Your app is stored on a server, which you can think of as a powerful computer located somewhere. This server is identified on the internet by its IP address, which is a unique number like '164.92.251.81'. As you can see, IP addresses can be hard to remember, which is where domains come in. 

A domain, such as 'yoursite.com', is a user-friendly way to access your app on the server. Instead of typing in a complex numbers, you simply enter the domain name. It's like saving a phone number in your contacts under a name; you don't need to remember the number because you remember the name.

How to connect domain with server (DNS setup)?

• Log in to the website where you registered your domain (like GoDaddy, Namecheap, etc.).
• Navigate to the section where you can manage your domain.

2. Locate DNS Settings or DNS Management Area

• This area allows you to manage various DNS records for your domain.

3. Change Nameservers (if necessary)

• Nameservers control where your DNS records are managed.
• If your hosting provider gave you specific nameservers, change them in your domain registrar’s panel.
• They look sth like "ns1.digitalocean.com."

4. Add or Edit A Records

• A Record: Stands for "Address Record" and connects your domain to the IP address of your hosting server.
• Find the option to add an A Record and enter the IP address of your hosting server.
• This directs your domain to your web hosting server when someone types your domain into a browser.

5. Setting Up a WWW Record

• Why WWW Record: Some users may type www before your domain (like www.example.com). To ensure your site is accessible with or without www, you need to set up a record for it.
• Typically, this is done with either a CNAME record.
• CNAME Record for WWW: Points www.yourdomain.com to your main domain yourdomain.com.
• A Record for WWW: Points www.yourdomain.com directly to your hosting server’s IP, just like your main domain.

6. Save Changes and Wait for it to work

• After making changes, save them.
• DNS changes require some time, typically up to 48 hours.

7. Test Your Domain

• 1-2 days later, visit your domain in a web browser to ensure it points to your hosting server.

If you're working on a Linux server and need to automate some tasks, cron jobs are your best friend. They are like little robots you can program to do stuff at specific times without you having to lift a finger. Today, let’s talk about how to set them up—it’s easier than you think!

First, you'll need to open up the crontab file where all the magic happens. Just type crontab -e in your terminal, and you'll be prompted to choose a text editor. If you're not into fancy stuff, just go with nano by typing 1 and hitting Enter.

Now, you’re in the editor. Here’s where you’ll write instructions for your little robots. Each instruction is written on a new line, and looks something like this:

0 4 * * * cd /path-to-your-project && php artisan some:command >> /dev/null 2>&1

Breaking it down:

• 0 4 * * * is the schedule. It means “at 4:00 AM every day”. The first two numbers represent the minute and the hour, respectively, and the three asterisks mean “every day of the month, every month, every day of the week”.
• cd /path-to-your-project && php artisan some:command is the task you want to run. In this case, it's a Laravel Artisan command.
• >> /dev/null 2>&1 is a fancy way of saying “don’t send me emails about this task, and discard all output”.

Once you've written your instruction, save the file and exit the editor. Voila! You've just told your server to run a task every day at 4:00 AM. Now, this task will run on time, every time, rain or shine.

To check if your cron jobs are running smoothly, you can peek into the syslog with a simple command: grep CRON /var/log/syslog. This will show you a history of all cron jobs that have run.

And that’s it! Setting up cron jobs is a straightforward way to automate tasks on your server. Whether you're clearing out old data or running daily reports, cron has got you covered. Happy automating!

🤔 Why Should You Care?

You've got your API token and you're ready to rock the API world. But wait! How do you make sure the data you're sending is as secure as Fort Knox? 🏰 Enter the superhero of API security: Request Signatures! 🦸‍♂️

🎯 What's an API Request Signature?

Think of it as a digital handshake 🤝 between you and the server. It's a unique code that not only says, "Hey, it's me!" but also, "This data hasn't been messed with!" 🛡️

🌟 Why It's a Big Deal?

1. 🔐 Authentication: Confirms you're the one knocking on the server's door.
2. 🔍 Data Integrity: Makes sure no one's doodled on your data during its trip to the server.

