teleren/devto huggingface dataset:
PostgreSQL: Chapter 01: Database Clusters, Databases and Tables
Tags: apacheage, postgres, database
Published: 2023-06-23 08:32:32

An overview of the logical and physical architecture of a PostgreSQL database cluster is given in Chapter 1 of the PostgreSQL. It addresses the following subjects:


1.1 Database Cluster Logical Structure:

PostgreSQL defines a database cluster as a group of databases controlled by a PostgreSQL server.
a justification for why a PostgreSQL server only manages a single database cluster and runs on a single host.
A database is defined as a grouping of database items, including tables, indexes, sequences, views, and functions.
It should be made clear that databases are logically distinct from one another and that they are also database objects.

1.2 The Database Cluster's Physical Structure

Introducing the base directory, the primary directory of a database cluster that houses files and subdirectories.
explanation of why the environment variable PGDATA is typically specified as the base directory.
Describes a database cluster's structure, including its folders "base," "global," and "pg_wal," as well as its files "PG_VERSION" and "postgresql.conf."
Mention is made of tablespaces, extra data locations beyond the basic directory that PostgreSQL can use.

 1.2.1 A database cluster's design:
The base directory's primary files and subdirectories are listed below, including "PG_VERSION," "pg_hba.conf," "pg_ident.conf," and others.

 1.2.2 Database design:
Why each database is a subdirectory under the base directory and why the database directory names correspond to the corresponding databases object identifiers (OIDs).

 1.2.3 File structure related to tables and indexes:
 A description of how tables and indexes are kept in their 
 respective database directories as separate files.
 An explanation of the term "relfilenode," a variable that 
 controls the data file connected to a table or index.
 Example showing how OIDs, relfilenodes, and data file paths are 
 connected.

 1.2.4 Tablespaces
 Tablespaces are described as additional data areas that are not 
 part of the basic directory.
 a description of the creation of tablespaces under a given 
 directory and how they are connected to the "pg_tblspc" 
 subdirectory.
 An explanation of the tablespace directory structure and how 
 databases and tables can be constructed inside of tablespaces.

1.3 Internal Design of a File with Heap Tables:

An overview of the fixed-length pages that make up a heap table file's internal structure.
Heap tuples (record data), line pointers (pointers to heap tuples), and header data are the three forms of data that make up a table page.
Ship hàng từ Úc về Việt Nam có lâu không?
Published: 2023-06-23 08:17:11

**[Ship hàng từ Úc về Việt Nam có lâu không
](https://vietpost.com.au/news/gui-hang-tu-uc-ve-viet-nam-mat-bao-lau-thi-nhan-duoc)**?.Thời gian là một trong những yếu tố được khá nhiều người quan tâm khi tìm đến và sử dụng khi có nhu cầu vận chuyển hàng từ Úc về Việt Nam. Bởi một số người băn khoăn không biết thời gian gửi hàng mất bao lâu?.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/mau6llzsq8gg07wzi564.jpg)

Thực tế, thời gian ship hàng Úc Việt sẽ có sự thay đổi phụ thuộc vào rất nhiều yếu tố. Trong đó, có thể kể đến một số yếu tố như:

Điều kiện thời tiết, khí hậu khi vận chuyển hàng hóa thuận lợi hay bất lợi.
Thủ tục xuất nhập khẩu hàng hóa có suôn sẻ hay không?.
Trong thời gian vận chuyển có bị ảnh hưởng bởi tình hình dịch bệnh hay không?.
Gói dịch vụ vận chuyển lựa chọn: Chuyển phát nhanh hay chuyển phát tiết kiệm?.
Hình thức vận chuyển lựa chọn: Vận chuyển qua đường biển hay đường hàng không?.
Thông thường, thời gian ship hàng từ Úc về Việt Nam sẽ dao động khoảng 3 – 6 ngày hoặc trung bình là 5 – 7 ngày tùy vào đơn vị vận chuyển.
Nếu bạn gửi hàng vận chuyển qua đường biển có thể mất từ 25 – 30 ngày hoặc lâu hơn. Với hình thức vận chuyển đường hàng không thì thời gian giao hàng sẽ nhanh hơn, khoảng 5 – 7 ngày.

