What are Twitter Card ideal dimension ? 800px by 418px

  • The ideal image size for Twitter Cards is 800px by 418px, a 1.91:1 ratio. For App Cards, you can go with 800px by 800px for a 1:1 ratio.
  • Videos can also be used in Twitter Cards. The recommended size for Website Card videos is 1200px by 1200px, or 1:1 aspect ratioFor App Card and Direct Message Card, the recommended size is 640px by 360px for a 16:9 ratio, or 360px by 360px for a 1:1 ratio.
  • Twitter supports images that are JPEG or PNG format; no GIFs are allowed here.
  • For best results, make sure your image is no larger than 3 MB.
  • The approved file types are MP4 or MOV, ideally less than 30 MB in size, and no more than 1 GB when it comes to videos.
  • Twitter advises a short video for these cards, so aim to keep it less than 15 seconds.
  • For videos, place your logo in the upper left-hand corner.
  • All Website Card videos are required to have closed captioning or text overlays.

source :


How to story point your project ? Fibonacci Sequence

0, 1, 2, 3, 5, 8, 13, 21, 34

This is the Fibonacci Sequence to use when updating your story points

1 – Easy (1-2 days)

2 – Medium (1-2 days)

3 – Hard (3-5 days)

5- Very hard (3-8 days)

8 – Difficult (8-12 days)

13 – Very difficult (8-15 days)

General Technical

How to define latency in computer science ? ?

Latency is the delay between a user’s action and a web application’s response to that action, often referred to in networking terms as the total round trip time it takes for a data packet to travel.

How to reduce latency

Content Delivery Network (CDN) providers provide customers with private networks that allow them to bypass the public internet. Therefore, these private networks reduce latency by providing more efficient paths for data packets to travel on.

Also the caching techniques is resolving the latency issue

How Latency Works

Consider that you are buying a product through an online shop and you press the “Add to Cart” button for a product that you like.

The chain of events that occur when you press that button are as follow :

  1. Firstly, You press the “Add to Cart” button.
  2. Secondly, The browser identifies this as an event and initiates a request to the website’s servers. The clock for latency starts now.
  3. Thirdly, The request travels to the site’s server with all the relevant information.
  4. Then, The site’s server acknowledges the request. The first half of the latency is complete.
  5. The server accept the request status.
  6. The site’s server replies to the request with relevant information.
  7. The request reaches your browser and in the card the system adds the product. With this, the latency cycle is completed.

The latency is the time that it takes for all these events to complete.




What is a Developer Love Dream ?

No more time wasted in configuration => Just develop!

Developers spend considerable time configuring their work environment. This is an exhausting task and it is tiring. Software engineering is Joy when we can develop and think about logic and Speed performance.

Surprise is there to facilitate development for software engineers and myself !

Starting with providing tips about best devices and tools and of course articles and solutions about diverse configuration issues


How to change root password in Digital Ocean ?

Well it may come as a surprise when you figure that you need the root password of your droplet to do advance configuration on your server. Find below How to change the root password of your droplet in Digital Ocean ?


Load Testing / Performance Testing

Tools required in a LAMP stack environment for load testing are Jmeter, Blazemeter


How to find a string in the php.ini or phpinfo() ?

SSH into the machine and simply type the command below :

php -i | grep “your_string”


MACOS – How to reset PATH ?

Default PATH David Raleche


Basic and Essential PATH

export PATH


Google-Fi ! $35/month for 2 people !

Click here to have more info about the google-Fi


HTOP – new Linux Command


This a new Linux command that allow to monitor different processes

htop is an interactive system-monitor process-viewer and process-manager. It is designed as an alternative to the Unix program top. It shows a frequently updated list of the processes running on a computer, normally ordered by the amount of CPU usage.