have been at the output.Reading and changing the XLSX document was made usingApache libraries. The JSON data is processed with the help ofvarious algorithms, collections and streams. After dataprocessing, the source file was unloaded into a cloud forfurther use of the trading platform. The data had to beupdated every day, so I automated the process of starting aprogram using Linux and the Cron of the Task.

Retail trade