teleren/devto huggingface dataset:
Unlocking the Power of Blockchain and Smart Contracts: A Developer's Guide
Tags: webdev, blockchain, beginners, smartcontract
Published: 2023-12-15 05:31:52

In the fast-evolving landscape of financial technology, blockchain and smart contracts have emerged as transformative forces, reshaping the way transactions and agreements are executed. This topic delves into the core concepts of blockchain technology and the revolutionary impact of smart contracts, providing developers with a comprehensive guide to harnessing their potential.

- Understanding Blockchain Fundamentals:

Explore the foundational principles of blockchain, its decentralized nature, and the role of consensus algorithms.

Dive into key components like blocks, cryptography, and distributed ledger technology.

- Smart Contracts Unveiled:

Demystify the concept of smart contracts and their role in automating and self-executing contractual agreements.

Discuss the advantages of tamper-resistant, transparent, and decentralized smart contract execution.

- Ethereum and Beyond:

Focus on blockchain platforms like Ethereum that enable the development and deployment of smart contracts.

Explore alternatives and the factors influencing platform choice for different use cases.

- Development Tools and Languages:

Provide an overview of the tools and languages available for developing smart contracts.

Discuss popular languages like Solidity and tools such as Truffle for Ethereum development.

- Smart Contract Security Best Practices:

Address the critical importance of security in smart contract development.

Explore common vulnerabilities and best practices for writing secure and robust smart contracts.

- Real-world Use Cases:

Showcase real-world applications of blockchain and smart contracts across industries.

Highlight successful projects and innovative solutions that leverage these technologies.

- Interoperability and Standards:

Discuss the challenges and solutions related to interoperability between different blockchain networks.

Explore emerging standards and protocols facilitating seamless communication between blockchains.

- Scalability and Performance Optimization:

Examine the scalability challenges associated with blockchain networks and smart contracts.

Discuss strategies and technologies for optimizing performance in large-scale decentralized applications.

- Regulatory Landscape:

Provide insights into the regulatory environment surrounding blockchain and smart contracts.

Discuss compliance considerations and the evolving legal framework for decentralized technologies.

- Community Insights and Collaboration Opportunities:

Foster community engagement by sharing insights, experiences, and challenges faced by developers in the blockchain space.

Explore collaboration opportunities, open-source projects, and forums for knowledge exchange within the developer community.
Laravel 10 OneSignal Web Push Notification
Tags: laravel, laravel10, notifications, php
Published: 2023-12-15 05:30:00

Welcome to the world of Laravel 10 and OneSignal web push notifications! In this guide, we'll show you how to use Laravel 10 to add web push notifications to your website. These notifications are a great way to keep your users informed and engaged with your content.

Let's dive in and see how you can enhance your web presence with this exciting feature.

So, let's see how to set up OneSignal web push notifications in laravel 8, laravel 9, and laravel 10.

> Step 1: Set Up a Laravel Project

If you haven't already, create a new Laravel project or use an existing one.

```
composer create-project --prefer-dist laravel/laravel onesignal-push-notification
``` 

> Step 2: Configure .env file

Now, we will configure the .env file.

```
 DB_CONNECTION=mysql 
 DB_HOST=127.0.0.1 
 DB_PORT=3306 
 DB_DATABASE=database_name
 DB_USERNAME=username
 DB_PASSWORD=password
```

After that, we will configure the Onesignal APP ID and Key.

```
ONE_SIGNAL_APP_ID=XXXX
ONE_SIGNAL_AUTHORIZE=XXXX
ONE_SIGNAL_AUTH_KEY=XXXX
``` 

> Step 3: Install OneSignal Package

Open your terminal and navigate to your Laravel project directory. Install the required OneSignal package to send web push notifications.

```
composer require ladumor/one-signal
```

Publish the config file

Run the following command to publish the config file.

```
php artisan vendor:publish --provider="Ladumor\OneSignal\OneSignalServiceProvider"
``` 

> Step 4: Setup OneSignal with Laravel App

Once you've installed a OneSignal web push notification package in your Laravel app, the next step is to configure your config/app.php file by adding the required service providers and aliases.

