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Timo

Timo

15 posts
Building a Simple chatbot with Rust + Qdrant
AI
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Building a Simple chatbot with Rust + Qdrant

IntroductionIn this article, we'll explore how to use the Rust programming language and the vector database Qdrant to build a simple yet effective chatbot. The main point to cover a step by step guide
Timo
Timo
Using Bitwise Operators to build a RBAC in Node.js
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Using Bitwise Operators to build a RBAC in Node.js

Table of contentBitwise Operators in JavaScriptWhat is RBAC?How to implement RBAC using Bitwise in Node.js?ConclusionBitwise Operators in JavaScriptIn JavaScript, The Bitwise Operators perform operat
Timo
Timo
Next.js 15 App Router Localization with next-intl
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Next.js 15 App Router Localization with next-intl

In this article, I will illustrate how to implement next-intl localization in a Next.js 15 application. Localization is a crucial feature for any application aiming to cater to a global audience, ensu
Timo
Timo
Form validation in Flutter with EzValidator
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Form validation in Flutter with EzValidator

When I am working on Flutter with form. For ensuring data integrity, and handling user input errors. I want to show an error message below each TextField, Dropdown, Switch, … if the user does not inpu
Timo
Timo
Build a chat app with ReactJS + Material UI
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Build a chat app with ReactJS + Material UI

In this article, I would like to introduce using ReactJS and material UI to build a Chat App. PrerequisitesMake sure you've installed Node.js and Yarn in your system. You should also have intermediate
Timo
Timo
What are the SOLID principles?
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What are the SOLID principles?

If we want to have good software, the infrastructure should be good first. We should learn more techniques that help to have better quality. Firstly, we have to know SOLID principles. What are the SOL
Timo
Timo
How to use Redux Toolkit in React
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How to use Redux Toolkit in React

In this article, I will explain Redux and delve into Redux Toolkit. A collection of tools that simplify using Redux. These tools help make Redux less daunting and easier to use. What is Redux?Redux is
Timo
Timo
NodeJS Verify and Decode Cognito JWT Token
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NodeJS Verify and Decode Cognito JWT Token

In this article, I will show you how to verify and decode the Cognito JWT Token. Before we go forward, let’s quickly make sure that we understand: What is JWT and what does it have? What is JWT?JWT (J
Timo
Timo
JOI - API schema validation
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JOI - API schema validation

Data validation is one of topics that I am interesting. I always review my code after developed features or fixed bugs. There are many places where need to validate data, it is really terrible. Some c
Timo
Timo
Setup Cognito OTP login with AWS CDK
AWS
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Setup Cognito OTP login with AWS CDK

In this article, I would like to introduce about Amazon CDK and  how to write AWS infrastructure-as-code by TypeScript. Let's go step by step. What is AWS CDK (Cloud Development Kit)?The AWS Cloud Dev
Timo
Timo