Forem: TOOlover

The AWS Outage on Oct 20, 2025: What Broke, Why It Felt Global, and How Amazon Stabilized It

TOOlover — Tue, 21 Oct 2025 10:08:17 +0000

In the early hours of October 20, 2025 (PDT), AWS began seeing elevated error rates in US-EAST-1 (N. Virginia). Amazon later confirmed two key threads:

a DNS resolution problem for DynamoDB API endpoints in us-east-1 (fully mitigated at 2:24 AM PDT), and
an internal subsystem that monitors the health of Network Load Balancers (NLBs) inside the EC2 internal network that degraded, cascading into service connectivity and launch issues. (About Amazon)

The incident: a clear timeline

12:11 AM PDT (Oct 20) — AWS reports increased error rates for multiple services; investigation points to DNS resolution of DynamoDB API endpoints in us-east-1. (About Amazon)
2:24 AM PDT — Amazon says the underlying DNS issue is fully mitigated, but residual impact continues (notably EC2 instance launches). (About Amazon)
Morning–afternoon (US) — AWS communicates a “root cause” in an internal subsystem monitoring NLB health, affecting connectivity; AWS also throttles new EC2 launches to speed recovery and clear backlogs. (Reuters)
Later in the day — AWS states services are back to normal, while some backlogs continue processing. (Reuters)

Root causes (the short, accurate version)

1) DNS resolution to DynamoDB endpoints (us-east-1) failed

For a window of time, clients couldn’t resolve regional DynamoDB API hostnames in N. Virginia, generating timeouts and errors for apps and AWS services depending on those endpoints. This DNS-specific fault was mitigated at 2:24 AM PDT. (About Amazon)

2) An internal NLB-health monitoring subsystem degraded

As recovery progressed, AWS identified the underlying issue: an internal subsystem that monitors the health of Network Load Balancers on the EC2 internal network. Problems there degraded connectivity and knocked other subsystems (e.g., parts of Lambda), prompting AWS to throttle EC2 instance launches as a mitigation while it restored health. (Reuters)

Why did this feel global if it started in one Region?
Many “global” features and customer architectures implicitly lean on us-east-1 control planes or make cross-region calls. When DNS (a cross-cutting dependency) and regional APIs wobble, effects can surface far from N. Virginia. AWS’ own Fault Isolation Boundaries guidance explains how such control-plane dependencies work and why regional designs matter. (AWS Documentation)

Impact snapshot

Major consumer and enterprise apps—including social, commerce, gaming, media, and even some government services—reported outages or degraded performance while AWS recovered the Region and dependent subsystems. Coverage consistently tied the blast radius to us-east-1 and DynamoDB/DNS symptoms, with Lambda errors and EC2 launch failures during the day. (The Guardian)

How AWS fixed it (mitigations & recovery steps)

Mitigated DNS faults for DynamoDB API in us-east-1 (completed at 2:24 AM PDT). (About Amazon)
Identified the NLB health-monitoring subsystem as the root cause and applied mitigations to restore internal connectivity. (Reuters)
Throttled new EC2 instance launches to reduce load and accelerate stabilization; continued clearing service backlogs as systems healed. (The Guardian)
Communicated recovery status over the day as connectivity and API success rates improved across services (Lambda, SQS, Amazon Connect, etc.). (The Guardian)

What builders should learn (practical takeaways)

Design for regional independence. Keep user journeys working without calling a control plane in us-east-1; make stacks statically stable during incidents. (AWS Documentation)
Prefer regional endpoints & VPC endpoints. Use regional service URLs (e.g., dynamodb.<region>.amazonaws.com\) and Private DNS with VPC endpoints to lower exposure to external DNS issues. (AWS Documentation)
Assume DNS is fallible—add resilience. Multiple resolvers, reasonable TTLs, negative-cache hygiene, jittered retries, and last-good-answer caches can turn DNS from a SPOF into a survivable layer. (AWS docs detail health-check behavior and routing on NLBs.) (AWS Documentation)
Avoid hidden single-Region anchors. AWS’ Fault Isolation Boundaries papers enumerate which “global” features depend on us-east-1; don’t put these in your recovery path. (AWS Documentation)

Closing

This incident had two intertwined threads—DNS resolution for DynamoDB endpoints and a degraded internal NLB-monitoring subsystem—that together produced global-feeling impact from a regional fault. Amazon mitigated DNS early, then stabilized internal networking and capacity by throttling EC2 launches and clearing backlogs as services recovered. (About Amazon)

If you share your regions and AWS services, I can tailor a resilience checklist (DNS patterns, endpoint strategy, failover drills) mapped to your stack.

