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- [Narrator] Hi and
welcome back to the course.

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In this video we're going
to be running our API

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and testing it out.

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There are a couple of things
we have to make sure of first.

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The first one, we have to make sure

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to delete the configuration
property of nginx.

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That is the default.

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So if we go and do sudo
rm/etc/nginx/sitesenabled/default.

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You have to make sure to remove
the default configuration

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file for nginx, or else whenever
you try to access your API,

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the first thing it's gonna
do is it's gonna give you

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a 404 not found, because the
default configuration property

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for nginx will be the
first one that gets loaded.

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So make sure to delete the default there.

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Once we've done that,
which I've done already,

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we have to make sure to do sudo systemctl,

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reload nginx.

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And then sudo systemctl restart nginx.

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That will reload the
configuration for nginx

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and then restart nginx.

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Okay, now that we've restarted nginx,

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and make sure to have sudo
systemctl start uwsgi_items_rest

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and make sure to have it started.

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In my case it's already started.

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But make sure to have it started.

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Now that nginx is
running uwsgi is running,

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uwsgi will load our Flask
app, so we don't have

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to start it ourselves,

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and everything should be good to go.

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And Posdres is also running
in the background as well.

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Now okay?

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Let's go over to Postman and give it a go.

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So I'm going to open the
section six collection

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because it's gonna be the same
collection as section six,

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we've not changed anything yet,

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we've used the same API for
Heroku, and Digital Ocean.

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And we're gonna make
sure to go over to the

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environments and change the
URL to be our service URL.

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You can find out the server
URL in Digital Ocean,

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the Digital Ocean console,
sorry the control panel,

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or if you're on a Mac
you'll see it up here,

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sshjose@95 85 15 100.

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So, what I'm gonna do here
is put 95, 85, 15, 100.

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Also make sure that
the protocol being used

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is http, and not https.

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Remove the s if it is there,

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because we have not set
up ssl for our server yet,

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and therefore if we put
https it wouldn't work, so.

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Go ahead.

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And then let's give it a go.

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I'm gonna try to register first of all.

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And it tells me that user name,

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a user with that username already exists

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because I've been playing around with it.

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Let's try to authenticate,
it gives me back a token.

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We can retrieve items
and we can create items

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and so on.

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An error occurred, we can
potentially see the error

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probably has something to do with the,

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oh yeah, the store ID of course.

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Don't know if you guys remember,

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I mentioned earlier on in
the course that Sequel Light

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doesn't enforce foreign key constraints,

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whereas Posdres does.

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But, what we can do is make
sure to create the store

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before we create the item.

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That's what a constraint is.

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In a foreign key constraint,
we're saying that

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this item we're creating here

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is related to the store with ID one,

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but that store doesn't exist.

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So Sequel Light was saying, you know what,

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whatever, I don't care, whereas Posdres

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is a bit more advanced, and it
checks that the store exists.

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So let's create this store first,

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we're gonna post this store there,

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and as you can see that works,

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and now we can go back to posting the item

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with store ID one.

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And that gets created.

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If we then go and get
the store for example,

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remember this is gonna
send a list of stores

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and their items back, now
we get the store name,

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which is test, and the
items which is also test,

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which is not a very good name,

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but nevertheless, that's that there.

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So as you can see, everything works,

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but deploying to your own server

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is not as easy as it
is deploying to Heroku.

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You have to do a lot more stuff.

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You have to set up
Posdress, you have to set up

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nginx, you have to
understand how uwsgi works.

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You have to understand
a bit about permissions,

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and things like that.

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It's not he easiest thing.

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So if you want to develop
a product quickly,

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you want to get it out on
the market ASAP essentially,

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Heroku is a good option.

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You don't have to deal
with any server stuff

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or anything like that.

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However it reaches a
point where Heroku gets

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really expensive really quickly,

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so it's worth considering deploying

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to your own servers once
you have a bit more traffic

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and a bit more of a need for performance.

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However as you grow more and more,

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controlling all these servers does become

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quite time consuming,

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so at that point, you
may consider migrating

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to either something like
Amazon web services,

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or hiring somebody to deal
with these servers for you.

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Many companies have their
infrastructure teams

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and things like that.

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Which do this sort of job as
well as many other things.

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So for development, not
only about programming,

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but also about a lot of
other things related to it.

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So something to keep in mind
as you develop more and more.

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So that's it for this section.

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We've learned how to
deploy to our own server,

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and now we have to look at performance,

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which we're gonna look at using Varnish.

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And we can look at creating
our own final project

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as well, which is gonna
be very interesting.

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So that's it for this section,

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and I'll see you in the very next one.