Add Provider:

Include the provider in the providers section of your config/app.php. This is necessary, especially if you are using a lower version of Laravel.

```
Ladumor\OneSignal\OneSignalServiceProvider::class,
```

Add Facade:

Add the Facade to your config/app.php into the aliases section.

```
'OneSignal' => \Ladumor\OneSignal\OneSignal::class,
``` 

> Step 5: Send Push Notification

In this step, you'll need to check out this code to initiate the process of sending a push notification in your Laravel app using the OneSignal web push notification feature.

```
use Ladumor\OneSignal\OneSignal;

$fields['include_player_ids'] = ['xxxxxxxx-xxxx-xxx-xxxx-yyyyy']

$message = 'push notification example'

OneSignal::sendPush($fields, $message);
``` 

> Step 6: Run the Laravel Application

Now, run the following command in your terminal to initiate the development server:

```
php artisan serve
```
Server-rendering your UI is expensive!
Tags: server, rendering
Published: 2023-12-30 01:03:43

---
title: "Server-rendering your UI is expensive!"
published: true
date: 2023-12-15 04:40:18 UTC
tags: server, rendering 
canonical_url: https://macarthur.me/posts/expensive-rendering
---

Whenever people are duking it out over where UI should be rendered (server vs. client), compute cost inevitably comes up.

“Rendering UI on the server is costly and wasteful,” client-side rendering advocates say.

I’ve heard that claim a lot, but I’ve not seen much to make me believe it matters. Is server rendering _really_ so jarringly expensive that it’s pummeling your bottom line, or is it a negligible blip?

And more importantly, has that cost been weighed against the benefits to user experience on the other side? Particularly for those with low-end Android phones and a slow network connection in nowhere Alabama?

“It’s expensive” is meaningless without reference and context. My compute cost may jump by $100/month, but I’ll gladly pay if it means my conversion or retention rate explodes due to better front-end performance.

The trade-off might not even come out to be worth it, but that’s gotta be determined with more numbers and fewer axioms.
コミュニティはカリスマがつくるもの? いいえ違います。
Published: 2023-12-15 04:23:30

現在私は、業務の傍ら技術広報として活動したり、社外活動として[AWS Startup Community](https://aws-startup-community.connpass.com/)というコミュニティを運営しています。

今回は、自身がコミュニティ運営を行ってきた中で得られた気づきや知見についてお話ししたいと思います。

## 「カリスマ性」より「運用設計」
自身としてはインフルエンサー的な立ち回りをすることもありますが、コミュニティ運営において重要なのは決してカリスマのような人や有名な人がいることではありません。

確かに、目を引くユーザーコミュニティの多くは影響力のある人が主宰として存在する場合もあります。もちろん、影響力がある方が有利であることには違いないのですが、ぶっちゃけ有名な人が1人で始めたコミュニティというのは、一発屋のような短命に終わるケースが多いように感じます。

長く、成長し続けるコミュニティであるために必要なものは、根幹がしっかりとした「運用設計」ができる人が存在することにあると考えています。

## コミュニティ運営の第一歩は目的の設定
このコミュニティで実現したい未来とは? について夢はでっかく描きます。これがコミュニティの原動力になります。

AWS Startup Communityでは、AWSを利用している スタートアップのためのコミュニティで、「スタートアップ同士の交流や経験の共有」を目的と定め、日本のスタートアップから素晴らしいプロダクトや技術が世の中に出て行くことを応援するためにイベントを企画するといったビジョンを掲げています。**これはコミュニティ立ち上げの最初の頃に設定されました。**

想いや熱量だけではコミュニティは長続きしません。
**目的やビジョンを明確にすることがコミュニティ運営の第一歩**になります。

しかし、最近この思想が自分の中で薄れていたこともあり、イベントの企画が「自分がやりたいこと」にフォーカスされてしまっていました。実際、直近のイベントの反応はいまいち、アンケートの回収率も低く、共感を生むことができなかったと反省。
このままではコミュニティの成長をとめてしまうことになりかねません。今一度初心にかえって目的や存在意義について見つめなおそうと思います。

## コミュニティのルールづくり
人が集まるところでは、お互いに気持ちよく過ごすためのルールづくりが必要になります。

コミュニティ発足時はルールがないことがほとんどかと思いますが、コミュニティの中でもルールは必要です。

ルールがないと、自由だけど平等性・公平性はなく、輪を乱す人が現れることもあります。コミュニティ内の心理的安全性を保つように、必要最低限のルールを設けましょう。

最初はシンプルに、「公序良俗に反する行為を禁止する」「誹謗中傷・ハラスメントはしない」「強引な勧誘をしない」といったような内容でOKです。安全に運営ができるように、参加者にもイベント毎に伝えていくことが大切かなと思います。