🔥 Top 15 Best AI Coding Agents You Should Try at Least Once

TOOlover — Sun, 01 Jun 2025 11:19:29 +0000

In 2025, AI coding agents are revolutionizing software development by enhancing productivity, reducing errors, and accelerating project timelines. Whether you're a beginner or an experienced developer, these tools offer valuable assistance across various aspects of coding. Here’s a curated list of 15 standout AI coding agents worth exploring:

1. Qodo

An AI-powered code quality platform that provides smart code analysis, precise suggestions, and automated test generation. Qodo supports multiple languages and integrates seamlessly with popular IDEs like VSCode and JetBrains.

2. Lovable AI

Transforms natural language descriptions into fully functional web applications. Lovable AI offers rapid development, iterative enhancement through conversational interfaces, and one-click deployment.

3. v0

A generative chat interface knowledgeable in modern web technologies. v0 can generate UI components, write and execute code in JavaScript and Python, and create diagrams to explain complex programming topics.

4. Devin AI

An autonomous AI software engineer capable of coding, debugging, planning, and problem-solving. Devin AI can independently build applications, fix bugs, and optimize code, making it a powerful tool for complex projects.

5. GitHub Copilot

Developed by GitHub and OpenAI, Copilot provides context-aware code completions and suggestions directly within your IDE, supporting multiple programming languages.

6. Magic Patterns

Assists developers in creating design patterns and reusable code structures by analyzing existing codebases and suggesting optimal patterns, promoting best practices

7. Windsurf

An AI-driven code optimization tool that identifies potential bottlenecks and suggests improvements to enhance code performance without altering functionality.

8. Uizard AI

Revolutionizes UI/UX design by converting hand-drawn sketches into functional code, accelerating the prototyping phase and enabling quick iterations.

9. Replit Agent

Offers an integrated development environment powered by AI, providing real-time code assistance, debugging tools, and collaborative features for solo or team projects.

10. Galileo AI

Focuses on automating code reviews and ensuring adherence to coding standards by scanning codebases for potential issues and providing actionable feedback.

11. Warp

An AI-powered terminal that enhances the command-line experience by offering features like command suggestions, real-time feedback, and script generation.

12. Cursor

An AI-driven coding assistant designed to help developers write, debug, and optimize code efficiently, with features like AI-powered autocompletion and advanced debugging capabilities

13. DocuWriter.ai

Automates the process of generating detailed and accurate documentation for software projects, supporting multiple languages.

14. TabNine

Offers AI-powered code completion for multiple languages, significantly speeding up the coding process with context-aware suggestions.

15. Sourcery

An AI-powered tool that automatically refactors Python code to make it more efficient, readable, and maintainable, integrating easily with popular IDEs

These AI coding agents offer a range of functionalities to enhance your development workflow. Exploring these tools can lead to increased efficiency, better code quality, and a more streamlined development process.

Meta's Threads Client for Ruby

TOOlover — Wed, 12 Jul 2023 14:54:34 +0000

In today's digital landscape, social media platforms have become integral to our personal and professional lives. Meta's Threads, a popular social media platform, provides users with a powerful means of communication and sharing content. To enhance the development experience for Ruby developers, we are thrilled to introduce Threads Client Ruby, a comprehensive library that simplifies the process of creating engaging posts with text, images, links, and replies on Meta's Threads.

🚀 Public repo: Threads Client Ruby

📌 Key Features and Benefits:

✅ Text Threads
✅ Threads with Image
✅ Threads with Link Attachment
✅ Get Post Id From URL
✅ Reply to Other Threads
✅ Like/Unlike a Thread
✅ Follow/Unfollow a User
✅ Delete a Post

Getting Started:

To start leveraging the power of Threads Client Ruby for creating captivating posts on Meta's Threads, follow these simple steps:

Install the Gem: Install the gem by executing the following command in your Ruby environment: gem install threads_client.

gem install threads_client_ruby

Usage:

🌀 Config Threads

Using username and password (first time)

credentials = {
  username: "Instagram's username",
  password: "Instagram's password"
}

ThreadsClientRuby.config do |config|
  config.credentials = credentials
end

Using usertoken and userid (get from here)

credentials = {
  usertoken: "token received after login successfull",
  userid: "Instagram's user id"
}

ThreadsClientRuby.config do |config|
  config.credentials = credentials
end

💡 TIP: Using usertoken and userid to avoid Theard rate limit and decrease response time.

