241. Providing the Recipe Service Correctly

Jul 22, 2026 00:53 · 1:59 · English · Whisper Turbo · 2 スピーカー

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講義索引

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

The bug we recognized in the last lecture is a pretty mean one.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

If we add a new recipe here,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

we hit save and

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

we go to shopping list and go back,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

you see it's lost,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

it's gone.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

Again,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

test,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

test and gone.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So what's happening here?

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

The issue we encounter here

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

is that we provide our recipes service in

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

the recipes component.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So all the components in this area share the

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

same instance.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

But if we navigate away to the shopping list area,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

the recipes component is destroyed and so is

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

the instance of this service.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So what we need to do to ensure that our service survives

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

is we need to add it to our app module here.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

By adding it here,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

recipes service,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

recipe service,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

and adding the import to,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

we make sure that now we have one instance

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

of the service all the time available as long as our app is running.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So now if we add the spaghetti one

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

more time with our beautiful image,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

very tasty as mentioned before,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

and I hit save.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

Now, if I come back,

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S… Speaker 2 (241. Providing the Recipe Service Correctly)

it's still there.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

And as you can see,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

I can still edit it.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So this is now working.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

Now we can try putting it to the shopping list,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

which of course doesn't add.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

We first of all have to add some ingredients like spaghetti.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

But now this is working as expected.

1:42

S… Speaker 2 (241. Providing the Recipe Service Correctly)

Well,

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S… Speaker 2 (241. Providing the Recipe Service Correctly)

almost.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

With the remaining bug.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

that here,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

once we click this X button,

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

we're not deleting the ingredient.

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S… Speaker 1 (241. Providing the Recipe Service Correctly)

So that is something we should also have a look at.

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