DEV Community: Tien Ho

How to deploy layer python for aws lambda

Tien Ho — Mon, 02 Sep 2024 11:03:34 +0000

Creating an AWS Lambda Python Layer Using Docker

Here's how you can create a Dockerfile and Docker command to build an AWS Lambda Python layer using the public.ecr.aws/lambda/python:3.11 image.

Step 1: Create the Dockerfile

# Use the official AWS Lambda Python 3.11 image as the base image
FROM public.ecr.aws/lambda/python:3.11

# Set the working directory inside the container
WORKDIR /lambda-layer

# Copy the requirements.txt file (if you have one) into the container
COPY requirements.txt .

# Install the Python packages into the /lambda-layer/python directory
RUN pip install -r requirements.txt -t /lambda-layer/python

# Package the content of the /lambda-layer directory as a zip file
RUN zip -r9 /layer.zip /lambda-layer

# Set the default command to output the layer zip file
CMD ["cat", "/layer.zip"]

Step 2: Build and Run the Docker Container

Build the Docker image:

docker build -t lambda-python-layer .

Run the Docker container and output the layer zip file:

docker run --rm -v $(pwd):/output lambda-python-layer

This command will run the container, generate the layer.zip file inside the container, and then copy it to your current directory.

Step 3: Deploy the Layer to AWS Lambda

Once you have the layer.zip file, you can upload it to AWS Lambda as a new layer:

Go to the AWS Lambda console.
Navigate to the "Layers" section.
Click "Create layer."
Upload the layer.zip file and select the appropriate runtime (Python 3.11).

Profitable Projects Without Direct Sales

Tien Ho — Mon, 02 Sep 2024 10:34:02 +0000

Here are some project ideas that can be profitable without directly involving sales:

1. Ad-Supported Websites or Apps

Idea: Create a website or app that provides valuable content or services, monetized through advertising.
Example: A tech blog, a free-to-use tool like a calculator or a news aggregation app.
Monetization: Use platforms like Google AdSense to display ads and earn revenue based on clicks or impressions.

2. Subscription-Based Content

Idea: Develop a platform or service where users pay for access to premium content or features.
Example: A members-only forum, an online course library, or a premium newsletter.
Monetization: Charge users a recurring subscription fee for ongoing access to content.

3. Affiliate Marketing

Idea: Create content that promotes other companies' products, earning a commission on any sales generated through your referral links.
Example: A blog that reviews tech gadgets, a YouTube channel with product tutorials, or a website with affiliate links.
Monetization: Earn commissions for each sale made through your affiliate links, without directly handling the sales process yourself.

4. Crowdsourced Funding

Idea: Launch a project on crowdfunding platforms like Kickstarter or Patreon, where supporters can contribute funds to help you develop a product or service.
Example: A new open-source software tool, a creative project like a game, or a recurring podcast or video series.
Monetization: Receive ongoing financial support from backers who believe in your project, without needing to sell anything directly.

5. Freemium Model

Idea: Offer a basic version of your software, app, or service for free, with optional premium features or upgrades available for a fee.
Example: A free app with additional features unlocked via a premium subscription, or a free SaaS tool with advanced capabilities for paying users.
Monetization: Generate revenue from users who choose to pay for the premium features, while still offering value to free users.

6. Paid API Access

Idea: Develop an API that provides access to valuable data or services, and charge users based on usage.
Example: A weather data API, a financial data API, or an image processing service.
Monetization: Implement a pay-per-use model or subscription fees for access to the API, where users are charged based on their usage.

7. Open Source Donations and Sponsorships

Idea: Contribute to or maintain an open-source project that attracts significant user interest, and seek donations or sponsorships.
Example: An open-source software library or tool, a popular GitHub project, or a community-driven development effort.
Monetization: Receive financial support from individuals or companies that benefit from your project, through platforms like GitHub Sponsors or Patreon.

8. Monetized Content Platforms

Idea: Create content on platforms like YouTube, Medium, or Twitch, where you earn money through views, ads, or platform-specific revenue-sharing programs.
Example: A YouTube channel with tech tutorials, a blog on Medium covering industry trends, or live coding sessions on Twitch.
Monetization: Earn revenue from ads displayed on your content, viewer donations, or platform-specific partner programs.

9. Licensing

Idea: Develop software, code, or content that others can license for use in their own projects.
Example: A software library or tool that can be integrated into other products, or creative content like music or images that can be licensed for use.
Monetization: Charge licensing fees for businesses or individuals who want to use your work in their own projects.

10. Automated Tools or Bots

Idea: Create a tool, bot, or automation that saves users time or effort, and offer it for free with optional premium features.
Example: A social media scheduling bot, an email automation tool, or a stock trading bot.
Monetization: Offer the basic version for free and charge for advanced features, customization, or higher usage limits.

These projects allow you to generate income without directly selling a product, often relying on alternative revenue models like advertising, subscriptions, or donations.

