teleren/devto huggingface dataset:
VPC Flow Logs
Tags: network, aws, devops, cloud
Published: 2024-04-23 19:01:54

Hi there! I wanted to share some valuable insights with you about AWS Flow Logs, which can be an invaluable tool in working with AWS cloud.

## What are AWS Flow Logs?

AWS Flow Logs is a mechanism that allows users to monitor network traffic within the AWS infrastructure. It's somewhat like a "black box" for the cloud - it records where the traffic is coming from, where it's going, and how much data it's transmitting. Flow log data can be published to the following locations: Amazon CloudWatch Logs, Amazon S3, or Amazon Data Firehose


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/elo6u8mihsoapbezjy27.png)



## Key Benefits:

- Easier Troubleshooting: When something isn't working as it should, Flow Logs help you find the root cause of the problem. Sometimes, just a glance at the network traffic data is enough to find the source of the issue.
- Enhanced Security: With Flow Logs, you can quickly detect and analyze suspicious or unauthorized network activities.
- Performance Optimization: Understanding the dynamics of network traffic is key to optimizing the performance of applications and services in the cloud. With Flow Logs, you can identify "bottlenecks" in the infrastructure and optimize its performance.

## Flow log records

The flow log records represent network flows within your VPC. By default, each record captures an IP traffic flow. These records are formatted as strings with fields separated by spaces, containing for example information such as the source, destination, port and protocol of the flow. When setting up a flow log, you have the option to use the default format or specify a custom one.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/iub7aq8exl69j82cttu9.png)



## How to Start Using AWS Flow Logs?

The best part is that you can enable Flow Logs yourself, with minimal effort. Just use the AWS console or command-line tools to activate this feature at the VPC, subnet, or network interface level. 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7lbsovx4bg3iav6ar0le.png)


You can watch my [video tutorial on YouTube](https://youtu.be/Xfo4xR7FT8g?feature=shared), which shows step by step what exactly needs to be done. Which IAM policy to choose, what IAM role. How to create a Log group in CloudWatch and how to save logs from network interfaces there. I walk you through how to use AWS Flow Logs and interpret the collected data step by step. It's a great way to deepen your knowledge of the AWS cloud.

{% embed https://www.youtube.com/watch?v=Xfo4xR7FT8g %}

Documentation: https://docs.aws.amazon.com/vpc/latest/userguide/flow-logs.html
2024-04-23: Interviews
Tags: devjournal
Published: 2024-04-23 18:59:33

Last week was pretty slow at the startup. We're kind of in a stasis at the moment until we get funding.

In the meantime, we are trying to get the RAG up and running, but we ran into issues with the model's latency and some of the RAG prompting that needs to be added to what we have right now so that it's able to properly access the data. I've been working on that. I think I'm going to have to redo the embedding into the vector database because our backend engineer followed a somewhat ham-fisted approach, which works for testing purposes but it's not necessarily robust.

However, a lot of my time last week was also dedicated to studying for a technical interview I had on Friday. I took a lot of time just watching videos on DSA and system design and taking notes for Leetcode exercises. Thankfully, I did pass the interview on Friday, so I'm looking forward to this new opportunity. I also had 4 other interviews/screeners, so I prepared for those.

Otherwise, I don't really have much to report. Hopefully more for next week. Cheers.
Frontend Mentor.io Challenge: PhotoSnap Website
Tags: webdev, frontend, coding, journel
Published: 2024-04-23 18:56:53

**Project Name:** [PhotoSnap](https://www.frontendmentor.io/solutions/photosnap-website-built-with-vite-css-grid-and-sass-LyjD7VoM4z)
**Level:** Advanced
[Source Code](https://github.com/AjeaSmith/fem-photosnap)
[Live](https://fem-photosnap-pearl.vercel.app/)


![screenshot of photosnap website](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/438e376i2xdyyw5cvk55.jpg)

**Setup**: I used Vite with Sass and deployed with Vercel. 

**Overview:** I got to utilize CSS grid, and I'm starting to get more comfortable with it now. 

Things I learned
- Mixins for media queries ([helpful link](https://www.freecodecamp.org/news/the-100-correct-way-to-do-css-breakpoints-88d6a5ba1862/), Thanks Kevin P
- (Note to self) Use the layout grid option in Figma to help visualize columns and rows.
- Making a card taller than others using a CSS grid
- How to deploy a Vite project to Vercel (what I learned in the previous project, but just forgot to mention)
310. Minimum Height Trees
Tags: leetcode, php, programming, algorithms
Published: 2024-04-23 18:54:11

310\. Minimum Height Trees

Medium

A tree is an undirected graph in which any two vertices are connected by _exactly_ one path. In other words, any connected graph without simple cycles is a tree.

