Spring Boot & Postgres - Multi-Tenancy & Routing

Spring Boot & Postgres - Text Search

Spring Boot & Postgres - CQRS (Multiple Database)

Spring Data JPA - Basics

Webflux integration with reactive JDBC, to allow non-blocking calls to database.

Message Queue - Postgres

Flash sale system developed with Spring Boot, Spring JPA, RabbitMQ and Angular (Clarity) frontend.

A Ticket Booking system developed with Spring Boot, Spring JPA, Redis and Angular (Clarity) frontend.

The N+1 query problem occurs when the framework executes N additional SQL statements to fetch the same data that could have been retrieved when executing the primary SQL query.