CODEWITHSUNDEEP
spring-bootspring-webfluxspring-async
Abhishek Dash
Abhishek Dash

Reputation: 53

Spring Web Flux and Spring Async method what is the difference?

I am new to Spring Reactive programming and Spring Async methods. I have a doubt. By using spring webflux we can have reactive programming so that we can execute a particular piece of code and our current thread need not to wait for it to finish the execution. Similarly by using @async method we can make that particular piece of code run in a different thread so that our current thread wont wait.

So in these cases how webflux and async method are different and when to use which?

Upvotes: 3

Views: 2191

Answers (2)

Aditya Rewari
Aditya Rewari

Reputation: 2707

Your question alomost mentions the difference, where you say in a different thread

Reason of Confusion: Webfux and @Async , both run Asynchronously from the thread they are being called.

Now Lets Drill Down Further..

Weblux, it runs asynchronously, but NOT because a new Thread is spawned.

It is build around publisher-subscriber pattern (Observer Pattern), which provides it the Asynchronous nature.

Upvotes: 1

Michael Berry
Michael Berry

Reputation: 72399

They're chalk and cheese - they're different enough that they're not really directly comparable.

The @Async annotation simply executes the annotated method in a separate thread, and doesn't block on that thread before returning (doesn't wait for it to finish.) The normal use case for async is for fire-and-forget (or fire-and-read-later) scenarios, for long running tasks, in a traditional blocking environment.

Webflux on the other hand chucks out the traditional blocking threading model entirely, and instead serves every request through an event loop of just a handful of threads that must never block. To do so requires a fundamentally different style of writing code than a traditional blocking application. It's not just used for fire-and-forget scenarios, it becomes the default way you handle every request that comes into your application.

Upvotes: 2

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