Given a tree of `n` nodes labelled from `0` to `n - 1`, and an array of `n - 1` `edges` where <code>edges[i] = [a<sub>i</sub>, b<sub>i</sub>]</code> indicates that there is an undirected edge between the two nodes <code>a<sub>i</sub></code> and <code>b<sub>i</sub></code> in the tree, you can choose any node of the tree as the root. When you select a node `x` as the root, the result tree has height `h`. Among all possible rooted trees, those with minimum height (i.e. `min(h)`)  are called **minimum height trees** (MHTs).

Return _a list of all **MHTs'** root labels_. You can return the answer in **any order**.

The **height** of a rooted tree is the number of edges on the longest downward path between the root and a leaf.

**Example 1:**

![](https://assets.leetcode.com/uploads/2020/09/01/e1.jpg)

- **Input:** n = 4, edges = [[1,0],[1,2],[1,3]]
- **Output:** [1]
- **Explanation:** As shown, the height of the tree is 1 when the root is the node with label 1 which is the only MHT.

**Example 2:**

![](https://assets.leetcode.com/uploads/2020/09/01/e2.jpg)

- **Input:** n = 6, edges = [[3,0],[3,1],[3,2],[3,4],[5,4]]
- **Output:** [3,4]


**Constraints:**

- <code>1 <= n <= 2 * 10<sup>4</sup></code>
- <code>edges.length == n - 1</code>
- <code>0 <= a<sub>i</sub>, b<sub>i</sub> < n</code>
- <code>a<sub>i</sub> != b<sub>i</sub></code>
- All the pairs <code>(ai, bi)</code> are distinct.
- The given input is **guaranteed** to be a tree and there will be **no repeated** edges.

```
class Solution {

    /**
     * @param Integer $n
     * @param Integer[][] $edges
     * @return Integer[]
     */
    function findMinHeightTrees($n, $edges) {
        if ($n == 1 || empty($edges)) {
            return [0];
        }

        $ans = [];
        $graph = [];

        foreach ($edges as $edge) {
            $u = $edge[0];
            $v = $edge[1];
            $graph[$u][] = $v;
            $graph[$v][] = $u;
        }

        foreach ($graph as $label => $children) {
            if (count($children) == 1) {
                $ans[] = $label;
            }
        }

        while ($n > 2) {
            $n -= count($ans);
            $nextLeaves = [];
            foreach ($ans as $leaf) {
                $u = current($graph[$leaf]);
                unset($graph[$u][array_search($leaf, $graph[$u])]);
                if (count($graph[$u]) == 1) {
                    $nextLeaves[] = $u;
                }
            }
            $ans = $nextLeaves;
        }

        return $ans;
    }
}
```


**Contact Links**

- **[LinkedIn](https://www.linkedin.com/in/arifulhaque/)**
- **[GitHub](https://github.com/mah-shamim)**
Dicas para iniciantes na programação:
Tags: newbie, programmers, dicas, ai
Published: 2024-04-23 18:51:35

**1. Defina seus objetivos:**

O que você quer alcançar com a programação?

-Você quer desenvolver sites, aplicativos, jogos ou algo mais?
-Saber seus objetivos te ajudará a escolher a linguagem de programação certa e a se manter motivado.

**2. Escolha a linguagem de programação certa:**

-Existem muitas linguagens de programação diferentes, cada uma com seus próprios pontos fortes e fracos.
-Para iniciantes, algumas linguagens populares e fáceis de aprender incluem Python, JavaScript e Java.
-Você também pode considerar a linguagem de programação que é mais utilizada na área que você deseja trabalhar.

**3. Aprenda os fundamentos:**

-Antes de começar a escrever código, é importante aprender os fundamentos da programação.
-Isso inclui conceitos como variáveis, tipos de dados, operadores, estruturas de controle e funções.
-Existem muitos recursos online e offline disponíveis para te ensinar os fundamentos da programação.

