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Apache Kafka®

Apache Kafka® is an open-source stream-processing software platform developed by LinkedIn and donated to the Apache Software Foundation, written in Scala and Java.

CAP has supported Kafka® as message transporter.

Configuration

To use Kafka transporter, you need to install the following extensions from NuGet:

PM> Install-Package DotNetCore.CAP.Kafka

Then you can add memory-based configuration items to the ConfigureServices method of Startup.cs.

public void ConfigureServices(IServiceCollection services)
{
    // ...

    services.AddCap(x =>
    {
        x.UseKafka(opt=>{
            //KafkaOptions
        });
        // x.UseXXX ...
    });
}

Kafka Options

The Kafka configuration parameters provided directly by the CAP are as follows:

NAME	DESCRIPTION	TYPE	DEFAULT
Servers	Broker server address	string
ConnectionPoolSize	connection pool size	int	10

Kafka MainConfig Options

If you need more native Kakfa related configuration items, you can set it with the MainConfig configuration option:

services.AddCap(capOptions => 
{
    capOptions.UseKafka(kafkaOption=>
    {
        // kafka options.
        // kafkaOptions.MainConfig.Add("", "");
    });
});

MainConfig is a configuration dictionary, you can find a list of supported configuration items through the following link.

https://github.com/edenhill/librdkafka/blob/master/CONFIGURATION.md