🤖 Get usertoken and userid

  userinfo = ThreadsClientRuby.get_userinfo
  # {
  #   :usertoken=> "eyJkc191c2VyX2lkIjoiNTgzOTIyMTY....",
  #   :userid=>"583922..."
  # }

✨ Text Threads

ThreadsClientRuby.publish(text: 'Hello World!')

✨ Threads with Image

# Online image path
ThreadsClientRuby.publish(text: 'Hello World!', image: 'https://fastly.picsum.photos/id/654/536/354.jpg?hmac=Nqd_oi3EIiPJBAVPYhIUjaEvKpRqLjhtTHkxPmjjo7M')

# Or with local image path
ThreadsClientRuby.publish(text: 'Hello World!', image: '/Users/local-path/logo.jpg')

✨ Threads with Link Attachment

ThreadsClientRuby.publish(url: 'https://github.com/dereknguyen269/threads_client_ruby')

✨ Get Post Id From URL

post_id = ThreadsClientRuby.get_post_id('https://www.threads.net/t/CugF-EjhQ3r')
# => 3143538795635609067

✨ Reply to Other Threads

ThreadsClientRuby.publish(reply_id: post_id, text: "Reply to #{post_id}")

Conclusion:

Threads Client Ruby provides Ruby developers with a seamless and efficient solution for creating engaging posts on Meta's Threads. With support for text, images, links, and replies, this gem empowers developers to build innovative social media tools, automate posting processes, and enhance user experiences on the platform. Unlock the potential of Meta's Threads and captivate your audience with captivating posts using Threads Client Ruby today.

Introducing Muerta Toolbox: The Ultimate Developer's Toolkit!

TOOlover — Wed, 22 Mar 2023 02:12:22 +0000

Hi everyone,

Are you tired of manually converting Excel files to JSON format? Are you looking for a tool that can help you work with multiple worksheets tab and customize JSON? Look no further than Muerta Toolbox!

Muerta Toolbox is an online website that offers a wide range of tools for developers. With Muerta Toolbox, you can easily convert Excel files to JSON format, work with multiple worksheets tab, and customize JSON according to your needs. Plus, you can download your JSON files with just a few clicks.

But that's not all! Muerta Toolbox also includes other useful features such as base64 encoding and decoding, text diff checker, and generate curl. Whether you're a seasoned developer or just starting out, Muerta Toolbox has everything you need to streamline your workflow and boost your productivity.

And the best part? Muerta Toolbox is constantly being updated and improved, with new features and improvements added every day. So why wait? Head over to Muerta Toolbox today and see how it can transform the way you work!

We hope you find this introduction helpful, and we can't wait to hear your feedback on Muerta Toolbox. If you have any questions or comments, please feel free to reach out to us.
Muerta-Toolbox-report-issues
Thank you!

Programing Best Practices For Good Developer

TOOlover — Mon, 13 Jul 2020 03:15:11 +0000

The list below isn't meant to be exclusive, it's more so a collection of links that have helped me out along the way (and can hopefully help you). As you'll see, I've focused on Web Development such as Ruby, Rails, Javascript. There is also a wealth of information on interview prep and applying to jobs.

With the list below, I hope I can help developers improve their skills and rise up in their career path.

Always updating on Github

Start Here
HTML Best Practices
CSS Best Practices
SASS Best Practices
JavaScript Best Practices
NodeJS Best Practices
ReactJS Best Practices
Angular Best Practices
ReactNative Best Practices
PHP Best Practices
Ruby Best Practices
Rails Best Practices
Laravel Best Practices
Swift Best Practices
Objective-C Best Practices
Java Best Practices
Kotlin Best Practices
GO Best Practices
Rust Best Practices
Elixir Best Practices
Scala Best Practices
TypeScript best practices
Flutter best practices
Vue best practices
C best practices
Python best practices

Start Here

Hello! I created this list and am constantly updating it with new resources, information, and news. If you want to stay updated on the newest trends, tutorials, and articles in the Web Development world, please feel free to submit a PR!

