Understanding the relationship between shareNativeConnection and lettuce pool properties.

[Nicolas-Miranda]

Hi,
I'm starting using the Redis Reactive client along with Lettuce for a cache implementation in a Spring Boot application and while reading the documentation and navigating through the Lettuce code some questions appeared as I got confused with the properties mentioned in the title.

As I understand so far, Lettuce uses a shared connection by default and as part of the Spring application properties for Redis, there are the following pool configurations with the values that I'm currently using:

  lettuce:
    pool:
      enabled: true
      max-active: 8
      max-idle: 1
      min-idle: 1
      time-between-eviction-runs: 10m

Does the above configuration have any effect if Lettuce uses a single shared connection by default or pool should only be enabled when the shareNativeConnection flag is set to false?

From the documentation regarding Async pool support https://github.com/lettuce-io/lettuce-core/wiki/Connection-Pooling#asynchronous-connection-pooling, it is mentioned that to use the async connection pooling no dependencies are needed. But when I the pool in lettuce:pool:enable, the LettucePoolingClientConfigurationBuilder used in Spring autoconfiguration still requires the Apache commons-pool2 dependency in:

org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration.LettucePoolingClientConfigurationBuilder#poolConfig

Is the Async pool support not yet supported by the Spring Autoconfiguration when including the above properties?

Thanks so much in advance for the help!