🛠️ How to Craft One in JavaScript?Step 1: Sort 'em Out

Sort all your request parameters alphabetically.

const params = { adults: 1, children: 0, host: 'example.com' };
const sortedKeys = Object.keys(params).sort();

Step 2: String It Together

Concatenate the sorted values into a single string, separated by colons.

const sortedValues = sortedKeys.map(key => params[key]).join(':');

Step 3: Add Your Secret Sauce

Tack on your API token at the start.

const stringWithToken = `YourAPIToken:${sortedValues}`;

Step 4: Hash It Up

Generate an MD5 hash of this string. You can use a library like crypto-js.

const crypto = require('crypto-js');
const signature = crypto.MD5(stringWithToken).toString();

Step 5: Attach to Your Request 📨

Add this signature to your API request payload.

{
    "signature": "a1b2c3d4e5f6",
    "adults": 1,
    "children": 0,
    "host": "example.com"
}

🎉 Voila! You're Done!

And there you have it! Your API request is now wearing an armor of integrity and authenticity. 🛡️ So go ahead, make that API call with confidence! 🚀

Resources: API Security Best Practices

Starting with Git 🌱

git init

Initializes a new Git repository in your project folder. Creates a new time machine for your code!

Pushing Code to GitHub 📤

git add .

Adds all your changes to a staging area. Stages your changes for commit (turns them green in some editors)

git commit -m "Your message here"

Takes a snapshot of your changes. Saves your changes locally

git push origin main

 Sends your changes to GitHub. Updates the online repository.

Pulling Code from GitHub 📥

git pull origin main

 Downloads and merges changes from GitHub. Updates your local environment with the latest code

Merging Changes from GitHub 🧩

git fetch origin

Downloads changes without merging. Gets the latest code without changing your local files

git merge origin/main

Merges the changes into your local branch. Combines the latest code with your local changes

Ignoring Local Changes and Getting Code from GitHub 🙈

git fetch origin

 Downloads the latest code.

git reset --hard origin/main

 Ignores your local changes and replaces them with the code from GitHub. Wipes local changes and matches the online repository

Saving Local Changes but Merging from GitHub 💾

git stash

 Temporarily saves your local changes. Puts your changes aside

git pull origin main

Downloads and merges the latest code

git stash apply

Brings back your saved local changes. Reapplies your changes on top of the latest code.

Some code editors show uncommitted changes in red, staged changes in green, etc. It's like a traffic light for your code! 🚦

Note: Replace main with your branch name if it's different.

Resources 📚

• Github learning lab
• Git Documentation: The official docs are a great resource.
• GitKraken: Provides a graphical interface for Git.

Building a PHP project with Composer is like having a conductor for a band. The conductor makes sure all the musicians (your code) play together. Here's how it works:

composer init

• What It Does: Starts a new Composer project by creating a composer.json file.
• Files Affected: Creates a new composer.json file with the basic structure and prompts you to define dependencies, requirements, and other settings

composer require

• What It Does: Adds a specific package to your project.
• Files Affected: Writes the package to the composer.json file, installs it, and updates the composer.lock file.

composer update

• What It Does: Updates all packages to the latest versions that match your project's requirements.
• Files Affected: Modifies the composer.lock file but doesn't change the composer.json file

composer install

• What It Does: Installs the packages specified in the composer.lock file.
• Files Affected: Doesn't change the composer.json or composer.lock files; it just ensures that the right packages are installed

composer remove

• What It Does: Removes a specific package from your project.
• Files Affected: Deletes the package from both the composer.json and composer.lock files

composer dump-autoload

• What It Does: Regenerates the autoloader files, so PHP knows where to find your classes.
• Files Affected: Doesn't touch the composer.json or composer.lock files; it just updates the autoloader files in the vendor/composer directory.

Conclusion

Composer is like the conductor of your PHP project, making sure all the parts work together. By understanding these common commands, you can manage your project's dependencies and autoloading with ease. It's a practical tool that helps you write code that's in harmony, without hitting any wrong notes

Resources: Documentation

Ever found yourself lost in the dense forest of your project's directory? Fret not! With tree, you can get a bird's-eye view of all your files and folders, neatly organized and visually appealing. It's like having a map of your code jungle! 🗺️

Getting Started 🏁

If you're on macOS, you might need to install tree first. Just run:

brew install tree

And voila! You're ready to explore.