HTML Best Practices

HTML Best Practices - @hail2u
HTML5 (and Some CSS) Best Practice - Paulo Augusto Kunzel
Frontend Guidelines - @bendc
Google HTML Style Guide - @google

CSS Best Practices

Airbnb CSS / Sass Styleguide - @airbnb
Dropbox (S)CSS Style Guide - @dropbox
CSS Coding Standards and Best Practices - @stevekwan
Google CSS Style Guide - @google

SASS Best Practices

Sass Coding Guidelines - @bigcommerce
Sass-Guidlines - @blackfalcon

JavaScript Best Practices

Airbnb JavaScript Style Guide() - @airbnb
es6-cheatsheet - @DrkSephy
Common JavaScript "Gotchas" - @stevekwan
Pragmatic Standards: JavaScript Coding Standards and Best Practices - @stevekwan
JavaScript规范 - @adamlu
Google JavaScript Style Guide - @google

NodeJS Best Practices

ReactJS Best Practices

React Design Patterns and Best Practices - @MicheleBertoli
React Style Guide - @coderjonny
Advanced ReactJS Patterns - @kentcdodds

Angular Best Practices

Angularjs style guide - @mgechev
Angular 2 Style Guide - @mgechev
Angular.js: Advanced Design Patterns and Best Practices - @trochette

ReactNative Best Practices

React-Native Guide - @reactnativecn

PHP Best Practices

Ruby Best Practices

Rails Best Practices

The Rails Style Guide - @bbatsov
rails_best_practices - @flyerhzm
The RSpec Style Guide - @reachlocal
Rspec Best Practices - @abinoda
Rails Database Best Practices - Christian Nelson
Active Record Query Optimization Tips - Steven Li
ActiveRecord: How to Speed Up Your SQL Queries - Stefan

Laravel Best Practices

Laravel: The Right Way - @laraveltherightway
Laravel: The Right Way (Best Practices) - @uonick

Swift Best Practices

Swift Style Guide - @eure
Design Patterns implemented in Swift 3.0 - @ochococo
Swift Style Guide - @raywenderlich

Objective-C Best Practices

NYTimes Objective-C Style Guide - @NYTimes
raywenderlich.com Objective-C style guide - @raywenderlich
Style guide & coding conventions for Objective-C projects - @github
Code Style & Best Practise for Objective-C - @wangshengjia

Java Best Practices

Java Best Practices - @in28minutes
Selenium-best-practices - @previousdeveloper
raywenderlich.com Java Style Guide - @raywenderlich

Kotlin Best Practices

Best practices in kotlin - @JackyAndroid
kotlin-style-guide - @yole
raywenderlich.com Kotlin Style Guide (in progress) - @raywenderlich

GO Best Practices

Go Best Practices - @mehrdadrad
Go Style Guide - @AgtLucas

Rust Best Practices

Rust Style Guide - @ubsan

Elixir Best Practices

The Elixir Style Guide - @christopheradams
Elixir Style Guide - @lexmag
Credo's Elixir Style Guide - @rrrene
10 Killer Elixir Tips #1
10 Killer Elixir Tips #2
10 Killer Elixir Tips #3

Scala Best Practices

Scala Best Practices - @alexandru
Databricks Scala Guide - @databricks

Typescript Best Practices

TypeScript Best Practices - @BestCoderDotInfo

Flutter Best Practices

Performance best practices
Flutter: Best Practices and Tips - Kinjal Dhamat
Flutter Development Best Practices - Derrick Mwiti

Vue best practices

C Best Practices

Python best practices

[Beginner] How to build Youtube video crawler web application with Rails 6, Devise, Nokogiri and Bootstrap 4?

TOOlover — Tue, 30 Jun 2020 03:02:15 +0000

In this tutorial, you will get a Funny Youtube Videos web application with Ruby on Rails up and running on your local server and will push your work into Github. How to make it alive? If you are casually browsing and are maybe interested in doing a Ruby on Rails tutorial, stop what you are doing RIGHT NOW and give this podcast a listen! It will give you the fuel you need to continue down the web developer path; it definitely fueled me.

Reading and executing tutorials is an amazing way to learn, so roll up your sleeves, take a slug of coffee, and let’s dive in! This tutorial assumes you have Ruby on Rails installed and all other pre-requisites, like github and a text editor and such.

I have put my github of tutorial at the end of the article.

1. Design our web application

Here, I have been design our app with 2 main layouts:

List youtubes videos
Share youtube video url

Not signed in page

Singed in page
Share youtube video page

2. Building our web application

2.1 Setup Rails

As most Ruby on Rails fans might be aware, Rails 6 is coming soon, and bringing a number of eagerly awaited features and changes. For starters, remember that Rails 6 requires Ruby 2.5+ . So, make sure you have a plan to upgrade your systems accordingly, in case you have not done so already.