**4. Pratique com projetos reais:**

-A melhor maneira de aprender a programar é praticando.
-Comece com projetos pequenos e simples e vá aumentando a dificuldade gradualmente.
-Você pode encontrar ideias para projetos online ou criar seus próprios projetos.

**5. Participe de comunidades e fóruns online:**

-Existem muitas comunidades online de programadores onde você pode fazer perguntas, obter ajuda e se conectar com outros programadores.
-Isso pode ser um ótimo recurso para iniciantes que estão com dificuldades ou que simplesmente querem aprender mais sobre programação.

**6. Aprenda a ler documentações e buscar soluções:**

-Como programador, você precisará ser capaz de ler e entender documentações técnicas.
-Isso te ajudará a usar bibliotecas e frameworks, e a solucionar problemas que você encontrar.
-Existem também muitos recursos online que podem te ajudar a encontrar soluções para problemas de programação.

**7. Não desanime:**

-Aprender a programar pode ser desafiador, mas também é muito gratificante.
-Não desanime se você encontrar dificuldades no caminho.
-Continue praticando e persistindo, e você eventually alcançará seus objetivos.
台灣伺服器
Published: 2024-04-23 18:43:42

在当今数字化时代，服务器扮演着连接世界的桥梁，而香港作为亚太地区的科技中心，拥有先进的网络基础设施和优越的地理位置，成为众多企业和个人选择的服务器托管地之一。本文将探讨香港服务器的特点、DDoS攻击防范、服务器租用等话题，以及香港作为海外服务器托管地的优势。

香港服务器的特点
高效性：香港服务器采用先进的硬件设施和优化的网络架构，提供高速稳定的数据传输和处理能力，确保用户业务的顺畅运行。
地理优势：位于亚太地区的香港，与中国大陆、东南亚等地区连接紧密，具有较低的网络延迟和良好的国际网络通信质量。
海外连接：香港服务器提供海外连接，使得跨境业务和国际用户访问更加便捷快速，为企业拓展海外市场提供了便利条件。
DDoS防护：香港服务器配备强大的DDoS攻击防护系统，能够及时识别和应对各类网络攻击，保障服务器和用户数据的安全性。
专业支持：香港的服务器托管服务提供商拥有专业的技术团队和全天候的技术支持，为用户提供及时有效的技术支持和服务保障。
**_[台灣伺服器](https://www.varidata.com/zh-tw/server/tw)_**
DDoS攻击防范
DDoS攻击是网络安全领域的一大挑战，针对此类攻击，香港服务器采取了多层次的防护措施：

流量清洗：服务器提供商配备了流量清洗设备，能够对大流量的攻击数据进行过滤和清洗，确保正常用户的访问不受影响。
攻击监测：通过实时监测网络流量和行为分析，及时发现并应对潜在的DDoS攻击行为，提高网络安全防护能力。
IP黑白名单：设置IP黑白名单，限制异常流量和恶意IP的访问，有效减轻DDoS攻击带来的影响。
容灾备份：建立容灾备份机制，保证在遭受DDoS攻击时能够迅速切换到备用服务器，确保业务的连续性和稳定性。
服务器租用与專屬伺服器
企业和个人在选择服务器时，可以根据自身需求考虑租用共享服务器或專屬伺服器：

服务器租用：租用共享服务器成本较低，适合个人网站、小型企业等需求较小的用户群体，提供稳定的基础服务。
專屬伺服器：專屬伺服器提供独享的硬件资源和更高级的性能配置，适合大型企业、高流量网站等对性能和安全要求较高的用户群体。
台湾服务器与香港服务器比较
虽然台湾服务器和香港服务器都位于亚太地区，但在一些方面存在差异：

网络连接：香港服务器的网络连接更加国际化，面向全球用户提供服务，而台湾服务器更专注于台湾地区和周边地区的网络连接。
地理位置：香港地理位置优越，与中国大陆、东南亚等地连接更紧密，而台湾服务器更接近东亚地区。
法律法规：由于香港和台湾具有不同的法律体系和政策环境，企业在选择服务器托管地时需要考虑相关法律法规的差异。
香港高防服务器与大带宽服务器
对于对网络安全和高带宽要求较高的用户，可以选择香港高防服务器或大带宽服务器：