Mọi chi tiết vui lòng liên hệ với Vietpost Logistics theo những thông tin dưới đây:

VietPost Pty Ltd

Hotline (Úc): +61451818366

Hotline (Việt Nam): +84966735678

WhatsApp: +84 96 673 56 78

Email: online@vietpost.com.au

Địa chỉ nhận hàng: Lot. 06 , 14-16 Belmore Road, Punchbowl NSW 2196."
Dịch vụ vận chuyển Úc Việt
Published: 2023-06-23 08:14:29

Tại Vietpost, sứ mệnh của chúng tôi chuyên [DỊCH VỤ VẬN CHUYỂN ÚC VIỆT](https://vietpost.com.au/news/dich-vu-van-chuyen-hang-tu-uc-ve-viet-nam-gia-re-tron-goi) cho khách hàng và chúng tôi tự hào về sự chuyên nghiệp, tận tâm của mình.
Hotline: 0451818366
Facebook: https://www.facebook.com/profile.php?id=100070870419952
Website: https://vietpost.com.au/
Email: online@vietpost.com.au
About.me: https://about.me/hgiang
Vingle: https://www.vingle.net/Vietpost
Plurk: https://www.plurk.com/HoangGiang
Arch Linux problems 1/?
Tags: archlinux, linux, troubleshooting, bash
Published: 2023-06-23 08:06:46

Greetings, I have been using consistently Arch Linux for about a year now, and inconsinstently/distro-hopping for two and a half. I am making this for myself, and I hope you find it useful. Most of the solutions have a source, I will append it at the bottom of this article, also I will be adding more solutions, up to 10 by article.

#### 1. NVM not detected<sup>1</sup>
When NVM is not detected after you installed it from YAY or other AUR package manager, you should source the environment in the terminal or add it to the `.bashrc` file

Solution: `echo 'source /usr/share/nvm/init-nvm.sh' >> ~/.bashrc`


1: Pinned comment on [nvm AUR package site](https://aur.archlinux.org/packages/nvm)
25 MORE Chat GPT Prompts for Web Developers
Tags: chatgpt, ai, webdev, beginners
Published: 2023-06-23 07:46:41

**Introduction:**
In the ever-evolving field of web development, staying updated with the latest trends, tools, and techniques is crucial. Chat GPT, powered by OpenAI, has proven to be an excellent resource for web developers to generate creative ideas, find solutions to problems, and enhance their overall productivity. In this article, we present 25 more Chat GPT prompts specifically tailored for web developers. These prompts will help you explore new concepts, brainstorm solutions, and deepen your understanding of various aspects of web development. Let's dive in!

1. "What are the best practices for optimizing website performance?"
2. "How can I implement responsive web design effectively?"
3. "What are the key steps for improving website accessibility?"
4. "What are some popular front-end frameworks and their advantages?"
5. "How can I secure my web application from common security vulnerabilities?"
6. "What are the emerging trends in user interface (UI) design?"
7. "How can I integrate social media functionality into my website?"
8. "What are the best practices for implementing search engine optimization (SEO)?"
9. "How can I optimize my website for mobile devices?"
10. "What are some effective strategies for reducing website load time?"
11. "How can I implement a content management system (CMS) into my website?"
12. "What are the considerations for designing a user-friendly e-commerce website?"
13. "How can I leverage browser caching to improve website performance?"
14. "What are the essential steps for creating a responsive navigation menu?"
15. "How can I implement a smooth scrolling effect on my website?"
16. "What are the advantages of using a CSS preprocessor?"
17. "How can I improve the conversion rate of my landing page?"
18. "What are the key principles of good typography in web design?"
19. "How can I optimize images for the web without compromising quality?"
20. "What are some effective strategies for handling cross-browser compatibility issues?"
21. "How can I implement a custom error page for my website?"
22. "What are the best practices for organizing and structuring CSS code?"
23. "How can I integrate a third-party JavaScript library into my project?"
24. "What are the essential considerations for designing a mobile-first website?"
25. "How can I use animation and transitions to enhance the user experience?"

