--- title: "Rodolfo Fernando Juarez (@rfjuarez) | Hashnode" description: "Developer, Back-end, Front-end. Read the latest articles by Rodolfo Fernando Juarez on Hashnode." url: "https://hashnode.com/@rfjuarez" --- @rfjuarez # Rodolfo Fernando Juarez @rfjuarez · Argentina, Córdoba · Joined May 2024 Developer, Back-end, Front-end ### [Dsl, Jdbc Y Filtros Dinámicos](https://rfjuarez.hashnode.dev/dsl-jdbc-y-filtros-dinamicos?utm_source=hashnode&utm_medium=feed) Lenguaje: JavaTemas: API REST, RSQL, DSL, JDBC Sobre este artículo Muchas veces, por cuestiones de desempeño o de diseño, terminamos usando acceso directo a bases de datos mediante JDBC, alejándonos de la comodidad que nos ofrecen los ORM y JPA. Ese ... 6 min read · [rfjuarez.hashnode.dev](https://rfjuarez.hashnode.dev/dsl-jdbc-y-filtros-dinamicos?utm_source=hashnode&utm_medium=feed) [Dec 19, 2025](https://hashnode.com/posts/dsl-jdbc-y-filtros-dinamicos/6945c90c173443560b0e1f38) ### [¡Expone tu servidor local en internet con Docker y Cloudflare Tunnel!](https://rfjuarez.hashnode.dev/expone-tu-servidor-local-en-internet-con-docker-y-cloudflare-tunnel?utm_source=hashnode&utm_medium=feed) Sobre este artículo Nivel de dificultad: Medio/AltoTecnologías utilizadas: Docker, Docker Compose, Java, React, Nginx, PostgreSQL, Cloudflare TunnelMotivación: Encontrar una forma de exponer mis proyectos en internet mientras los desarrollo, utilizan... 5 min read · [rfjuarez.hashnode.dev](https://rfjuarez.hashnode.dev/expone-tu-servidor-local-en-internet-con-docker-y-cloudflare-tunnel?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/expone-tu-servidor-local-en-internet-con-docker-y-cloudflare-tunnel/67d48496a9b029079a7d6a5f) [Mar 14, 2025](https://hashnode.com/posts/expone-tu-servidor-local-en-internet-con-docker-y-cloudflare-tunnel/67d48496a9b029079a7d6a5f) ### [Guide to Turning Mutable Use Cases into Immutable Ones](https://rfjuarez.hashnode.dev/guide-to-turning-mutable-use-cases-into-immutable-ones?utm_source=hashnode&utm_medium=feed) Learn how to transform mutable use cases to immutable in Java, enhancing thread safety and readability with functional programming techniques 5 min read · [rfjuarez.hashnode.dev](https://rfjuarez.hashnode.dev/guide-to-turning-mutable-use-cases-into-immutable-ones?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/guide-to-turning-mutable-use-cases-into-immutable-ones/67453c4f9bb022c6df576406) [Nov 26, 2024](https://hashnode.com/posts/guide-to-turning-mutable-use-cases-into-immutable-ones/67453c4f9bb022c6df576406) ### [Conditional Chain Pattern](https://rfjuarez.hashnode.dev/conditional-chain-pattern?utm_source=hashnode&utm_medium=feed) Level: Intermediate.Language: Java. Recently, I had to refactor a piece of code in the project I’m working on, which involved replacing a block similar to the following pseudocode: void aFunctionalBlock(Params params) { if (conditionEvaluable()) ... 3 min read · [rfjuarez.hashnode.dev](https://rfjuarez.hashnode.dev/conditional-chain-pattern?utm_source=hashnode&utm_medium=feed) [Oct 14, 2024](https://hashnode.com/posts/conditional-chain-pattern/670d99ad3af699f115a34f0e) ### [API REST: How to use URL search params to generate a simple query.](https://rfjuarez.hashnode.dev/api-rest-how-to-use-url-search-params-to-generate-a-simple-query?utm_source=hashnode&utm_medium=feed) Hi! In this article, I would like to share with you an approach that I used to write a library for fetching data using search parameters as query strings. Application context First of all, I should describe some aspects of the project environment tha... 4 min read · [rfjuarez.hashnode.dev](https://rfjuarez.hashnode.dev/api-rest-how-to-use-url-search-params-to-generate-a-simple-query?utm_source=hashnode&utm_medium=feed) [Jun 20, 2024](https://hashnode.com/posts/api-rest-how-to-use-url-search-params-to-generate-a-simple-query/66749cdba2f2b6a072089ac5)