How to Create a Laravel URL Temporary Signed Route to an External URL

Tien Ho — Fri, 30 Aug 2024 15:25:42 +0000

In Laravel, signed URLs are a powerful way to ensure the integrity of routes by adding a signature that validates the URL. However, Laravel’s native signed routes feature is generally used for internal routes. What if you want to create a temporary signed route that redirects to an external URL? This article will guide you through the process.

Understand Laravel's Signed Routes

Laravel's signed URLs are typically used to generate links that point to a specific route within your application. These URLs carry a unique signature, which Laravel can validate to ensure that the URL has not been tampered with.

use Illuminate\Support\Facades\URL;

URL::temporarySignedRoute('name.route', now()->addMinutes(30), ['parameter' => $value]);

The code snippet above generates a URL that is valid for 30 minutes and includes a signature that ensures its validity.

Create a Signed Route for an External URL

This class is derived from the Illuminate\Routing\UrlGenerator.

<?php

namespace App\Helpers;


use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Config;

use Illuminate\Support\InteractsWithTime;
use Illuminate\Support\Arr;
class CustomSignedUrl
{
    use InteractsWithTime;
    public function customSignedUrl($baseUrl, $parameters = [], $expiration = null, $absolute = true)
    {
        $this->ensureSignedRouteParametersAreNotReserved(
            $parameters = Arr::wrap($parameters)
        );

        if ($expiration) {
            $parameters = $parameters + ['expires' => $this->availableAt($expiration)];
        }

        ksort($parameters);

        $key = env("APP_FRONT_KEY");

        $rt =  $baseUrl ."?expires={$parameters['expires']}";
        $parameters['signature'] =  hash_hmac('sha256', $rt, $key);
        return $baseUrl ."?expires={$parameters['expires']}&signature={$parameters['signature']}";
    }

    /**
     * Ensure the given signed route parameters are not reserved.
     *
     * @param  mixed  $parameters
     * @return void
     */
    protected function ensureSignedRouteParametersAreNotReserved($parameters)
    {
        if (array_key_exists('signature', $parameters)) {
            throw new \Exception(
                '"Signature" is a reserved parameter when generating signed routes. Please rename your route parameter.'
            );
        }

        if (array_key_exists('expires', $parameters)) {
            throw new \Exception(
                '"Expires" is a reserved parameter when generating signed routes. Please rename your route parameter.'
            );
        }
    }
}

Use the Signed External URL

Assume we have two domains: one for the admin side and one for the front page. We want to create a front page user from the admin side and send an email verification.

This's code for custom send verify email.

 <?php

namespace App\Mail;

use App\Helpers\CustomSignedUrl;
use Illuminate\Auth\Notifications\VerifyEmail;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\InteractsWithTime;
class CustomVerifyEmail extends VerifyEmail
{
    use InteractsWithTime;
    protected function verificationUrl($notifiable)
    {
        if (static::$createUrlCallback) {
            return call_user_func(static::$createUrlCallback, $notifiable);
        }

        $sha1 = sha1($notifiable->email);
        $id = $notifiable->getKey();
        $baseUrl = env('APP_FRONT_URL')."app/verify-email/{$id}/{$sha1}";

        $signedUrl = (new CustomSignedUrl())->customSignedUrl($baseUrl, [
                'id' => $id,
                'hash' => $sha1
            ],
            Carbon::now()->addMinutes(Config::get('auth.verification.expire', 60))
        );

        return $signedUrl;

    }
}

Front User model:

...
    public function sendEmailVerificationNotification()
    {
        $this->notify(new CustomVerifyEmail);
    }

Make money ideas for developers

Tien Ho — Tue, 27 Aug 2024 09:59:53 +0000

1. Freelancing

Platforms: Join platforms like Upwork, Fiverr, or Toptal to find freelance projects.
Niche Expertise: Specialize in a high-demand niche such as mobile app development, blockchain, cloud computing (e.g., AWS), or AI/ML.
Consulting: Offer your services as a consultant to help businesses solve technical problems or improve their existing systems.

2. Create and Sell Digital Products

Plugins and Themes: Develop plugins or themes for popular platforms like WordPress, Shopify, or VS Code and sell them on marketplaces like ThemeForest.
Mobile Apps: Build mobile apps for iOS or Android and monetize them through in-app purchases, ads, or subscriptions.
SaaS Products: Create a Software as a Service (SaaS) product that solves a specific problem and charge users a monthly subscription fee.

3. Online Courses and Tutorials

Platforms: Create courses on platforms like Udemy, Coursera, or Teachable.
Niche Topics: Focus on trending topics or emerging technologies such as Python for data science, cloud computing, or blockchain development.
YouTube Channel: Start a YouTube channel and monetize it through ads, sponsorships, and affiliate marketing.