**Conclusion:**
As a web developer, leveraging the power of Chat GPT can significantly benefit your work. These 25 Chat GPT prompts provide a wide range of topics to explore, from performance optimization and responsive design to security considerations and user experience enhancements. By using these prompts as a starting point, you can delve deeper into specific areas of web development and expand your knowledge and skills. Remember to experiment, adapt, and stay curious as you navigate the ever-evolving landscape of web development. Happy coding!
New Development Tool for Code Snippets
Tags: programming, codenewbie, security, productivity
Published: 2023-06-23 07:43:58

Hey DEVs!

I work at Pieces, a centralized code snippet manager to streamline your workflow. We’re a midwestern startup that’s working to seamlessly integrate your browser, IDE, and collaboration tools, to save, generate, enrich, reuse and share code. Streamline your entire workflow and boost coding efficiency!

Check us out on [Product Hunt](https://www.producthunt.com/posts/pieces-for-developers) and @ [Pieces.app](https://pieces.app/)!
Use git commit --amend to add new changes to the previous commit i.e., HEAD~{0}
Tags: git, webdev, devjournal, programming
Published: 2023-06-23 07:39:32

Imagine you've just made a commit, feeling confident about the code changes you've implemented. However, upon further inspection, you notice a small adjustment that should have been part of the previous commit. Here's where "git commit --amend" comes to the rescue.

To tackle this situation. First make the required changes in the code and stage it.

Once you've staged the changes, it's time to amend the previous commit. Run the following command:

```
git commit --amend
```
This command opens the default text editor (such as Vim or Nano) with a pre-filled commit message. You can modify the message if necessary. Additionally, the staged changes are automatically incorporated into the previous commit.

Close the text editor after editing the commit message. Now, the new changes and the previous changes are merged into one commit.
ChatGPT-4.0 vs Falcon-40B Life Hacks
Tags: chatgpt, falcon, ai, life
Published: 2023-06-23 07:34:56

## Overview 
This documentation outlines the solution architecture for two conversational bots opening and closing a conversation on life hacks topic with each other. It utilizes AWS resources which include SageMaker, Lambda functions and a DynamoDB and two LLM models, GPT 3.5-Turbo and Falcon-40B. The LLM models are being invoked using a lambda functions which process the input and store outputs to the DynamoDB table. <br>

## Solution Architecture
![Solution Architecture](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/osdekzq1i8dp2hghonl4.png) <br>

## Components 
#### Lambda Function 1: 
- Calls OpenAI’s GPT 3.5-Turbo. 
- Generates questions surrounding life hacks. 
- Takes reply from falcon bot through DynamoDB and generates a new question based on the response. 
- New question generated by the GPT model is stored back in DynamoDB. <br>

#### Lambda Function 2: 
- Calls SageMaker Endpoint where Falcon-40B is deployed. 
- Takes the question generated by GPT 3.5 as input from the DynamoDB and passes it to the Endpoint. 
- Response from the Falcon is stored back in DynamoDB. <br>

#### DynamoDB: 
- Serves as the storage for the conversation History between the two Chatbots 
- Allows easy access for both the lambda functions to store and retrieve data 
- Each record contains ResponseID, BotType, Prompt, and Timestamp. 
- Prompt is the generated response from the bots, and the BotType specifies from which bot it was generated by. <br>

#### GPT-3.5 Turbo: 
GPT-3 is a large language model developed by OpenAI. It is capable of understanding and generation natural language. GPT-3.5 is an improved version that is more powerful and capable model than GPT-3.  

#### Falcon 40B: 
Is an open-source LLM with 40 billion parameters. It is deployed on Sagemaker for an easy access through an endpoint. 

## Conclusion 
The solution architecture described in this documentation enables the seamless integration of Falcon40b and GPT-3.5 models with AWS Lambda functions and DynamoDB to create a conversation. This demonstrates the power of LLM models and the human-like interactions.

