REST API & RESTful Web Services Explained | Web Services Tutorial

In this tutorial we will learn REST API and RESTful web services.

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What is REST API? REST stands for Representational State Transfer and API stands for Application Programming Interface.

Representational - the resource (image, page, video, profile) is represented by the web server to the client in any format like HTML, Image, JSON, XML etc.

State - the state of the application (web site) on a client's computer changes as the client clicks from one link to the next. Ask the client clicks on the link, they request additional resources, and the application "state" changes.

Transfer - the transfer of resources from the web server to the client in a "representational" state which can be read by the client or implemented in the application program by the programmer. The transfer may also refer to the application state transfer as the client browses a web site.

API - application programming interface provides useful methods/functions which a programmer can implement into his own application in a chosen programming language like PHP. The API makes it easy for programmers to implement. It's important to note that the response we get when sending REST API request will usually be in JSON, XML or other format which makes it easy to implement in the code and it's not meant to be read immediately by a human being.
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[onlyvsn]

five years later, still feels like one of the best explanations out there! Thanks dude.

[MCtinRad]

I honestly wish I found this video when I was trying to understand REST API a year ago. Great job explaining it! I feel like this helped me have a better understanding of what the hell I was doing before. Thanks.

[Rackerintraining]

Yes, finally a quality video about REST Web Services. Easy to understand, logically explains the concepts in progression. The best!!!

[arunthomas]

This is the best tutorial I've came across on the topic of REST API. It definitely helped that he started with explaing from a regular HTTP request and then go from there.

[lonzysnow]

Have been following almost all your teaching and you really doing a great .... really like ho w you represent everything in a chart form for easy understanding

[chandraprakashjangid]

Staying so motivated in the evening on the Valentine' Day as to create a REST API youtube video ?! That's really cool !!

[gnosticdude]

BEST-EXPLANATION-EVER! I had been struggling to get to the nuts and bolts of RESTApi and REST Web Services. Your video cleared it all in just 15 mins!

[TrouvatkiDePercusion]

Spectacularly done! This is singularly the one-and-only video I've seen on all of Youtube that actually properly explains what "REST" is that's actually clearly understandable. Thank you so much, man!!

[bhanuj]

The saying goes "If you cant explian with ease and simple enough way, it means you havent understood it well!!!" What an amazing crisp explanation of REST APIs. Keep it up!

[omarb.]

Great tutorial, very clear with easy to understand examples. Thank you so much.

[shageek]

Have been looking for some simple ways to teach people about REST arch and RESTful web services! You made it really simple.

[meranaamarti]

The best explanation on understanding what Restapis are. Thank you so much for all the detailed examples you gave.

[WarriorPocky]

Dude, I've watched other REST API explanation vids. All of them had comments saying "this is the best vid!!! blah blah" and I still do NOT understand what's going on. You, however, helped me to FINALLY, finally understand. Well done, seriously. You've earned yourself another subscriber.

[staj]

I love how concise yet detailed this is, making the technical bits thoroughly practical & understandable! Thanks a lot Sir! Keep up the Great Work!

[kevinmeinrad]

This was the clearest video regarding REST API I watched on Youtube. Thanks for this :)

[TomasAntonio]

simple but clear explanation of REST. Good job!

[CenturionDobrius]

Beautifully explained, both verbally and visually. This is the best introductory lesson considering REST on the Internet.

[denmarkth]

this is by far the best short explanation i could find on youtube for REST API! really nice work!

[barryjones]

Excellent clear explanation, informative and very well presented . I will follow your presentation and recommend them to others

[kingmartinibeatz]

Best explanation ever. This makes RESTFUL API's seem so easy. Thanks.