backpressure Questions

5

I'm making use of the (frankly great) BlockingCollection<T> type for a heavily multithreaded, high-performance app. There's a lot of throughput through the collection and on the micro-level i...
Beltane asked 21/1, 2012 at 13:37

3

I am using Live Data to publish states from View Model to Fragments, this might result in states getting published frequently. But the Mutable Live Data is skipping the initial values and taking th...
Pectoral asked 14/10, 2019 at 15:34

2

Solved

I am using the excellent Papa Parse library in nodejs mode, to stream a large (500 MB) CSV file of over 1 million rows, into a slow persistence API, that can only take one request at a time. The pe...

3

Solved

In RxJava 2 Flowable there are different backpressure strategies, among them the most interesting are: LATEST BUFFER DROP which are respected throughout whole Rx chain. In Kotlin there is Flow...
Porphyrin asked 25/1, 2020 at 15:24

3

I am a beginner of RxJava and I am curious about the meaning of "backpressure". Does it mean that the producer puts pressure behind the consumer's back? Or does it mean that consumers are putting...
Refectory asked 1/10, 2017 at 23:57

2

Solved

I'm analyzing the backpressure feature on Spark Structured Streaming. Does anyone know the details? Is it possible to tune process incoming records by code? Thanks
Flyback asked 2/7, 2017 at 14:4

1

I started learning NodeJS, and streams seems to be something that people use a lot. In most of the documentation that I had read there are mentions of the "back-pressure problem" that occ...
Endocrinology asked 4/1, 2017 at 16:28

1

Solved

I'm a starter in Spring Web-Flux. I wrote a controller as follows: @RestController public class FirstController { @GetMapping("/first") public Mono<String> getAllTweets() { return Mon...

3

I am writing a module, which is a writeable stream. I want to implement pipe interface for my users. If some error happens, i need to pause readable stream and emit error event. Then, user will de...
Alterable asked 28/10, 2015 at 8:29

1

Solved

I have a CustomReceiver which receives a single event(String).The received single event is used during spark application's run time to read data from nosql and to apply transformations.When the pro...
Janijania asked 25/1, 2017 at 0:19

2

I have a situation in Kafka where the producer publishes the messages at a very higher rate than the consumer consumption rate. I have to implement the back pressure implementation in kafka for fur...
Crimson asked 5/4, 2018 at 2:51

1

Solved

I am new to the world of reactive programming and I am trying to create a simple backpressure aware message processing using rxjava 2. Following is the workflow I am trying to achieve: Flowable ...
Wroth asked 12/5, 2017 at 9:29

0

In akka-http, you can: Set akka.http.server.max-connections, which will prevent more than that number of connections. Exceeding this limit means clients will get connection timeouts. Set akka.htt...
Deadlock asked 13/10, 2017 at 22:12

5

Solved

Consider using the zip operator to zip together two infinite Observables, one of which emits items twice as frequently as the other. The current implementation is loss-less, i.e. if I keep these Ob...
Peritonitis asked 6/10, 2017 at 9:25

1

Solved

recently I realized that I don't understand how RxJava2 backpressure works. I made small test and I expect that it should fail with MissingBackpressureException exception: @Test public void testB...
Probabilism asked 21/6, 2017 at 10:57

1

We have a Spark Streaming application, it reads data from a Kafka queue in receiver and does some transformation and output to HDFS. The batch interval is 1min, we have already tuned the backpressu...

1

Solved

I wrote some core.async code in Clojure and when I ran it it consumed all available memory and failed with an error. It appears that using mapcat in a core.async pipeline breaks back pressure. (Whi...
Tinsley asked 21/6, 2016 at 19:51

2

I want to observer the mousewheel event using RxJS-DOM so that when the first event fires, I forward that on and then drop any and all values until the delay between subsequent values passes a prev...
Drainage asked 19/5, 2016 at 23:6

2

I have a service that consumes messages off of a queue at a rate that I control. I do some processing and then attempt to write to a Cassandra cluster via the Datastax Java client. I have setup my ...
Lati asked 10/2, 2016 at 19:8

2

Solved

I have an rx.Observable which emits the progress of a task to onNext(). The onNext() emissions can sometimes occur so quickly that the Observer cannot keep up, resulting in backpressure. I would li...
Quadrivium asked 4/8, 2015 at 17:51

1

Solved

As I understand it, one of the consequences of Node's evented IO model is the inability to tell a Node process that is (for example) receiving data over a TCP socket, to block, once you've hooked u...
Keeter asked 11/8, 2014 at 6:26
1

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