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Akka Projections 1.0.0-RC1 released

Dear Hakkers, The Akka contributors are happy to announce the first release candidate of Akka Projections, version 1.0.0-RC1. If no serious bug is reported this RC1 will become GA. We consider the API...

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Akka Streams: Force just one initial Publisher#request(1), no buffering

It appears that when subscribing to a Source, I get 2 events pulled from it, even if I limit the “input” buffer to its minimum size: .withAttributes(Attributes.inputBuffer(0, 1)) Minimal sample:...

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What are Cons and pros for KafkaProducer vs SendProducer?

Hi, I’m beginner… I wanna know more about SendProducer. I see the documentation that “For use-cases that don’t benefit form Akka Streams, the Send Producer offers a Future-based send API.” Future...

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What is best way to define http().bindAndHandle

Hi I need to build a project with akka typed and akka http so i have some questions: 1- when we use both akka(typed) and akka http , we must create two actorsystem? 2- what is the best way to define...

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Why am I getting an overloaded method error, and how can I fix it?

I am building a WebSockets server. The center is a flow that manages the WebSockets messages coming in and out. The Flow needs to take an ActorSource, where that Actor becomes somewhat like the...

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Choosing actor in akka http

hi when using akka http, how we should choose actor? for example i have 6 api(6 route with many get-post methods): /user, /order, /admin, … all 6 api should be actor( i think this is true)? or no...

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Akka Kubernetes Error

Hi, I’m facing issue in akka cluster on kubernetes. [Cluster(akka://vishnu-controller)] - Cluster Node [akka://vishnu-controller@127.0.0.1:2550] - Started up successfully [2020-07-28 15:58:43,431]...

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Akka kubernetes errror

I’m facing this issue with akka cluster on kubernetes [2020-07-28 16:31:45,392] [WARN] [akka.management.cluster.bootstrap.internal.HttpContactPointBootstrap]...

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How can I supervise an actor materialized out of an ActorSource?

Say I materialize an actor inside a Flow definition from an ActorSource argument that I passed into the GraphDSL.create() call. I want to ensure this actor is supervised; it forms an essential part of...

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Akka Streams takeWhile processing elements even after condition fails

EDIT: I think this may be a bug, so i have reported this as a bug as well. I have a very simple actor that just prints the number :- public class PrintLineActor extends AbstractLoggingActor {...

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MqttSink CircuitBreaker

Hi, I’m try to understand how integrate “Publish Mqtt” using CircuitBreaker to check broker Mqtt service. Can you help me with some code example please ? For http.singlerequest i have found docs and...

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Akka Use case discussion

Hi, I was exploring akka for one of the use-case where I need to shard and persist data. I want to build system which can easily scale up-to millions on entries with operations like: a) put - stores...

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Source.queue with cachedHostConnectionPool in Java

Hi, I am trying to use source.queue with cachedHostConnectionPool in java but not able to get the correct output. Below is my attempt at it. I am always getting success response, which i understand...

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Akka Persistence : PersistencePluginProxy setup failing

(topic withdrawn by author, will be automatically deleted in 24 hours unless flagged) 1 post - 1 participant Read full topic

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Getting Materializer.settings.maxFixedBufferSize

Upgrading Play framework version, which led to an Akka upgrade, which deprecated Materializer.settings, with a reference to “Use attributes to access settings from stages”. The attribute i need to...

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Akka HTTP 10.2.0 Released

Dear hakkers, We are happy to announce the 10.2.0 release of Akka HTTP. Akka HTTP 10.2 is a modernization release to improve the integration with the latest Akka versions, streamline APIs, and improve...

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Problem with Akka cluster aware Pool routers

Hi guys i have problem with Akka cluster aware routers, we have an routee actor with some constructor params , and one of the params is a java base RedisClient that is no serializable , and we we...

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Recommended new way to pass in TLSClientAuth in Akka HTTP 10.2 API

Hello, first let me say nice work on the Akka HTTP 10.2 release. The migration has been quite easy, and as an Akka gRPC users, many changes are greatly appreciated. The one question I have is that...

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How to Passivate a EventSourcedBehavior entity

The only example in the documentation suggest to send a Passivate message to shard. https://doc.akka.io/docs/akka/current/typed/cluster-sharding.html#passivation shard.tell(new...

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ACK the commitablereadresult using both source and destination are RabbitMQ...

I need to implement rabbitmq + alpakka combination. I have 2 queues in rabbitmq (sourceQ and destinationQ).Cosume from sourceQ and tranform the message and put out it back the new transformed message...

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