.NET Stream Processing Library for Apache Kafka ^TM · ·

Package	Nuget version	Downloads
Streamiz.Kafka.Net
Streamiz.Kafka.Net.SchemaRegistry.SerDes
Streamiz.Kafka.Net.SchemaRegistry.SerDes.Avro
Streamiz.Kafka.Net.SchemaRegistry.SerDes.Protobuf
Streamiz.Kafka.Net.SchemaRegistry.SerDes.Json
Streamiz.Kafka.Net.Metrics.Prometheus
Streamiz.Kafka.Net.Metrics.OpenTelemetry

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Streamiz Kafka .NET is .NET stream processing library for Apache Kafka.

KAFKA is a registered trademark of The Apache Software Foundation and
has been licensed for use by Streamiz. Streamiz has no
affiliation with and is not endorsed by The Apache Software Foundation.

Try it with Gitpod

Step 1

Waiting run task is complete. The task is consider complete some seconds after viewing this message "🚀 Enjoy Streamiz the .NET Stream processing library for Apache Kafka (TM)"

Step 2

Switch to producer terminal and send sentences or word. The sample case is "Count the number words" similar to here

Step 3

Switch to consumerterminal and check aggregation result

Documentation

Read the full documentation on https://lgouellec.github.io/kafka-streams-dotnet/

Installation

Nuget packages are listed to nuget.org

Install the last version with :

dotnet add package Streamiz.Kafka.Net

Usage

There, a sample streamiz application :

static async System.Threading.Tasks.Task Main(string[] args)
{ 
    var config = new StreamConfig<StringSerDes, StringSerDes>();
    config.ApplicationId = "test-app";
    config.BootstrapServers = "localhost:9092";
    
    StreamBuilder builder = new StreamBuilder();

    var kstream = builder.Stream<string, string>("stream");
    var ktable = builder.Table("table", InMemory.As<string, string>("table-store"));

    kstream.Join(ktable, (v, v1) => $"{v}-{v1}")
           .To("join-topic");

    Topology t = builder.Build();
    KafkaStream stream = new KafkaStream(t, config);

    Console.CancelKeyPress += (o, e) => {
        stream.Dispose();
    };

    await stream.StartAsync();
}

Compare Kafka Streams vs Streamiz

Features	Kafka Streams (JAVA) supported	Streamiz supported	Comment
Stateless processors	X	X
RocksDb store	X	X
Standby replicas	X		No plan for now
InMemory store	X	X
Transformer, Processor API	X	X
Punctuate	X	X
KStream-KStream Join	X	X
KTable-KTable Join	X	X
KTable-KTable FK Join	X		Plan for future
KStream-KTable Join	X	X
KStream-GlobalKTable Join	X	X
KStream Async Processing (external call inside the topology)		X	Not supported in Kafka Streams JAVA
Hopping window	X	X
Tumbling window	X	X
Sliding window	X		No plan for now
Session window	X		No plan for now
Cache	X	X	EA 1.6.0
Suppress(..)	X		No plan for now
Interactive Queries	X		No plan for now
State store batch restoring	X		No plan for now
Exactly Once (v1 and v2)	X	X	EOS V1 supported, EOS V2 not supported yet

Contributing

Maintainers:

• lgouellec

Streamiz Kafka .Net is a community project. We invite your participation through issues and pull requests! You can peruse the contributing guidelines.

When adding or changing a service please add tests and documentations.

Support

You can found support here

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