Скачать или смотреть Lets Build Twitter From the Ground Up: Episode 202 || Java, Spring Boot, PostgreSQL and React

Building large scale application is more difficult than many people understand or expect. Join me in this long running series where I set out to duplicate one of the most popular social media platforms ever creating using Java, Spring Boot, Spring Security, PostgreSQL data, React JS web application framework and more.

In this episode we are hopping back into the backend to work on the additional features of messaging for our application. We start out by fixing a bug in the ConversationComparator then move onto creating a new class to be able to react to messages. After creating the Reaction class we add the new fields to the Message class including replyTo, reactions, and hiddenBy. We setup a new repository for our message reactions, as well as a new MessageReactionService to allow us to create and modify new reactions. Once we have completed work on the Reactions we moved onto the MessageService to add in the logic to react to a specific message as well as the route in the MessageController to send the reaction to the backend. After completing all of this we tested the changes and made sure everything was working correctly.

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