香港高防服务器：专注于提供优秀的DDoS攻击防护能力，保障用户服务器和数据的安全。
大带宽服务器：提供高速大带宽的网络连接，适合需要处理大量数据传输和高访问流量的用户，如视频直播、大型网站等。
结语
香港服务器作为亚太地区的网络枢纽，以其高效性、安全性和国际化特点吸引着众多用户的关注与选择。在面对网络安全挑战和业务发展需求时，选择适合自身需求的服务器托管服务提供商至关重要，期望本文能为用户在香港服务器领域的了解和选择提供一些参考和指导。
How To Create Ai Bot With Whatsapp
Tags: android, chatgpt, whatsapp
Published: 2024-04-23 17:35:04

Want a Chatbot Assistant on WhatsApp? Here's How!
Imagine having a helper on [WhatsApp](https://thegbwa.net/whatsapp-gb-25-most-faqs/) who answers questions, takes orders, or schedules appointments. That's the power of a chatbot! Here's a quick look at how to get yours started:


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8kdbpv4l1iae8dfzqqfs.png)

Go No-Code!  You don't need to be a programmer. Platforms like Landbot or ManyChat allow you to drag-and-drop chat flows and buttons, making chatbot creation easy.

Connect WhatsApp Business: Sign up for a WhatsApp Business account and link it to your chosen platform. This lets your chatbot chat with users on WhatsApp.

Design Your Flow:  Think about what your chatbot will do. Will it answer FAQs, collect info, or place orders?  Build a conversation flow using buttons, text messages, and media.

Train Your AI (Optional):  Some platforms let you add basic AI through pre-built responses or connecting to services like Google Dialogflow. This allows your bot to understand natural language better.

Test & Launch:  Before unleashing your bot on the world, test it thoroughly! Make sure it gives clear answers and offers a smooth experience. Then, it's ready to chat on WhatsApp!

Also Remember: This is a initial guide.  Because, Each platform has its own features and complexities. But with a little exploration, you can create a helpful and friendly chatbot that brings the future of chat to your WhatsApp or any other messaging App!
Official Nuxt Certification Arrives! Early Bird pre-orders are open.
Tags: javascript, webdev, cert, nuxt
Published: 2024-04-23 18:43:00

Nuxt developers, exciting news! The official Nuxt Certification program is here, brought to you by a powerful collaboration between NuxtLabs, Vue School, and [Certificates.dev](https://certificates.dev/).

**Validate Your Nuxt Skills**

This program offers two certifications: Certified Nuxt Developer and Certified Senior Nuxt Developer. Earning your certificate demonstrates your competency in core Nuxt functionalities and best practices, showcasing your expertise to potential employers or clients. Exams combine both multiple-choice questions and practical coding challenges. All exams are proctored to ensure the integrity of the examination process.

**Reviewed by the Nuxt Creator Himself**

Here's a special detail Nuxt fans will appreciate: Sébastien Chopin, the creator of Nuxt, is personally reviewing the exam question sets and code challenges. This ensures the exams accurately assess the skills necessary to truly master Nuxt.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8yr1tjj9jpihsun8n5b1.png)

**Support the Nuxt Ecosystem**

An added benefit for the Nuxt community: a portion of the program's revenue directly supports Nuxt, its core team, and the framework's ongoing development. By getting certified, you not only strengthen your own skills but also contribute back to the Nuxt ecosystem!

**Flexible Learning Options**

The Nuxt Certification program caters to various learning styles. Choose self-study for a personalized pace, or opt for the bootcamp experience. Bootcamps provide intensive online workshops tailored to each certification level, along with the self-study materials for a well-rounded learning journey.

**Pre-Order Bonus: Limited-Time Discount!**

Act fast! The program just launched its pre-order phase. Secure your Nuxt Certification for up to 60% off during the next 24 hours only. Visit the official website, [certificates.dev/nuxt/](https://certificates.dev/nuxt/), to lock in your discount and embark on your Nuxt mastery journey!
Without a system
Published: 2024-04-23 18:34:52


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/j1605fkyh088w3y7oh6z.jpg)

The computer systems represent much more than simple phrases like _"it crashed", "the system is malfunctioning", or "it's slow"_. These common expressions sometimes underestimate the complexity and impact of systems on an organization's operations. Everyone wants their systems to be reliable, stable, and available when needed.

However, just like in other areas of life, systems can surprise us with unexpected crashes or failures. Most of the time, the design and operation complexity of systems may seem abstract to those who are not familiar with them. This is where the crucial role of software developers comes into play.