We will use Postgres for our project. So let write:

rails new funny-youtube-videos --database=postgresql

A whole bunch of cool stuff happens in the terminal:

And wait amoment until it run out. Then:

cd funny-youtube-videos
rails s

Now, navigate to localhost/3000 to make sure everything is working:

Yay! You’re on Rails!

Next, we will use Devise gem for authentication. If you don't know Devise, please go to https://github.com/plataformatec/devise, and read. This gem is very helpful,it help you save a lot time with how to control authentication for web application.

Add the following line to your Gemfile:

gem 'devise'

Then run bundle install

Next, you need to run the generator:

$ rails generate devise:install

In our application, User is model contains user's information. Next, we will setup devise with User:

 rails generate devise User

Then runrails db:migrate

Now, check our folder models and db/schema.rb we got User table with: email, password, etc... Restart application server again.

Next step, we need table to storage youtube video shared by users. So we will create Post model with fields under:

Id : integer
Title: string
Share Url: string
Description: text
User Id : who share youtube video

That's Ok! We run rails g model Post title:string share_url:string description:text user:references . We got migrate file look likes:

class CreatePosts < ActiveRecord::Migration[6.0]
  def change
    create_table :posts do |t|
      t.string :share_url, null: false
      t.string :title
      t.text :description
      t.references :user, null: false, foreign_key: true

      t.timestamps
    end
  end
end

2.2 Building controllers, views.

In our application, we need PostsController & UsersController. Open our config/routes.rb and adding bellow:

Rails.application.routes.draw do
  root 'posts#index'

  resources :posts
  devise_for :users

  post 'access' => 'users#access', as: :create_session
  get 'share' => 'posts#new', as: :share_movie
end

In our UsersController we will control session with Devise. Help anonymous can sign up & sign in our application. At access , when anonymous enter correct their & password match with our users, it will create session and they signed in successfully. Opposite, it will create new user with email & password, then signed in.

def access
    if valid_user_params?
      user = User.find_for_authentication(email: user_params[:email])
      valid_auth = user && user&.valid_password?(user_params[:password])
      user = User.create(user_params) unless valid_auth
    end
    if user
      sign_in(user)
      flash[:success] = "You have been access successfully!"
    else
      flash[:error] = "Invalid email or password. Please try again!"
    end
    redirect_to root_path
  end

At PostsController we have

a. index list youtube videos

@posts = Post.order(id: :desc)

We will pagination for our list with gem will_paginate. Add our Gemfile gem 'will_paginate', '~> 3.1.0' then bundle install. Now:

@posts = Post.order(id: :desc).paginate(page: params[:page], per_page: 10)

b. create post when cuser submit their youtube url at share page. I have been write script help we can get youtube video information such as: title, description. I use nokogiri to do it. nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. We can use it to crawling websites, ... etc.

I write my script in a service object app/services/post_service.rb

require 'nokogiri'
require 'open-uri'
class PostService
  def initialize(current_user, params)
    @params = params
    @current_user = current_user
  end

  def create
    post = Post.new(@params)
    post.user = @current_user
    if valid_share_url?
      doc = get_doc(@params[:share_url]) if @params[:share_url].present?
      post.title = doc.css('title')&.first&.content&.strip
      post.description = doc.search('#watch-description-text')&.first&.content
    else
      post.errors.add(:share_url, 'Invalid Youtube url')
    end
    post
  end

  private

  def valid_share_url?
    @params[:share_url].match(/^(?:https?:\/\/)?(?:www\.)?youtu(?:\.be|be\.com)\/(?:watch\?v=)?([\w-]{10,})/).present?
  end

  def get_doc(path)
        user_agent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.854.0 Safari/535.2"
        Nokogiri::HTML.parse(open(path, {'User-Agent' => user_agent}), nil, 'UTF-8')
    end
end

So, now our create of PostsController will look like:

@post = PostService.new(current_user, post_params).create
respond_to do |format|
    if @post.errors.blank? && @post.save
        format.html { redirect_to root_url, notice: 'Your moive was successfully shared. Thank you!' }
        format.json { render :show, status: :created, location: @post }
    else
        flash[:error] = @post.errors.full_messages.first
        format.html { render :new }
        format.json { render json: @post.errors, status: :unprocessable_entity }
    end
end

That's all logic. Now we need implement our web site with front end. We will use Bootstrap for front end. It too easy to use. I have been use slim to write html.

