Enterprise Java
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Testing CORS in Spring Boot
CORS (Cross-Origin Resource Sharing) is a mechanism that allows resources on a web server to be requested from another domain.…
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Boost DTO Creation with Records & MapStruct in Spring Boot
DTO (Data Transfer Object) creation is a common task in Spring Boot applications. Traditionally, this involved writing boilerplate code for…
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How to Fix PSQLException Operator Does Not Exist Character Varying = UUID
When working with Spring JPA and PostgreSQL, you might encounter an error like PSQLException: Operator Does Not Exist: character varying…
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Implementing an Elasticsearch Aggregation Query in Java
Elasticsearch is a distributed search engine that is designed for scalability, flexibility, and high performance. It allows us to store,…
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UDP Messaging with Aeron
UDP (User Datagram Protocol) is a connectionless protocol used for transmitting data across networks. Unlike TCP, which ensures reliability and…
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Logging MyBatis SQL Queries to the Console
MyBatis is a popular Java persistence framework that enables us to interact with databases using SQL queries. One of the…
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Finding the Max Value in Spring Data JPA
When working with Spring Data JPA, retrieving specific values from a database is a common requirement. One such requirement is…
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Integrating Java Enums with JPA and PostgreSQL Enums
Enums are a powerful feature in Java, allowing us to define a fixed set of constants. When using JPA (Java…
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Using Reactor Mono.cache() for Memoization In Spring
Memoization is an optimization technique used to speed up applications by storing the results of expensive function calls and reusing…
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