## より多くの人に興味を持ってもらうには
過去開催したイベントの中で、特に集客を多く集めたイベントが「大企業からスタートアップへ転職した人」というキャリアに関するものでした。なぜこのイベントが注目されたのかについて考えてみます。

まず、**多くの人に共感されるテーマだったこと**です。
新卒からスタートアップです! という人はなかなかいません。参加者の多くの人は転職経験があるか、スタートアップへの転職を検討している人です。いまはスタートアップにいて転職しないけど経験がある人から見れば「転職あるある」「わかる〜」といった共感が生まれますし、これからスタートアップに転職を考えているという人にとっても「いまこういう悩み抱えてるのわかる」など、幅広い人に対して共感を生むテーマだったことが、多くの人に興味を持ってもらえた要因の一つだと思っています。

次に、**「シンプルさ」**です。
「大企業からスタートアップ」という真逆の職場に「転職した」というシンプルな単語でどんな話が聞けるのかある程度想像がつくものの、もしかして予想外の話が聞けるかも? といった興味をそそる展開が期待できます。
逆に、タイトルやテーマに要素をこれでもか!と盛り込んだものは、わかりにくく頭に残りにくくなります。それでは拡散もしづらく集客も苦戦することになりそうです。

このことから、多くの人に興味を持ってもらうには、「共感」と「シンプルさ」が大切なのではと思っています。


## さいごに
たとえすっごいカリスマであったとしても、コミュニティづくりは1人では挫折すると思います。コミュニティ運営に関わることになったら、共感してくれる仲間を見つけて、長く成長できる運用設計をしていきましょう。

AWS Startup Communityのコアメンバーの皆さんをはじめ、他のAWS Commiunity の方々と一緒にイベント運営などをさせていただく機会がありましたが、本当に優秀な方が多く、いつもチームビルディングやマネジメントといった面での学びが多くて、そんな中に参加させてもらえるのはありがたいなぁと感謝の気持ちでいっぱいです。
May I ask, where is the way?
Published: 2023-12-15 03:47:55

In China, a large number of graduates enter the workforce each year, but the number of available job positions is significantly lower. Due to this imbalance, many employers can easily reduce labor costs, especially in the internet industry. This situation has led to long working hours, becoming a common occurrence, with a six-day workweek and weekends reduced to a single day off. Overtime has become a routine, exemplified by the popular term "996," where employees start at 9 AM and finish at 9 PM.

For most programmers, they are often treated as disposable, hired for a few years and then discarded. When they reach the age of 30, the pressure of working late and overtime gradually leads to fatigue, and there is uncertainty about the future career path. This phenomenon reflects issues in some industries, including long working hours and job instability, raising concerns about the balance between work and life.
How to Create a New Android Studio Project | Beginner's Guide to Your First Android Project
Tags: android, androidstudio, newbie, howto
Published: 2023-12-15 03:23:27


{% embed https://youtu.be/hxfckXIsPc4 %}

Welcome to this beginner-friendly tutorial where you'll learn the essential steps to create a new project in Android Studio. From setting up your development environment to understanding key project configurations, this video will guide you through the process of initiating your Android app development journey. Whether you're a newcomer to Android Studio or looking for a refresher, this tutorial provides the foundational knowledge needed to kickstart your app development projects.

**Step 1: Setting Up Android Studio**
To begin, we'll walk you through the process of downloading and installing Android Studio. You'll learn how to configure your development environment to ensure a smooth start to your Android app development.

**Step 2: Creating a New Project**
In this step, we'll guide you through the process of creating a new Android Studio project. You'll understand the significance of choosing the right project template and configuring options such as package name and save location.

**Step 3: Understanding Project Structure**
Next, we'll explore the structure of a typical Android Studio project. You'll gain insights into the purpose of key directories and files, helping you navigate and understand the organization of your project.

**Step 4: Configuring Your App**
In this step, we'll delve into the configuration of your app, including setting up the app name, selecting a theme, and configuring the launcher icon. You'll understand how these configurations contribute to the overall appearance and functionality of your app.

**Step 5: Exploring the Android Manifest**
We'll take a closer look at the AndroidManifest.xml file, which plays a crucial role in defining your app's essential characteristics. You'll learn how to configure activities, permissions, and other important elements in the manifest.

**Conclusion:**
Congratulations! You've successfully learned how to create a new Android Studio project. This beginner's guide has equipped you with the foundational knowledge needed to start your journey in Android app development. Whether you're building your first app or expanding your skills, understanding the basics is crucial.

If you have any questions or comments, please feel free to leave them below. Don't forget to subscribe to our YouTube channel for more exciting tutorials on Android app development.

Now, with the knowledge gained from this tutorial, you're ready to dive into Android Studio and bring your app ideas to life. Happy coding!