Basic Usage 🧭

Navigate to your project's directory and simply type:

tree

Boom! You'll see a beautiful tree structure of your entire project. 🎄

Cool Tricks 🎩

• Limit the Depth: Don't want to see everything? Limit the levels with -L:

tree -L 2

• Show Only Directories: Just want the folders? Use -d:

tree -d

• Find Specific Files: Looking for all your PHP files? Use -P:

tree -P '*.php'

Why Use tree? 🤔

It's simple, it's quick, and it gives you a clear overview of your project. Whether you're navigating a new codebase or trying to find that elusive file, tree is your friendly guide. 🧙‍♂️

Conclusion 🎉

Next time you find yourself tangled in the branches of your project, remember tree. It's more than a command; it's a coding companion. Give it a try, and let the tree command bring a little more zen to your coding life. 🌳💻

Happy coding, and may your projects always grow tall and strong! 🌲🌲🌲

P.S. Want to know more? Just type man tree in your terminal, and unleash the full power of this handy tool! 📖

Resource

Ever wondered how to make ChatGPT work with your own data? 🤔 Well, there's a magical tool called LangChain that does just that!

Imagine feeding your personal data into ChatGPT and asking it to retrieve specific information. 📚 It's like having a personal assistant that knows everything about you!

But that's not all! You can also use ChatGPT to summarize your Twitter feeds or even lengthy web articles. Talk about a time-saver!

Think about the possibilities! You could feed it books, diaries, blogs, PDFs, documents, research papers, and old code samples. 📖 Imagine having all that information at your fingertips!

You could even create a calendar document and use ChatGPT to manage and modify your schedule. It's like having your own personal secretary!

But wait, what about privacy? 🕵️‍♀️ Well, if you're concerned about using OpenAI's API, you could use Azure's OpenAI API for sensitive data.

You can also use ChatGPT to write missing code functions and find bugs in your code. It's like having your own personal code reviewer!

And guess what? ChatGPT was even used to analyze and summarize car reviews! Imagine the potential applications!

So, why not give it a try? You might just find that ChatGPT can learn your writing or coding style. Who knows, it might even start writing like you!

So, go ahead, explore the magic of ChatGPT with your own data!

If you're a tech professional looking to make a mark in Europe's burgeoning tech sector, particularly in Poland, then this blog post is for you! Here are the top websites where you can hunt for the best tech job opportunities.

1. LinkedIn

Website: www.linkedin.com

The world's leading professional networking site, LinkedIn, is a fantastic resource for job hunting. Not only can you apply directly to job postings, but you can also use it to network with industry professionals and stay informed about the latest industry trends.

2. Pracuj.pl

Website: www.pracuj.pl

Pracuj.pl is Poland's largest job search portal, with a wide range of job listings across various industries, including the tech sector. It's a great platform for both job seekers and employers, with a wealth of information about the labor market in Poland.

3. Indeed Poland

Website: pl.indeed.com

Indeed is a worldwide employment website and it has a dedicated portal for Poland. They offer job postings from companies in a variety of industries, including the tech industry. You can also upload your CV and let employers find you.

4. No Fluff Jobs

Website: nofluffjobs.com

No Fluff Jobs is a Polish job portal that specializes in IT jobs. They pride themselves on providing clear, concise job offers without any "fluff". If you are looking for transparency in job postings, this is the website for you.

5. Just Join IT

Website: justjoin.it

Just Join IT is another Polish job portal specifically for IT professionals. You can search for jobs by technology, city, experience level, or even by the benefits offered by the company.

6. Eurojobs

Website: www.eurojobs.com

Eurojobs is a pan-European job portal that can be used to find jobs in the tech sector across Europe, including Poland. This platform is useful if you're considering opportunities across various European countries.

Remember, job hunting is a process that involves more than just applying to job postings. Networking, updating your skills, and customizing your application to each job are all important parts of a successful job search. Best of luck with your tech job hunt in Europe and Poland