configure concurrency
spring.kafka.listener.concurrency=50
if the program deploys two instances
, are there 100 consumer threads that belong to the consumer group orderGroup?
should be. After you start the program, you can take a look at it with the command of kafka:
look at how many consumption instances have been created for you, and groupID is the same. That belongs to the same group.
can serve as a redundant and loaded job, but it is not reasonable to allocate 100 instances in two processes.
you can have 4 processes, each process has N consumption instances, and the specific number depends on the number of partitions of your Topic .
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