| commit | 9fe66edefe0d3280b60f26c442073515dfd78e39 | [log] [tgz] |
|---|---|---|
| author | dferstay <dferstay@users.noreply.github.com> | Tue Dec 01 22:44:57 2020 -0800 |
| committer | GitHub <noreply@github.com> | Wed Dec 02 14:44:57 2020 +0800 |
| tree | 69db7de61b0d88effb07d54e7e0aa0e2b1a4e7e4 | |
| parent | 154bff0bb825a4f23aed675eecd3959376214850 [diff] |
Read the clock fewer times during message routing (#408) Previously, we read the system clock twice for each event unless we switched partitions early due to reaching `maxBatchingMessages` or `maxBatchingSize`. Now, we read the clock once every `maxBatchingMessages / 100` messages. This improves performance (especially for larger batch sizes) as the router function is called for every message produced. A bench test of the default router was added; results are below: ``` name old time/op new time/op delta DefaultRouter 106ns ± 0% 16ns ± 1% -84.94% (p=0.016 n=4+5) DefaultRouter-4 106ns ± 0% 16ns ± 0% ~ (p=0.079 n=4+5) ``` Signed-off-by: Daniel Ferstay <dferstay@splunk.com> Co-authored-by: Daniel Ferstay <dferstay@splunk.com>
A Go client library for the Apache Pulsar project.
This projects is developing a pure-Go client library for Pulsar that does not depend on the C++ Pulsar library.
Once feature parity and stability are reached, this will supersede the current CGo based library.
Check the Projects page at https://github.com/apache/pulsar-client-go/projects for tracking the status and the progress.
Import the client library:
import "github.com/apache/pulsar-client-go/pulsar"
Create a Producer:
client, err := pulsar.NewClient(pulsar.ClientOptions{
URL: "pulsar://localhost:6650",
})
defer client.Close()
producer, err := client.CreateProducer(pulsar.ProducerOptions{
Topic: "my-topic",
})
_, err = producer.Send(context.Background(), &pulsar.ProducerMessage{
Payload: []byte("hello"),
})
defer producer.Close()
if err != nil {
fmt.Println("Failed to publish message", err)
}
fmt.Println("Published message")
Create a Consumer:
client, err := pulsar.NewClient(pulsar.ClientOptions{
URL: "pulsar://localhost:6650",
})
defer client.Close()
consumer, err := client.Subscribe(pulsar.ConsumerOptions{
Topic: "my-topic",
SubscriptionName: "my-sub",
Type: pulsar.Shared,
})
defer consumer.Close()
msg, err := consumer.Receive(context.Background())
if err != nil {
log.Fatal(err)
}
fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
msg.ID(), string(msg.Payload()))
Create a Reader:
client, err := pulsar.NewClient(pulsar.ClientOptions{URL: "pulsar://localhost:6650"})
if err != nil {
log.Fatal(err)
}
defer client.Close()
reader, err := client.CreateReader(pulsar.ReaderOptions{
Topic: "topic-1",
StartMessageID: pulsar.EarliestMessageID(),
})
if err != nil {
log.Fatal(err)
}
defer reader.Close()
for reader.HasNext() {
msg, err := reader.Next(context.Background())
if err != nil {
log.Fatal(err)
}
fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
msg.ID(), string(msg.Payload()))
}
Contributions are welcomed and greatly appreciated. See CONTRIBUTING.md for details on submitting patches and the contribution workflow.
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|---|---|---|---|---|
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Pulsar slack channel #dev-go at https://apache-pulsar.slack.com/
You can self-register at https://apache-pulsar.herokuapp.com/
Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0