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Example code of meitu/php-consumergroup

Informations about the package php-consumergroup

php-consumergroup

php-consumergroup is a kafka consumer library with group and rebalance supports.

Chinese Doc

Requirements

Dependencies

Performance

78,000+ messages/s for single process

more detail benchmark

Example

see example.php

Consumer Options

Consumer::setMaxMessage()

Number, defaults to 32

If partitions > 1, it forces consumers to switch to other partitons when max message is reached, or other partitons will be starved

Consumer::setCommitInterval()

Millisecond, defaults to 500ms

Offset auto commit interval.

Consumer::setWatchInterval()

Millisecond, defaults to 10,000 ms

Time interval to check rebalance. Rebalance is triggered when the number of partition or consumer changes.

Consumer::setConsumeTimeout()

Millisecond, default is 1,000 ms

Kafka request timeout.

Consumer::setClientId()

String, defaults to "default"

Client id is used to identify consumers.

Consumer::setOffsetAutoReset()

smallest|largest, defaults to smallest

Consumer can choose whether to fetch the oldest or the lastest message when offset isn't present in zookeeper or is out of range.

Consumer::setConf()

Attribute and value are passed in

We can use this function to modify the librdkafka configuration。

more detail about librdkafka configuration.

Exception

Benchmark

Type Parmeter
CPU Intel(R) Xeon(R) CPU E5-2420 0 @ 1.90GHz
CPU Core 24
Memory 16G
Disk SSD
Network 1000Mbit/s
Os CentOS release 6.7

Benchmark is measured by produring 20,000,000 messages at single partition, and calculate the time it takes to consume those messages.

QPS is 78,000 messages/s when process cpu utility is 100%.

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