reactive-programming

I am performing some tests to evaluate if there is a real advantage in using reactive API's based on Observables, instead of the blocking traditional ones. The whole example is available on Githug Surprisingly the results show that the thoughput results are: The best : REST Services that return a Callable / DeferredResult that wraps the blocking operations. Not that bad : Blocking REST Services. The worst : REST Services that return a DeferredResult whose result is set by a RxJava Observable . This is my Spring WebApp: Application : @SpringBootApplication public class SpringNioRestApplication

I'm currently registering a subscriber to a property signal like this: [RACAble(self.test) subscribeNext:^(id x) { NSLog(@"signal fired!"); }]; The default functionality is that it fires every single time self.test is changed, but I just want it to fire once, and then unsubscribe. Is there a "once" argument or modifier I can pass to RAC when I create this subscriber? [[RACAble(self.test) take:1] subscribeNext:^(id x) { NSLog(@"signal fired!"); }]; That might be helpful especially when you create nested subscriptions: RACDisposable *subscription = [RACObserve(self, test) subscribeNext:^(id x) {

I have Observable stream, and I want to convert it to Completable, how I could do that? The fluent way is to use Observable.ignoreElements() . Observable.just(1, 2, 3) .ignoreElements() Convert it back via toObservable if needed. You can do something like below. Observable<Integer> observable = Observable.just(1, 2, 3); Completable completable = Completable.fromObservable(observable); Like on an Observable, you will have to subscribe to the completable to start the asynchronous process that Observable wraps. More details can be found here in the Java doc for the method . As I understand all

We are in the process of prototyping a REST API using reactive programming. As shown in the diagram, we keep 3 layers same as we used in our previouse sync API designs ; http://oi59.tinypic.com/339hhki.jpg API Layer implemented using Jersey2 which will process request/deserialize JSON and handover to Service Layer. Service Layer which implements the business-logic.Implemented using reactive programming (RxJava) Dao Layer which is used for persistence operations by Service Layer.Since we use CouchBase , this will use CouchBase RxClient. To my understanding the flow is as follows : a) HTTP

I am using scala 2.10 and I wonder If there is some package which has async IO when working with files? I did some search o this topic but mostly found examples as following val file = new File(canonicalFilename) val bw = new BufferedWriter(new FileWriter(file)) bw.write(text) bw.close() what essentially essentially java.io package with blocking IO operations - write, read etc. I also found scala-io project with this intention but it seems that project is dead last activity 2012. What is best practice in this scenario? Is there any scala package or the common way is wrapping java.io code to

CompletableFuture executes a task on a separate thread ( uses a thread-pool ) and provides a callback function. Let's say I have an API call in a CompletableFuture . Is that an API call blocking? Would the thread be blocked till it does not get a response from the API? ( I know main thread/tomcat thread will be non-blocking, but what about the thread on which CompletableFuture task is executing? ) Mono is completely non-blocking, as far as I know. Please shed some light on this and correct me if I am wrong. CompletableFuture is Async. But is it non-blocking? One which is true about

I'm implementing my first code with https://github.com/ReactiveCocoa/ReactiveCocoa . Is for login a user. The line [subscriber sendNext:user]; is called twice, but I expect to be only one. And the map is not called at all (so autologin is never called) This is my implementation: -(RACSignal *) login:(NSString *)email pwd:(NSString *)pwd { DDLogInfo(@"Login user %@", email); RACSignal *login = [RACSignal createSignal:^ RACDisposable *(id<RACSubscriber> subscriber) { [PFUser logInWithUsernameInBackground:email password:pwd block:^(PFUser *user, NSError *error) { if (error) { [subscriber