iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

BEAL-572 different strategies of handling hot-observable

This commit is contained in:
Tomasz Lelek 2017-02-01 15:12:51 +01:00
parent 694931a190
commit 2065c3ca51
7 changed files with 174 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
rxjava/src/main/java/com/baelding/rxjava/ColdObservableBackpressure.java Normal file
View File

@ -0,0 +1,44 @@
package com.baelding.rxjava;
import rx.Observable;
import rx.Subscriber;
import rx.schedulers.Schedulers;
public class ColdObservableBackPressure {
public static void main(String[] args) throws InterruptedException {
Observable.range(1, 1_000_000)
.observeOn(Schedulers.computation())
.subscribe(v -> ComputeFunction.compute(v), Throwable::printStackTrace);
Thread.sleep(10_000);
// Observable.range(1, 1_000_000) //implementation of reactive pull backpressure on cold observable
// .subscribe(new Subscriber<Integer>() {
// @Override
// public void onStart() {
// request(1);
// }
//
// public void onNext(Integer v) {
// compute(v);
//
// request(1);
// }
//
// @Override
// public void onError(Throwable ex) {
// ex.printStackTrace();
// }
//
// @Override
// public void onCompleted() {
// System.out.println("Done!");
// }
// });
}
}

37
rxjava/src/main/java/com/baelding/rxjava/ComputeFunction.java Normal file
View File

@ -0,0 +1,37 @@
package com.baelding.rxjava;
import rx.Observable;
import java.util.List;
public class ComputeFunction {
public static void compute(Integer v) {
try {
System.out.println("compute integer v: " + v);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public static void compute(List<Integer> v) {
try {
System.out.println("compute integer v: " + v);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public static void compute(Observable<Integer> v) {
try {
System.out.println("compute integer v: " + v);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

22
rxjava/src/main/java/com/baelding/rxjava/HotObservableBackPressureBatching.java Normal file
View File

@ -0,0 +1,22 @@
package com.baelding.rxjava;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
public class HotObservableBackPressureBatching {
public static void main(String[] args) throws InterruptedException {
PublishSubject<Integer> source = PublishSubject.<Integer>create();
//buffer
source.window(500)
.observeOn(Schedulers.computation())
.subscribe(ComputeFunction::compute, Throwable::printStackTrace);
for (int i = 0; i < 1_000_000; i++) {
source.onNext(i);
}
Thread.sleep(10_000);
}
}

23
rxjava/src/main/java/com/baelding/rxjava/HotObservableBackPressureBuffering.java Normal file
View File

@ -0,0 +1,23 @@
package com.baelding.rxjava;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
public class HotObservableBackPressureBuffering {
public static void main(String[] args) throws InterruptedException {
PublishSubject<Integer> source = PublishSubject.<Integer>create();
//buffer
source
.buffer(1024)
.observeOn(Schedulers.computation())
.subscribe(ComputeFunction::compute, Throwable::printStackTrace);
for (int i = 0; i < 1_000_000; i++) {
source.onNext(i);
}
Thread.sleep(10_000);
}
}

27
rxjava/src/main/java/com/baelding/rxjava/HotObservableBackPressureSkipping.java Normal file
View File

@ -0,0 +1,27 @@
package com.baelding.rxjava;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
import java.util.concurrent.TimeUnit;
public class HotObservableBackPressureSkipping {
public static void main(String[] args) throws InterruptedException {
PublishSubject<Integer> source = PublishSubject.<Integer>create();
//buffer
source
// .debounce(1, TimeUnit.SECONDS)
// .sample(1, TimeUnit.SECONDS)
// .throttleFirst(100, TimeUnit.MILLISECONDS)
.throttleLast(100, TimeUnit.MILLISECONDS)
.observeOn(Schedulers.computation())
.subscribe(ComputeFunction::compute, Throwable::printStackTrace);
for (int i = 0; i < 1_000_000; i++) {
source.onNext(i);
}
Thread.sleep(10_000);
}
}

30
rxjava/src/main/java/com/baelding/rxjava/HotObservableBackpressure.java
View File

@ -1,30 +0,0 @@
package com.baelding.rxjava;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
public class HotObservableBackPressure {
public static void main(String[] args) throws InterruptedException {
PublishSubject<Integer> source = PublishSubject.create();
source
.observeOn(Schedulers.computation())
.subscribe(v -> compute(v), Throwable::printStackTrace);
for (int i = 0; i < 1_000_000; i++) {
source.onNext(i);
}
Thread.sleep(10_000);
}
private static void compute(Integer v) {
try {
System.out.println("compute integer v: "+ v);
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

21
rxjava/src/main/java/com/baelding/rxjava/HotObservableWithoutBackPressure.java Normal file
View File

@ -0,0 +1,21 @@
package com.baelding.rxjava;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
public class HotObservableWithoutBackPressure {
public static void main(String[] args) throws InterruptedException {
PublishSubject<Integer> source = PublishSubject.<Integer>create();
//buffer
source.observeOn(Schedulers.computation())
.subscribe(ComputeFunction::compute, Throwable::printStackTrace);
for (int i = 0; i < 1_000_000; i++) {
source.onNext(i);
}
Thread.sleep(10_000);
}
}