**Build android apps without coding** 
Start for free: https://try.draftbit.com/buildwithoutcode

Feel free to reach out to me with any questions or opportunities at (aahsanaahmed26@gmail.com)
**LinkedIn** (https://www.linkedin.com/in/ahsan-ahmed-39544b246/)
**Facebook** (https://www.facebook.com/profile.php?id=100083917520174).
**YouTube** (https://www.youtube.com/@mobileappdevelopment4343)
**Instagram** (https://www.instagram.com/ahsanahmed_03/)
Developing inventory management software and mobile applications
Tags: webdev, programming, mobile
Published: 2023-12-15 03:15:39

Developing inventory management software and mobile applications

Developing inventory management software and mobile applications can bring many important benefits to businesses. Here are some key benefits of developing these solutions:

## **Inventory Management Software**

Optimize Inventory Management: Software helps automate inventory management, helping businesses reduce errors and optimize inventory tracking.Save Time and Costs: Automating the inventory management process helps save businesses time and resources.Enhanced Performance: Track inventory more effectively, thereby helping to make smarter business decisions, increase efficiency, and optimize operations.Determine Sales Velocity: Analyzing inventory data can help predict demand and sales velocity, thereby optimizing sales and ordering strategies.

>> Read more: [Building inventory management software based on Inventree open source code with Aegona team](https://www.aegona.com/software-development/software-development-based-inventree-open-source)

## **Mobile Application**
Convenience and Easy Access: Mobile applications help employees access the system remotely, more quickly and conveniently, no matter where or when.Improve Customer Interaction: Providing mobile applications for customers can help them easily find product information, place orders and interact with businesses conveniently.Enhance Work Efficiency: Mobile applications can help increase work efficiency, especially when employees need to travel a lot or work in many different locations.Grow Markets and Increase Sales: Providing a convenient shopping experience via mobile apps can help businesses attract new customers and increase sales.

>> Read more: [Team of React native developers build mobile app | Aegona](https://www.aegona.com/software-development/how-hire-react-native-developers-vietnam)

Remember, the success of developing inventory management software and mobile applications depends on designing, implementing, and managing them professionally and appropriately to serve specific business goals. your body.

[Contact us now](https://www.aegona.com/)!
Want to Explain Algorithm in Context When Data Miss Occurence in hirarchical memory system
Published: 2023-12-15 02:43:13

Situation
Data Miss Occurrence in Hierarchical Memory System

Qeustion 
CPU only can access L1 Cache Memory in Hierarchical Memory System, then what is Name that is Device having functionality that is to send Data Move Sinal from Ln to L1 ?

I Guess to Exist Circuit Having Control Unit Funtionality such as Instruction Signaling
First deployed website
Tags: beginners, programming, html, github
Published: 2023-12-15 01:28:13

It's been less than a week since I started the DPI Introduction to software development course and I am growing in confidence for transitioning into the software/Data engineering space from the Information technology industry. Yesterday, I deployed my first website via GitHub using an HTML file.
This is a pretty significant step for me, as I have heard the term "Deployment" thrown around a lot at the tech company I do IT for, but never understood how the engineers fulfill this.

Now that I have gotten a taste for the deployment process, today I begin learning HTML and CCS for the course. I will post an update on how this goes tomorrow. As of now, I have some experience with HTML syntax, but none with CSS.
toSorted() vs sort()
Tags: javascript
Published: 2023-12-15 01:12:21

toSorted() is a recently released method that creates a copy of the existing array and returns a new array. Unlike the sort() function, toSorted() does not alter the original array.

```
//  sort
const array1 = [ { name: "k", age: 12 } ,{ name: "a", age: 14 }, { name: "b", age: 14 }, { name: "c", age: 13 }, { name: "d", age: 13 }, { name: "e", age: 13 }, { name: "f", age: 13 }, { name: "g", age: 13 }, { name: "h", age: 13 }, { name: "i", age: 12 }, { name: "j", age: 12 }, ]

array1.**sort**( (a,b) => a.age - b.age)
console.error(array1)
```

**output**
`[
  { name: 'k', age: 12 },
  { name: 'i', age: 12 },
  { name: 'j', age: 12 },
  { name: 'c', age: 13 },
  { name: 'd', age: 13 },
  { name: 'e', age: 13 },
  { name: 'f', age: 13 },
  { name: 'g', age: 13 },
  { name: 'h', age: 13 },
  { name: 'a', age: 14 },
  { name: 'b', age: 14 }
]`

**toSorted:**
![toSorted](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/iztssawmx7vfdx7i0qee.png)
**output**

![outpur](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9d7d96hkqdsupirejp4a.png)

Here you can see the original array has not been modified.

