15- Waiting for the First Task

Jul 04, 2026 01:19 · 2:13 · English · Whisper Turbo · 2 Sprekers

Dit transcript verloopt vandaag. Upgrade voor permanente opslag →

Lezingenindex

0:03

S… Speaker 2 (15- Waiting for the First Task)

Let's say there are two ways to get the current weather in a given city.

0:06

S… Speaker 2 (15- Waiting for the First Task)

Perhaps we have two different remote services,

0:09

S… Speaker 2 (15- Waiting for the First Task)

but sometimes one of these services responds a little bit slower.

0:13

S… Speaker 2 (15- Waiting for the First Task)

So we want to call these services concurrently and as soon as we get a response,

0:17

S… Speaker 2 (15- Waiting for the First Task)

we're going to display it to the user.

0:19

S… Speaker 2 (15- Waiting for the First Task)

Let me show you how to do that.

0:20

S… Speaker 2 (15- Waiting for the First Task)

So I'm going to create two completable futures.

0:23

S… Speaker 2 (15- Waiting for the First Task)

Here's the first one completable future that supply async.

0:28

S… Speaker 2 (15- Waiting for the First Task)

Let's say this is our slow link.

0:31

S… Speaker 1 (15- Waiting for the First Task)

0:32

S… Speaker 2 (15- Waiting for the First Task)

in the body of this lambda,

0:34

S… Speaker 2 (15- Waiting for the First Task)

I'm going to call long task that simulate and

0:38

S… Speaker 2 (15- Waiting for the First Task)

then return 20.

0:39

S… Speaker 2 (15- Waiting for the First Task)

That is the current weather,

0:40

S… Speaker 2 (15- Waiting for the First Task)

let's say in New York City.

0:42

S… Speaker 2 (15- Waiting for the First Task)

Now we create a second task completable

0:46

S… Speaker 2 (15- Waiting for the First Task)

future that supply async.

0:48

S… Speaker 2 (15- Waiting for the First Task)

Now this simulates a fast link.

0:50

S… Speaker 2 (15- Waiting for the First Task)

So here we return 20 immediately.

0:53

S… Speaker 2 (15- Waiting for the First Task)

Now we're going to call both these services concurrently.

0:56

S… Speaker 2 (15- Waiting for the First Task)

And as soon as one of them respond,

0:58

S… Speaker 2 (15- Waiting for the First Task)

we're going to print the result on the terminal.

1:00

S… Speaker 1 (15- Waiting for the First Task)

1:02

S… Speaker 2 (15- Waiting for the First Task)

Here we call completable future dot in the last

1:06

S… Speaker 2 (15- Waiting for the First Task)

video you learned about all of with this we can wait for the completion of all tasks.

1:10

S… Speaker 2 (15- Waiting for the First Task)

We have another method called any of this returns

1:14

S… Speaker 2 (15- Waiting for the First Task)

a new completable future that will complete as soon as one of these

1:18

S… Speaker 2 (15- Waiting for the First Task)

completable futures that we pass here completes.

1:21

S… Speaker 2 (15- Waiting for the First Task)

So just like before we have var arcs here we

1:25

S… Speaker 2 (15- Waiting for the First Task)

can pass any number of completable futures.

1:27

S… Speaker 2 (15- Waiting for the First Task)

I'm going to pass first and second.

1:30

S… Speaker 2 (15- Waiting for the First Task)

This will give us a new completable future.

1:33

S… Speaker 2 (15- Waiting for the First Task)

Let's store it in this variable fastest.

1:37

S… Speaker 2 (15- Waiting for the First Task)

Look at the type of this variable.

1:38

S… Speaker 2 (15- Waiting for the First Task)

It's a completable future of object.

1:41

S… Speaker 1 (15- Waiting for the First Task)

Now,

1:43

S… Speaker 2 (15- Waiting for the First Task)

right after we get the result,

1:45

S… Speaker 2 (15- Waiting for the First Task)

we can call then accept.

1:48

S… Speaker 2 (15- Waiting for the First Task)

We're going to consume the result.

1:50

S… Speaker 2 (15- Waiting for the First Task)

So we get the temperature and print it on a terminal.

1:54

S… Speaker 1 (15- Waiting for the First Task)

Now,

1:57

S… Speaker 2 (15- Waiting for the First Task)

let's reformat our code.

1:59

S… Speaker 2 (15- Waiting for the First Task)

That is better.

2:00

S… Speaker 1 (15- Waiting for the First Task)

So,

2:01

S… Speaker 2 (15- Waiting for the First Task)

run.

2:03

S… Speaker 2 (15- Waiting for the First Task)

See, we got the result immediately.

2:06

S… Speaker 2 (15- Waiting for the First Task)

We didn't have to wait three seconds to get the current weather from our slow service.

Dit transcript werd gegenereerd door AI (automatische spraakherkenning). Kan fouten bevatten..verifieer tegen de oorspronkelijke audio voor kritisch gebruik. AI-beleid

❤️ Hou je van STT.ai? Vertel het je vrienden!

Samenvatting

Klik op Summarize om een AI samenvatting van dit transcript te genereren.

Vraag AI over dit Transcript

Vraag maar iets over dit transcript De AI zal relevante secties en antwoord vinden.

Een andere transcriberen