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So after opening Posman, I will go to import.

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And are two files that need importing, the first one is the collection, the cars, S.P.I, and the

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second one is the environment, and then open them both.

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And men will report that both have been imported.

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You will see here under collections that you will have a new collection.

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It's called the Castle API.

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In addition, under environments, you'll have to localhost the environment.

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Only to select the ogles, because that will add some variables that you will need inside the collection.

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I've started a collection in multiple folders, and the first one is C, are you D, which stands for

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creator iterative update and Delete.

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So the first end point that I have is simply using the basic URL, which in our case is localhost and

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a specific board, then using the car's endpoint.

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If I hit a send button, you will see here in the response part a decent response with a list of cars

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that I have in the database.

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Curse itself is pretty simple.

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It has an I.D., it has a manufacturer model.

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And here it was built pretty, pretty easy initially with another end point, I can add a car to the

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list and you'll see here in the by the request can add another car.

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This will get the new it will be added to the database.

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Going back to get old cars, if I hit this again, we'll see here down now, the list contains an additional

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car.

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This is an entire workflow that has been implemented in the API.

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So you can get all the cars, you can add a new car, you can get a single car if you want to.

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And you can, of course, delete the car as soon as you don't need it anymore.

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And points that are available is one for statistics, for for example, based on what's available in

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the database, this can calculate how many vehicles are there and what's the age, the average age of

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the vehicles.

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Finally, there are some health and points, for example, this end point, which is actuators slash

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health.

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We just say if the service is up, if everything is sort of like running, if the application has been

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stopped, the quick and easy way to check if everything's OK.

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So this is what the application does.

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It just exposes an API, gives Jason responses of practically raw data from the database and allows

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other applications that have not been built yet to use this data to displayed in the nice format.