The next N elements that arrive before SelectAsync has finished the first element are dropped, then the 2 message is taken from the async buffer and one moves from the actor buffer to the async buffer and therefor the actor can receive one additional message before it drops new messages again. So lets assume you receive 27 messages at the same time, one is passed to SelectAsync, 16 are stored in the async buffer and 10 in the buffer from the actor. Buffer( 16, Backpressure) // buffer that is created automatically for the async boundary from you source Buffer( 10, DropNew) // buffer from the actor source Deploy your solution using RabbitMQ, Azure Service Bus, ActiveMQ, and Amazon SQS/SNS without having to rewrite it. Return system.SystemActorOf(pluginActorProps, not exactly the same ) your stream looks like this Source AKKA.NET ACTOR fundamental abstraction analogy to the object in OO lifecycle. AKKA.NET ACTOR MODEL model for building systems that are distributed concurrent fault tolerant old concept (70’s) revisited Erlang/Elixir built-in support. to a service bus-based approach with MassTransit or Azure Service Bus.

Var pluginActorProps = new Props(pluginType, pluginActorArgs).WithRouter( new SmallestMailboxPool( 10)).WithDispatcher(pluginDispatcherId) ASYNC MESSAGING in CQRS PART 2: AKKA.NET DDD GREECE Athens. Thats why most well established enterprise customers and startups looking for. How come? Maybe I'm doing a stupid thing: internal Config ConfigFor (IActorRef journalPluginActor) : null Or does anyone has an idea where to start looking for causes? Persistence provider is SQL Server, using Akka 1.1.1, Akka.Persistence 1.1.1.28 and 1.1.1.5.Īnyone else running into problems like this. Last known sequence number |: Circuit Breaker is open calls are failing fast Persistence failure when replaying events for persistenceId. |: Circuit Breaker is open calls are failing fastĪt _32`1.MoveNext()

No multi subscribers for the messages- Since unlike Kafka which is a log, RabbitMQ is a queue and messages are removed once consumed and acknowledgment arrived. No need of automatically replicable queues. The system has been tested in UAT without problems, but things only go bananas in prod I guess.Īfter a few minutes under load, we start seeing the following log entries:įailed to persist event type with sequence number for persistenceId. Use RabbitMQ when: You don’t have to handle with Bigdata and you prefer a convenient in-built UI for monitoring.

Masstransit vs akka