16- Handling timeouts

Jul 04, 2026 01:21 · 2:24 · English · Whisper Turbo · 2 Puheenvuorot

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Luennon hakemisto

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S… Speaker 2 (16- Handling timeouts)

When calling a remote service,

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you want to have a limit in terms of how long we're willing to wait to get a response.

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We don't want to wait forever.

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So let me show you how to implement this scenario.

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I'm going to create a completable future.

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Supply async.

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Now,

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here we want to simulate a slow connection.

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So long task that simulate.

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Eventually we expect to get a result like one.

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It doesn't really matter what the result is.

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So this returns a completable future.

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Now,

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this future object has a method called or timeout.

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And with this,

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we can enforce a limit.

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Here we need to pass two arguments.

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One is a timeout value.

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Let's say one.

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And the other one is a time unit.

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This is an enumeration.

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So here we can say we want to wait one second.

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Now, this will return a new completable future that we time

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out after one second.

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So if we call the get method to get the result,

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we're going to get an exception.

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Let's wrap this inside a try catch block.

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Okay,

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now we get the result and start over here and finally print

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it. Let's run the program.

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So after one second our program crashed we got an exception of type execution

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exception which is caused by a timeout exception Okay,

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now this is not an ideal experience for the end user a

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better approach is to recover with a default value so Instead

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of calling or timeout.

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We're going to call complete on timeout

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Here we need to pass three values.

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The first one is the default value that we're going to return if this task times

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out. So we're going to return one.

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The second is our timeout value.

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Once again,

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one and finally a time unit.

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So time unit dot seconds.

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So this will return a new completable future that

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will complete after one second.

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S… Speaker 1 (16- Handling timeouts)

So let me reformat the code.

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That is better.

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Now let's run the program again.

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This time,

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after one second,

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we got our default value.

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This is a better experience for the end user.

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