## Chat Snippets

![Chat Snippet 1](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/wbcycvpge59mp6kgs0ow.PNG)
![Chat Snippet 2](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8hxuot5052xobwiejvff.PNG)
![Chat Snippet 3](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/5xisj5otu3vksyyggven.PNG)
The Best Way To Use Signals In Angular Apps
Tags: angular, signals, rxjs
Published: 2023-06-23 07:33:39

Since Angular 16, Angular now has experimental support for signals and there is a lot of confusion in the community about whether this is going to replace RxJS or how it should be used in an app in combination with RxJS.

This blog post sheds some light on what I think is the best way to use signals in your Angular apps.

You can read it [here](https://christianlydemann.com/the-best-way-to-use-signals-in-angular-apps/).
Video Interview Platform
Published: 2023-06-23 07:26:51

The best option for firms wishing to conduct Technical and Non-Technical interviews with candidates is our [Video Interview Platform](https://incruiter.com/video-interview-portal) with Inbuilt ATS, InCVid. It not only facilitates live interview contacts, but it also has a real-time feedback system and a live code compiler to evaluate a candidate's coding abilities.
Our fully automated exit interview technology, InCExit, conducts exit interviews using a pool of qualified psychological and behavioural interviewers.
Hire pre-vetted personnel using InCSource
Easy-to-use workforce solution for both long-term and short-term projects using our database of more than 1,000 pre-vetted workers on a single platform.
Regular Expression Denial of Service (ReDoS)
Tags: discuss, node, javascript, security
Published: 2023-06-23 07:15:20

Semver [vulnerabilities](https://security.snyk.io/vuln/SNYK-JS-SEMVER-3247795) again! I do not have the energy to wrestle with the breaking changes it is introducing in my projects. 

How are you dealing with the vulnerability in your applications?
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/130w75whe0e5llwf51qr.png)
UdonSharp - Easy Script for Time Based Operations
Tags: udonsharp, tutorial, gamedev, unity3d
Published: 2023-06-23 07:05:39

<ul>
<li><a href="#script">script</a></li>
<li><a href="#example">example</a></li>
<li><a href="#description">description</a></li>
</ul>

<hr>
<h3 id="script">script</h3>
<br>

```
using UdonSharp;
using UnityEngine;

public class TestTimer : UdonSharpBehaviour
{
    // In this example I just have this hooked up to a light source to make it a slow blinking light
    [SerializeField] private GameObject _lightBulb;

    // A float to enter the desired time
    [SerializeField] private float _delayInSeconds = 10.0f; 
    
    // I serialized this one just so I can watch it in the editor
    [SerializeField] private float _elapsedTime = 0.0f; 


    private void Update()
    {
        // Time.deltaTime is just x seconds from previous frame
        // so we increment the elapsed timer until it's equal to or passed the desired time
        _elapsedTime += Time.deltaTime; 

        if(_elapsedTime >= _delayInSeconds)
        {
            // Perform whatever operation you want here
            _lightBulb.SetActive(!_lightBulb.activeSelf); 
            
            // Reset timer and start over
            _elapsedTime = 0.0f; 
        }
    }
}
```
<hr>
<h3 id="example">here it is in action</h3> 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7npg0a2yip9wr6g39stm.gif)

<hr>
<h3 id="description"> description </h3>

As you may know, <a href="https://github.com/vrchat-community/UdonSharp/tree/master">UdonSharp</a> is a programming language built for VRChat that has basic C#/Unity library support, unfortunately there's a lot more of those libraries that _aren't_ available.

When I did a quick search, all the suggested methods for doing timer based events appeared a little more complex to follow then seemed necessary, which is why I wanted to post this simple script in case anyone is just looking for something easy. 

Thanks for reading!
Which Programming Languages Have You Explored Lately?
Tags: discuss
Published: 2023-06-23 07:00:00

Have you recently delved into any new languages? Share your experiences, thoughts, and discoveries. What are the strengths and weaknesses you've observed? Are there any specific domains or applications where these languages shine? Tell us about it!

Follow the DEVteam for more discussions and online camaraderie!

