Stateful vs Stateless Applications (Explained by Example)

If you ever wondered the difference between stateless and stateful applications, REST, horizontal scaling versus vertical scaling? We tackle those in a small example. Hope you guys enjoy this quick video. We explain the advantages and disadvantages of each application.

0:00 Intro
1:14 Stateful Application
8:40 Stateless Application

Checkout the rest of the content for more software engineering topics by example.

🏭 Software Architecture Videos

💾 Database Engineering Videos

🛰 Network Engineering Videos

🏰 Load Balancing and Proxies Videos

🐘 Postgres Videos

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🛡 Web Security Videos

🦠 HTTP Videos

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Stay Awesome
-Hussein Nasser

[nikhilbalwani]

If you were my professor, I would be ready to sit in your lecture for hours. Beautiful explanation

[zencollector]

Even 3 years later this explanation is one of the best on the web. Thanks a bunch mate!

[anonymous.youtuber]

Man am I glad I found someone that really knows how to really explain something. Great video ! 👍🙋‍♀️

[matthewspiteri]

I work full time as a software developer, I stumbled across this while doing some research, and what can I say? you have an amazing character. Well explained :)

[John]

Been programming over a year and never realized the correlation between REST and Stateless. Mind = blown. THANK YOU.

[hnasr]

Check out my udemy Introduction to Database Engineering course

Learn the fundamentals of database systems to understand and build performant backend apps

[vishwaskaupvijayananda]

This video makes a lot of other web app concepts so much more clearer. Thanks a mil!

[hnasr]

Stateful Example: 1:10
Stateless Example: 8:30
Stateless vs Stateful pros and cons: 13:30

[souravskr]

It is worthy of investing 14 minutes of your life. Thanks Hussein

[mollycrime]

nice video! i really appreciate videos like this that talk about real concepts/use cases in a simple way that you can watch on down time. keep at it cause it looks like the videos you're making are really cool!

[subramanian]

Great video Hussein. Thanks for the example.

[shubhambatham]

Sending a long ass token of appreciation all the way from India !! Great & Interesting explanation.Thank you !!

[ruixue]

2:44
4:41 introduction to the problem of stateful application
5:50 problem: impossible to scale up
6:10
6:51 stateful with load balancer
8:36 stateless example
8:52 Alice is using REST, State transfer
11:14 server sends Alice a *token*
11:34 then Alice will send request always with the token

[psstream]

Your explanation is far more better than my college lecturer

[mukulrana]

This is the best explaination on youtube

[aminegh]

Thank you very much for your videos, I dare anyone to watch you explaining a concept whatever the complexity of the concept and not understand it ❤❤❤

[stephaniecrispin]

This is the best tutorial I have ever seen in my life. I'm awed!.

[shreysom]

I am hooked to your videos and as a junior back end developer i am learning a lot seeing things from different perspectives in my job. Thankyou so much

[claushellsing]

I'm on a marathon of your videos man. Awesome content

[potaraju]

I can listen to on any topic you teach, I love your teaching style and voice. I am so glad I came across this channel.