I will be posting tricks I have been using in my journey.
**So follow me on** [LinkedIn](https://www.linkedin.com/in/mohdahshandanish/).
directive is obsolete, use the "large_client_header_buffers
Tags: nginx, ingress, k3s, kubernetes
Published: 2023-12-15 01:10:38

Hi All,

Recently I have upgraded the k3s version to v1.26.7 and since then i am getting following 502 error when trying to access the web application so please advise what causing this error message. I even tried upgrading the ingress version but still the same problem. Another thing I tried is adding and increasing the following lines in the ingress deployment (deploy.yaml), but they are not reflecting in the running pod config and still showing the default setting for keepalive_requests & large_client_header_buffers , is this is the reason of this problem ?? If yes then please advise how i can make these config changes permanent.

  allow-snippet-annotations: "true"
  large_client_header_buffers: 4 32k;
  keepalive_requests: 20000;

Here is the link to the ingress deployment manifest config, I deployed and tried to change the keepalive_requests & large_client_header_buffers values of the deploy. yaml.

https://github.com/kubernetes/ingress-nginx/blob/controller-v1.9.4/deploy/static/provider/baremetal/deploy.yaml

large_client_header_buffers values of the running pod.

 kubectl exec -ti ingress-nginx-controller-865578f4f4-sp4qd /bin/bash  -n ingress-nginx
ingress-nginx-controller-865578f4f4-sp4qd:/etc/nginx$ cat nginx.conf|grep -i large_client_header_buffers
        large_client_header_buffers     4 8k;



2023/12/06 00:32:03 [warn] 30#30: the "http2_max_field_size" directive is obsolete, use the "large_client_header_buffers" directive instead in /etc/nginx/nginx.conf:143
nginx: [warn] the "http2_max_field_size" directive is obsolete, use the "large_client_header_buffers" directive instead in /etc/nginx/nginx.conf:143
2023/12/06 00:32:03 [warn] 30#30: the "http2_max_header_size" directive is obsolete, use the "large_client_header_buffers" directive instead in /etc/nginx/nginx.conf:144
nginx: [warn] the "http2_max_header_size" directive is obsolete, use the "large_client_header_buffers" directive instead in /etc/nginx/nginx.conf:144
2023/12/06 00:32:03 [warn] 30#30: the "http2_max_requests" directive is obsolete, use the "keepalive_requests" directive instead in /etc/nginx/nginx.conf:145
nginx: [warn] the "http2_max_requests" directive is obsolete, use the "keepalive_requests" directive instead in /etc/nginx/nginx.conf:145
< hello world! />
Tags: beginners, braziliandevs, codenewbie
Published: 2023-12-15 01:05:46

olá! 👋

meu nome é tati e a minha tragetória com a tecnologia é cheia de idas e vindas, sentimentos e emoções, metas e promessas, mas aqui estamos em busca de um recomeço.

a minha história com a programação começa de fato há quatro anos com um curso intensivo de desenvolvimento full stack que me levou a algumas oportunidades como instrutora em diversos projetos, cursos e empresas. esse foi o pontapé em uma jornada incrível onde eu juntei um área que eu estava aprendendo (tecnologia) e uma área que eu sempre amei, mas não tinha nenhuma formação (educação). nos anos em que estive em sala de aula, eu tive a oportunidade de adquirir várias soft skills e também de aprender muitas tecnologias e linguagens de programação que eu nunca tinha tido contato.

como estudante de programação, eu sempre me vi muito aflita sobre o mercado de trabalho, então estar participando da área em uma outra perspectiva (talvez um pouco não tradicional) me ajudou a se manter conectada, mas também distante. isso foi bom em partes, mas hoje quatro anos depois eu ainda me sinto uma pessoa júnior e sem muito conhecimento prático em diversas coisas da área.

como uma criança fruto da sua geração, eu cresci no universo de redes sociais e blogs que a gente precisava aprender html e css para personalizar nossos espaços virtuais. e assim eu me apaixonei por front-end antes mesmo de saber o que era o front-end. mesmo depois dos cursos e das experiências profissionais, eu ainda hoje prefiro criar uma aplicação em react do zero do que criar cinco linhas em java.

no último ano, em uma tentativa de ano sabático para refletir sobre as escolhas de carreira, eu me afastei dos códigos e do mercado; e agora volto com a meta de atualizar alguns estudos e continuar a aprender mais sobre o front-end e expandir o conhecimento do universo do javascript.

esse daqui será mais um espaço de compartilhar os estudos e aprendizados, pois acredito que explicando ou compartilhando esse processo também é uma forma de aprender também. eu também te convido a [conhecer um pouco sobre mim](https://tatialveso.super.site/) e também [alguns projetos que já fiz](https://github.com/tatialveso).

espero que você me acompanhe nessa jornada e dá próxima vez terá café ☕