Author: Sergio Lema
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4 Ways to Protect Your Application From Being Hacked
In this article I describe 4 ways to secure an application to avoid 90% of the attacks. 4 simple ways to put in place in every kind of application. From using HTTPs to an external configuration system.
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How to Solve a NullPointerException Correctly
In Java, one of the first exceptions everyone sees is the NullPointerException. Unfortunately, it took me some time to understand how to solve it correctly. In this article, I explain how to solve them correctly.
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How Not To Create An Application
In this article I explain how not to create an application. I describe a real use case where I worked some years ago. Where we build a big application with a lot of complexity. But no clients and no profits.
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7 Habits of Great Developers
In this article I talk about the 7 habits that differentiate a simple developer from great developers. The difference is not in the intelligence or the age but in the habits.
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Advantages and Disadvantages of the JWT
A JSON Web Token (JWT) is widely used for stateless application authentication, but has limitations. It consists of three parts, including a signature for verification. However, it is susceptible to decryption, thus sensitive information like passwords should not be stored. Despite drawbacks, it offers a condensed JSON object and industry standard authentication. It’s important to…
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Workflow of the Forget Password Strategy
In this article I explain the workflow of the password recovery strategy. I explain how to link the new password with the user, and how to generate a secure link that can only be used once.
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3 Steps to Get a Job as a Junior With No Experience
Times are difficult to find a job. I’ve interviewed a lot of Junior developers. And here are the 3 main points that make me decide to hire the developer or not.
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Complexity vs Urgency
In this article I explain how to identify and prioritize the tasks depending on their complexity and urgency. I explain the not complex and not urgent tasks, the complex but not urgent tasks, the not complex but urgent tasks and the complex and urgent tasks.
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4 Performance Optimization Techniques for Your Application
In this article, I show 4 performance techniques to optimize the response time of an endpoint. 4 steps which goes from the most simple to the most complex as: memoization, pagination, denormalization and cache.
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Deploy a React Frontend to AWS S3
In this article I will go step by step to deploy a React frontend application to AWS S3. From creating the S3 Bucket to deploy the React project.
The Dev World - Sergio Lema 