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JetStream

Detailed documentation on the NATS JetStream component

配置

要设置 JetStream pubsub，请创建一个类型为 pubsub.jetstream 的组件。 请参阅本指南，了解如何创建和应用 pubsub 配置。

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: jetstream-pubsub
  namespace: default
spec:
  type: pubsub.jetstream
  version: v1
  metadata:
  - name: natsURL
    value: "nats://localhost:4222"
  - name: name
    value: "connection name"
  - name: durableName
    value: "consumer durable name"
  - name: queueGroupName
    value: "queue group name"
  - name: startSequence
    value: 1
  - name: startTime # in Unix format
    value: 1630349391
  - name: deliverAll
    value: false
  - name: flowControl
    value: false

元数据字段规范

字段 必填 详情 示例
natsURL Y NATS 服务器地址 URL “nats://localhost:4222”
name N NATS 连接名称 "my-conn-name"
durableName N Durable name "my-durable"
queueGroupName N 队列组名称 "my-queue"
startSequence N Start Sequence 1
startTime N Start Time in Unix format 1630349391
deliverAll N Set deliver all as Replay Policy true
flowControl N Flow Control true

创建NATS服务器


You can run a NATS Server with JetStream enabled locally using Docker:

docker run -d -p 4222:4222 nats:latest -js

然后，您可以使用 localhost:4222 与服务器进行交互。


Install NATS JetStream on Kubernetes by using the helm:

helm repo add nats https://nats-io.github.io/k8s/helm/charts/
helm install my-nats nats/nats

This installs a single NATS server into the default namespace. To interact with NATS, find the service with: kubectl get svc my-nats.

相关链接