HATEOAS - Hypermedia as the Engine of Application State

Just came across this term HATEOAS , which some of my team members were using in describing what we did in our previous project wrt to REST.

My Last project was about building an e-commerce platform for one of the largest book publisher and distributor in Latin America.As part of that project we had thought to use the LEVEL-3 for rest communication which is using REST as a hypermedia controls.

You can read about different levels of REST at this Martin Fowler’s Blog .

When we said we wanted to use REST as hypermedia controls , the main idea behind this was to be able to navigate the result of a REST call.

For Example if there is a product catalogue call which looks like

GET /products/123456

So It would return

As you can see that apart from the the properties of the product 123456 it also has a links array.

This links array contains the the link description in rel and the location of that document.

so essentially what i could do is parse the JSON response , and then look for what all things can be done on that product.In this case we have exposed two actions , one for the self and the other to place an order for that product.Then to place an order would be to simple do a post on the the href for rel = “order”

The biggest advantage of this scheme is that , you are not dependent on the uri schemes of API , since every time you are navigating the href , if if the API provider changes the url’s you will not be affected . All you need is an entry point in the API and then you can navigate from there on.

This specifically helps during the development process too , as you can change the routes of the API without worrying about breaking the tests anywhere else .

Comments

Fractals and Mandelbrot Set

While mathematics is in itself quite interesting and forms the basis of any modern day research, be it computational biology, machine learning or building complex structure, it can be quite a challenge to decide where to start. That is why i decided to explore Fractals, thinking of it as a bridge between the nature and science. It brings in some really fascinating concepts which should be good enough for me as a gateway go deeper. Fractals are in simple language never ending patterns which keep on repeating without an end, because fractals are never ending they have an infinite perimeter but finite area. Since the patterns repeats indefinitely but if you draw a circle around the peremeter the area will remain finite. It is like adding 1+0.1+0.01+0.001 and never making 2 This video explains the basic concept really well Fractals are found everywhere nature in Trees, Rivers, Branching patterns, Hurricanes and Galaxies. It tries to bring order and understandin...

It was a great experience to talk to a huge audience in Mumbai and Delhi about how to start your ML journey at Google Cloud Summit ’18 India

Las Vegas

January has been pretty exciting for me since last three years, It marks my annual ritual trip to Las Vegas, this is my third trip this year. Almost all of my trips have been because of work. Since Las Vegas has some of the biggest hotels[1] in the world it has become a natural choice for some of the biggest American companies to host their internal and external conferences. As an example, CES hosts some 200,000 people every year [2]. This year I started my 30-hour flight journey, yes you heard it right I had a 9-hour layover at the London airport. Though it was far from ideal it was not that bad. If you can arrange priority pass [3] card from your credit card company or pay for it. Then you can use the lounge, showers and much more for free. I manage to steal the below picture from a hoarding at the airport. Then after much rest and time pass at the airport terminal, I boarded my next flight to Las Vegas. When I landed McCarran International Airport, the first surprise for me was the...

Suchit Puri

Search This Blog