{% embed [https://dev.to/devteam](https://dev.to/devteam) %}

[Image by pch.vector on Freepik](https://www.freepik.com/author/pch-vector)
Common Interview Question: What's Your Experience with Cloud Computing and Application Deployment?
Tags: discuss, codenewbie, beginners, career
Published: 2023-06-23 07:00:00

Hey fellow coders, here's a question that often pops up in interviews: Have you ever worked with cloud platforms or deployed applications in the cloud? It's a chance for you to showcase your familiarity with cloud computing and discuss its advantages. Whether you've experienced the scalability, cost-effectiveness, collaborative potential, or global accessibility of the cloud, we'd love to hear your insights. 

Experienced devs: perhaps you'd care to share your experiences with cloud computing and application deployment in order to help our newbies out! 

Follow the [CodeNewbie Org](https://dev.to/codenewbieteam) and [#codenewbie](https://dev.to/t/codenewbie) for more discussions and online camaraderie!

*{% embed* https://dev.to/codenewbieteam *%}*
Introduction to BigAnimal
Tags: edb, biganimal, apacheage
Published: 2023-06-23 06:59:13

BigAnimal is a fully managed database-as-a-service (DBaaS) that makes it easy to set up, manage, and scale your PostgreSQL databases. It is designed to be easy to use, even for beginners.

With BigAnimal, you don't have to worry about the underlying infrastructure. You can simply create a database, connect to it, and start using it. BigAnimal takes care of everything else, such as provisioning the servers, managing the storage, and applying security patches.

BigAnimal is available on AWS, Azure, and GCP. This means that you can deploy your databases in the cloud of your choice.

Here are some of the benefits of using EDB BigAnimal:

* **Ease of use:** BigAnimal is designed to be easy to use, even for beginners. You can easily create, manage, and scale your PostgreSQL databases without having to worry about the underlying infrastructure.
* **High availability:** BigAnimal is designed to be highly available, with a 99.995% uptime SLA. This means that your databases will be available even in the event of a hardware failure or network outage.
* **Performance:** BigAnimal is designed to provide high performance, even for demanding workloads. You can scale your databases up or down as needed to meet your performance requirements.
* **Security:** BigAnimal is designed to be secure, with features such as encryption, role-based access control, and auditing.

If you are looking for a fully managed DBaaS that offers high availability, performance, security, and ease of use, then EDB BigAnimal is a good option to consider.

**Here are some of the features of BigAnimal:**

* **High availability:** BigAnimal is designed to be highly available, with a 99.995% uptime SLA. This means that your databases will be available even in the event of a hardware failure or network outage.
* **Performance:** BigAnimal is designed to provide high performance, even for demanding workloads. You can scale your databases up or down as needed to meet your performance requirements.
* **Security:** BigAnimal is designed to be secure, with features such as encryption, role-based access control, and auditing.
* **Ease of use:** BigAnimal is designed to be easy to use, even for beginners. You can easily create, manage, and scale your PostgreSQL databases without having to worry about the underlying infrastructure.
* **Flexibility:** BigAnimal is flexible, so you can deploy it on your own infrastructure or on a cloud provider's infrastructure.
* **Cost-effectiveness:** BigAnimal is cost-effective, so you only pay for the resources you use.

**Here are some of the use cases for BigAnimal:**

* **Web applications:** BigAnimal can be used to power web applications that require high availability and performance.
* **Data warehousing:** BigAnimal can be used to build data warehouses that store large amounts of data.
* **Business intelligence:** BigAnimal can be used to build business intelligence applications that analyze data.
* **Enterprise applications:** BigAnimal can be used to build enterprise applications that require high availability and security.
Developers and resting therapy
Tags: rest, webdev, therapy
Published: 2023-06-23 06:55:04

Stressed out or tired of coding as a developer, many developers have a way of easing stress from long hours of screen time, fixing bugs, resolving conflicts on repos, building new products, and learning a new language to make building easier.

Many found solace in exercise, music, playing games, taking a walk, and talking to loved ones.
However, I have a unique way of easing stress from coding. I take solace in designing and writing. These can be accompanied by music or listening to something edifying.
Such breaks rejuvenate my work when back to building.

Hello Developers! That break may be needed to fix that bug.

Cut yourself some slack.

Does one ever finish working?????