提交 4abcb0b0 编写于 作者: Z zhanguohuang

Number the titles of Configuration_Client.md

上级 eb1e9155
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Relative to RocketMQ's Broker cluster, producers and consumers are client. In this section, it mainly describes the common behavior configuration of producers and consumers.
### Client Addressing mode
### 1 Client Addressing mode
```RocketMQ``` can let client find the ```Name Server```, and then find the ```Broker```by the ```Name Server```. Followings show a variety of configurations, and priority level from highly to lower, the highly priority configurations can override the lower priority configurations.
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```
HTTP static server addressing is recommended, because it is simple client deployment, and the Name Server cluster can be upgraded hot.
### Client Configuration
### 2 Client Configuration
```DefaultMQProducer```,```TransactionMQProducer```,```DefaultMQPushConsumer```,```DefaultMQPullConsumer``` all extends the ```ClientConfig``` Class, ```ClientConfig``` as the client common configuration class. Client configuration style like getXXX,setXXX, each of the parameters can config by spring and also config their in the code. Such as the ```namesrvAddr``` parameter: ```producer.setNamesrvAddr("192.168.0.1:9876")```, same with the other parameters.
#### Client Common Configuration
#### 2.1 Client Common Configuration
| Pamater Name | Default Value | Description |
| ----------------------------- | ------- | ------------------------------------------------------------ |
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| heartbeatBrokerInterval | 30000 | The heartbeat interval, in milliseconds, is sent to the Broker |
| persistConsumerOffsetInterval | 5000 | The persistent Consumer consumes the progress interval in milliseconds |
#### Producer Configuration
#### 2.2 Producer Configuration
| Pamater Name | Default Value | Description |
| -------------------------------- | ---------------- | ------------------------------------------------------------ |
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| checkRequestHoldMax | 2000 | Producer local buffer request queue size when Broker look back Producer transaction status |
| RPCHook | null | This parameter is passed in when the Producer is creating, including the pre-processing before the message sending and the processing after the message response. The user can do some security control or other operations in the first interface.|
#### PushConsumer Configuration
#### 2.3 PushConsumer Configuration
| Pamater Name | Default Value | Description |
| ---------------------------- | ----------------------------- | ------------------------------------------------------------ |
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| consumeMessageBatchMaxSize | 1 | Batch consume message |
| pullBatchSize | 32 | Batch pull message |
#### PullConsumer Configuration
#### 2.4 PullConsumer Configuration
| Pamater Name | Default Value | Description |
| -------------------------------- | ----------------------------- | ------------------------------------------------------------ |
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| registerTopics | | Collection of registered topics |
| allocateMessageQueueStrategy | AllocateMessageQueueAveragely | Implements strategy about Rebalance algorithm |
#### Message Data Structure
#### 2.5 Message Data Structure
| Field Name | Default Value | Description |
| -------------- | ------ | ------------------------------------------------------------ |
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