4. Blogging and Content Creation

Technical Blogging: Write in-depth tutorials and articles on platforms like Medium, Dev.to, or your own blog. Monetize through affiliate marketing, sponsored posts, or ads.
Ebooks: Write and sell ebooks on programming languages, frameworks, or best practices in development.

5. Open Source Contributions

Sponsorships: Contribute to popular open-source projects and get sponsored by companies or individuals on platforms like GitHub Sponsors.
Paid Support: Offer paid support, custom development, or consulting services for open-source projects you contribute to or maintain.

6. Build and Sell APIs

API Marketplaces: Develop useful APIs (e.g., for data scraping, payment processing, or machine learning) and sell access through API marketplaces like RapidAPI or directly to businesses.
Custom APIs: Offer custom API development services for businesses that need tailored solutions.

7. Affiliate Marketing

Review Products: Create content reviewing developer tools, software, or hosting services, and include affiliate links.
Tutorials: Integrate affiliate links into tutorials that require specific tools or services (e.g., cloud hosting, development environments).

8. Participate in Bug Bounty Programs

Platforms: Join platforms like HackerOne or Bugcrowd to find and report security vulnerabilities in software and earn rewards.
Skill Development: Focus on cybersecurity and ethical hacking to maximize your potential earnings.

9. Remote Work and Part-Time Jobs

Remote Jobs: Apply for remote developer positions, which offer flexibility and often pay well.
Part-Time Roles: Take on part-time development roles with startups or small businesses that need technical expertise but can’t afford a full-time developer.

10. Develop and Sell IoT Solutions

Custom Hardware: Create custom IoT devices or solutions and sell them to businesses or consumers.
Consulting: Offer consulting services for businesses looking to implement IoT solutions in their operations.

11. Host Workshops and Webinars

Paid Workshops: Host paid online workshops on specific programming languages, frameworks, or tools.
Corporate Training: Offer corporate training sessions for businesses looking to upskill their development teams.

12. Develop Extensions and Add-ons

Browser Extensions: Build and sell browser extensions for Chrome, Firefox, or Edge that solve specific problems.
Software Add-ons: Create add-ons for popular software like Slack, Jira, or Trello and monetize them.

13. Licensing Your Code

Reusable Code: License reusable code, libraries, or frameworks that you’ve developed to other developers or companies.
White-Label Solutions: Create white-label solutions that other companies can rebrand and sell.

14. Crowdfunding

Kickstarter/Indiegogo: Launch a project on crowdfunding platforms to raise money for developing a unique software solution or product.
Patreon: Use Patreon to get recurring support from users who value your content or open-source contributions.

15. Participate in Hackathons

Hackathon Prizes: Compete in hackathons, which often offer cash prizes, job opportunities, or startup funding for winners.
Networking: Use hackathons to network and potentially find investors or partners for your ideas.

Introduction to AWS Lambda

Tien Ho — Fri, 23 Aug 2024 15:47:21 +0000

AWS Lambda is a serverless compute service provided by Amazon Web Services (AWS) that allows you to run code without provisioning or managing servers. Here’s a more detailed explanation:

Key Features of AWS Lambda:

Serverless Architecture:
- AWS Lambda abstracts the underlying infrastructure, so you don't need to worry about server management, scaling, or maintenance. You simply upload your code, and Lambda automatically handles the rest.
Event-Driven Execution:
- Lambda functions are triggered by various AWS services or HTTP requests via Amazon API Gateway. Common triggers include changes in an S3 bucket, updates in a DynamoDB table, or messages in an SQS queue.
Pay-as-You-Go Pricing:
- You only pay for the compute time your code consumes, measured in milliseconds, and the number of requests. There are no charges when your code isn’t running, making it cost-efficient, especially for sporadic workloads.
Automatic Scaling:
- AWS Lambda automatically scales your application by running the code in response to each trigger. Your code runs in parallel, processing each trigger individually, making it highly scalable without any additional configuration.
Supports Multiple Languages:
- Lambda supports several programming languages, including Python, Node.js, Java, C#, Go, and Ruby. You can also bring your own custom runtime.
Integrated with AWS Services:
- Lambda is tightly integrated with many other AWS services like S3, DynamoDB, Kinesis, and CloudWatch, enabling seamless data processing and application development.
Flexible Deployment and Management:
- You can manage and deploy Lambda functions using the AWS Management Console, AWS CLI, or infrastructure-as-code tools like AWS CloudFormation and the Serverless Framework.

Use Cases for AWS Lambda:

Real-time File Processing: Process files as they are uploaded to S3.
REST APIs: Serve backend logic for web and mobile applications using API Gateway and Lambda.
Data Transformation: Transform and stream data in real-time from services like Kinesis.
Automated Tasks: Execute scheduled tasks using CloudWatch Events or automatically respond to system changes.

AWS Lambda is an ideal choice for applications where you need to run short-lived, event-driven tasks without the overhead of managing servers.