Category: Web
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SQLAlchemy and JSON values
Storing JSON in a relational database? Sounds like a contradiction, but sometimes, it’s the best solution. SQLAlchemy makes it easy to use a JSON column in Postgres—until you try to update a single value inside it. Turns out, SQLAlchemy doesn’t track those changes by default, leading to silent failures. The fix? Marking the column as…
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Deploying a Spring Boot Application to AWS ECS Fargate
Why AWS ECS is Your New Best Friend for Microservices So, you’ve built a shiny new Spring Boot application, and now you’re wondering how to deploy it without losing your sanity. Enter AWS ECS (Elastic Container Service), the managed container orchestration service that lets you run Docker containers without having to babysit a Kubernetes cluster.…
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Handle The Errors with Flask Correctly
Effective error management in Flask applications is crucial for security, usability, and debugging. Implement custom exceptions to centralize handling and use blueprints for clean error responses. Additionally, log useful details while avoiding exposing sensitive information. This strategy ensures a better user experience and maintains application integrity.
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How to Center Content into a DIV with CSS
It’s always hard to centering content in a div using CSS, particularly for backend developers. I advocate for the use of Flexbox, explaining properties like display, justify-content, and align-items to achieve perfect central alignment. Understanding these concepts eases the frustration of frontend tasks.
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Forgot Password Feature with Python and Flask
The article discusses user authentication options, highlighting the “Forgot Password” feature implementation using JWT in Python and Flask. It outlines a secure workflow for resetting passwords via email, emphasizing the importance of short-lived JWTs for security. Proper authentication procedures enhance user trust and experience in applications.
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How to Solve the CORS error with Flask
This article addresses the common CORS error faced by web developers when connecting a front-end application to a Flask API. It explains the security reasons behind CORS policies, the role of preflight requests, and provides solutions using Flask-CORS.
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OAuth2, Which Workflow to Choose?
In this article, we’re breaking down the essentials of OAuth2, from the classic Authorization Code Flow to the more modern and secure PKCE. Along the way, you’ll learn which grant types fit your project’s needs (and which ones you should leave behind in the digital dust). And don’t worry—I’ll sprinkle in some jokes to keep…
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5 Essential Tips for Securing Your Spring Application
In the world of application security, one weak point can bring everything crashing down. This article explores why layering multiple security measures—like password encryption, session management, and using third-party authentication—is key to protecting your Spring Boot application from potential threats. By combining these strategies, you can create a more resilient defense and minimize the risk…
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Authenticate Your Spring Application With AWS Cognito
Recently, I needed to create an authentication system for one of my applications. But I need to create it quickly and securely. I may use a JWT with email and password, but people are lazy creating new passwords. So, I choose for a social Sign-In with AWS Cognito.
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The 5 Keys to Effective RESTful API Design
A RESTful communication is about standards, naming strategies and readability. In this article, I list 5 points to build an RESTful compliant application. I talk about the HTTP verbs, the nouns used, hierarchy, how to use verbs in the URL and the HTTP response code.
The Dev World - Sergio Lema 