From the initial design process, there is a vision of the system: its structure, its essential components, and how they interact with each other. Each developer imagines a mental map where each component intertwines with another, similar to the functioning of a human body.

When facing an unfamiliar system, we start to build a mental map of its components and connections. This process gradually allows us to understand the critical aspects of the system.

I just want to illustrate the true essence of systems and their complexity in a way that is accessible to those not familiar with technology. I want to highlight the important work done by software developers.

For those taking their first steps in this field, I want to offer an analogy: systems can be compared to patients. It is essential to learn to visualize them, understand where different actions occur, and how information flows within them. Like people, systems are also influenced by their environment and relationships.

Every line of code has a significant impact on the functioning of these "patients". The ability to understand and anticipate how different components of a system interact is fundamental to succeeding in this field.

It is important to cultivate curiosity, patience, and an analytical mindset. And always remember that systems are much more than simple sets of code: they are complex parts that require careful attention and understanding.

Do you identify with any of the challenges mentioned? Share your experience in the comments!

## Follow me:

[Web](https://diegomottadev.github.io/)
[Linkedin](https://www.linkedin.com/in/diegoivanmotta/)
[Twitter](https://twitter.com/diegomottadev)
[Threads](https://www.threads.net/@diegomottadev)
[Github](https://github.com/diegomottadev)

_Did you enjoy this type of content? If the answer is yes, forward it to that person who will surely find it helpful. If the answer is no, reply to this email with your constructive feedback._
Best and Simple Real-Time Validation Library Without Needing JavaScript Code
Published: 2024-04-23 18:31:15


**Expected results**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/e3g1kd3ozhbl8b67cjdk.png)

Validating a form in HTML and CSS can be challenging, but it becomes easier with Trivule. Learn by example how to use dynamic validation rules such as `dateBefore`, `dateAfter`, and `dateBetween` (alias `between`) to make date validation interactive and real-time. Learn more in this [article](https://dev.to/claudye/discover-a-powerful-form-validation-library-without-the-need-for-javascript-code-3b2g) or in the [documentation](https://www.trivule.com/docs) of [Trivule](https://www.trivule.com).

### Step 1: HTML Element Configuration

Start by integrating a date field into your HTML form. Add the `data-tr-rules` and `data-tr-messages` attributes to define validation rules and custom error messages.

```html
<div class="form">
  <label class="label">Your date of birth</label>
  <input
    type="date"
    data-tr-rules="required|dateBetween:1990-01-01 00:00,1999-12-31 23:00"
    data-tr-messages="Date of birth is required|You must be born between 1990 and 1999."
    name="birthDay"
  />
  <!-- Location to display error messages, can be any HTML element -->
  <div data-tr-feedback="birthDay"></div>
</div>
```

### Step 2: Including the Trivule Library

Add the Trivule script to your HTML page to enable form validation.

```html
<script src="https://www.trivule.com/js/trivule.js"></script>
```

### Step 3: Trivule Initialization

Create an instance of `TrivuleInput` by specifying the selector of the element to validate (here, a date field) and call the `init()` method to activate validation.

```html
<script>
  const trInput = new TrivuleInput("input[name=birthDay]");
  trInput.init();
</script>
```

### Step 4: Some Validation Rules on Dates

- **`dateBefore:date`**: Validates that the date is before the specified date.
  
- **`dateAfter:date`**: Validates that the date is after the specified date.
  
- **`dateBetween:start,end`** or **`date|between:start,end`**: Validates that the date is between the two specified dates, inclusively.

> Note: The `between` rule must be preceded by the `date` rule so that the `between` rule knows it will compare dates.

### Conclusion

Date validation with Trivule offers a simple yet powerful solution to ensure users input valid dates in your forms. By using rules like `dateBefore`, `dateAfter`, and `dateBetween`, easily customize the validation behavior according to your specific needs. There are several other rules in Trivule; please consult them [here](https://www.trivule.com/docs/rules).
how to run existing vite-react-app?
Published: 2024-04-23 17:44:56


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/seazi1nxcpov3env3is3.png)
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/q48h7h4gzol8yx15zrob.png)

I am not able to run my existing app on dev server. i tried using the general commands , npm run dev , it shows no scripts as "dev" but as you can see in the package.json file ther is dev script present . i also tried removing the packages and installing it again and running but its still not working . 
Please do help and give a solution to this issue.