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linux
02 April 2022

Enable fingerprint scanner on pop os 21.10

In this post, I document how to enable the fingerprint reader on POP OS 21.10 since it was absent in the user settings.

Rafael Carrillo
Rafael Carrillo
AWS
17 January 2022

Connecting postman to Amazon Cognito using the JWT id_token

This post will help us automate getting the Cognito JWT id_token by using a pre-request script in postman.

Rafael Carrillo
Rafael Carrillo
Java
21 October 2021

Set up liquibase on maven

In this post, I will show you how to set up a Maven project to include database schema management using liquibase.

Rafael Carrillo
Rafael Carrillo
Windows 11
06 October 2021

Fix Windows 11 ms-settings error

Today Windows 11 was launched, so I just upgraded my five years old Windows 10 install. Everything went fine until the taskbar was utterly empty, the start button disappeared, apps buttons were gone, and even the clock was

Rafael Carrillo
Rafael Carrillo
Java
05 August 2021

Use builders over long constructors

Sometimes we make mistakes like defining long constructors for data-intensive classes. Sometimes we are used to adding multiple constructors to fit our needs, leading to classes that are hard to read because the dev has to review the

Rafael Carrillo
Rafael Carrillo
Java
30 July 2021

Request Scoped Caching with Spring

Implementing a cache allows us to save data temporally in the memory to be used later in subsequent requests requiring the same data without additional requests to an external service or a database. Sometimes a requirement needs a

Rafael Carrillo
Rafael Carrillo
linux
30 June 2021

Enabling Face Authentication on Linux with Howdy

I recently bought a Lenovo T15 to have a more comfortable and portable workstation which comes with an integrated IR + Webcam module. This module is meant to be used with Windows Hello authentication which uses IR emitters plus

Rafael Carrillo
Rafael Carrillo
Java
26 April 2021

Transaction propagation in spring framework

An important matter in a transaction is to specify how we handle an exceptional condition when we are adding, updating, or deleting data in our database; in some cases, we might be doing data operations in several tables

Rafael Carrillo
Rafael Carrillo
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