In views/layouts/application.html.slim

doctype html
html
  head
    meta content=("text/html; charset=UTF-8") http-equiv="Content-Type" /
    title Funny Movies Site
    = csrf_meta_tags
    = csp_meta_tag
    = stylesheet_pack_tag 'application', media: 'all', 'data-turbolinks-track': 'reload'
    = javascript_pack_tag 'application', 'data-turbolinks-track': 'reload'
  body
    = render 'shared/nav'
    .container
      = yield
      = render 'shared/footer'

In views/shared/_nav.html.slim

.d-flex.flex-column.flex-md-row.align-items-center.p-3.px-md-4.mb-3.bg-white.border-bottom.box-shadow
  .col-sm-5
    = link_to root_path do
      h3.font-weight-normal Funny Movies Site
  .col-sm-7 style="display: flex; justify-content: flex-end;"
    - if current_user
      button.btn-light Welcome #{current_user.email}
      | &nbsp;  
      = link_to "Share a movie", share_movie_path, class: 'btn btn-success', role: "button"
      | &nbsp;
      = link_to "Logout", destroy_user_session_path, method: :delete, class: 'btn btn-danger', role: "button"
    - else
      = form_for :user, method: :post, url: create_session_path, html: { class: 'form-inline' } do |f|
        .form-group.mb-2
          = f.email_field :email, class: 'form-control', placeholder: 'email'
        .form-group.mx-sm-3.mb-2
          = f.password_field :password, class: 'form-control', placeholder: 'password'
        = f.submit 'Login / Register', class: 'btn btn-primary mb-2'

In home page, also index of PostsController.

views/posts/index.html.slim

.container
  - if @posts.empty?
    h5 No movies
  - @posts.each do |post|
    .card.mb-3
      .row.no-gutters
        .col-md-6
          iframe width="420" height="315" src=(post.share_url.gsub('watch?v=', 'embed/'))
        .col-md-6
          .card-body
            h5.card-title #{post.title&.gsub('- YouTube', '')}
            p.share Share by: #{post.user.email}
            p Description:
            p.card-text #{post.description&.truncate(250)}

  = will_paginate @posts

In share a youtube page.
views/posts/new.html.slim

.card style=("width: 40rem;margin: auto") 
  .card-header.text-center
    h5 Share a Youtube movie
  .card-body
    = render 'form'

And views/posts/_form.html.slim

= form_for @post do |f|
  .form-group.row
    .col-sm-2
      = f.label :share_url, class: 'col-form-label'
    .col-sm-10
      = f.text_field :share_url, class: 'form-control', required: true
  .form-group.row
    .col-sm-2
    .col-sm-10
      = f.submit 'Submit', class: 'btn btn-primary btn-lg btn-block'

2.3 Make it alive!

I recommend guys using Heroku for hostingRails application. Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud. Register now!

This artice will help you deploy our website to Heroku.

Our website alive now: https://funny-movies-site.herokuapp.com

We have awesome funny youtube videos with Rails 6.

Conclusion

In this tutorial, we can build Sharing Youtube Videos with Rails 6 and gems: Devise, nokogiri, will_paginate and Bootstrap 4. Learn how about crawling website. And deploy our website to heroku. Make it alive!

Github Funny youtube videos

How To Check URL Is Working Or Not In Programing Languages?

TOOlover — Wed, 24 Jun 2020 13:24:25 +0000

Ruby

require 'net/http'
require 'open-uri'

def working_url?(url_str)
  url = URI.parse(url_str)
  Net::HTTP.start(url.host, url.port) do |http|
    http.head(url.request_uri).code == '200'
  end
rescue
  false
end

PHP

$url = "http://www.domain.com/demo.jpg";
$headers = @get_headers($url);
if(strpos($headers[0],'404') === false)
{
  echo "URL Exists";
}
else
{
  echo "URL Not Exists";
}

Python

from urllib2 import urlopen
code = urlopen("https://kipalog.com").code
if code == 200:
   print "Exists!"


# Or

import urllib2
ret = urllib2.urlopen('https://kipalog.com')
if ret.code == 200:
    print "Exists!"

Shell

#!/bin/bash

http_code=$(curl -I -s -o /dev/null -w "%{http_code}" "https://kipalog.com/")

if [ "$http_code" == "200" ]; then
  echo "Exist!!!"
fi

CURL

$url = "http://www.domain.com/demo.jpg";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_NOBODY, true);
$result = curl_exec($curl);
if ($result !== false)
{
  $statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  if ($statusCode == 404)
  {
    echo "URL Not Exists"
  }
  else
  {
     echo "URL Exists";
  }
}
else
{
  echo "URL not Exists";
}