[PERF] Thread configuration for WebAdmin, redis and some reactor improvments

[chibenwa]

No description provided.

[chibenwa]

org.apache.james.events.RabbitMQEventBusTest.eventProcessingShouldStoreInvalidMessagesInDeadLetterQueue
org.apache.james.events.RabbitMQEventBusTest.eventProcessingShouldNotCrashOnInvalidMessages 
org.apache.james.events.RabbitMQEventBusTest.eventProcessingShouldNotCrashOnInvalidMessage 
org.apache.james.webadmin.WebAdminConfigurationTest.shouldMatchBeanContract

Likely related

[Arsnael]

Some errors in RabbitMQEventBusTest likely linked to your change on event executions:

org.apache.james.events.RabbitMQEventBusTest.eventProcessingShouldStoreInvalidMessagesInDeadLetterQueue
org.awaitility.core.ConditionTimeoutException: 
Assertion condition defined as a lambda expression in org.apache.james.events.RabbitMQEventBusTest that uses java.util.concurrent.atomic.AtomicInteger 
expected: 1
 but was: 0 within 10 seconds.
	at org.apache.james.events.RabbitMQEventBusTest.eventProcessingShouldStoreInvalidMessagesInDeadLetterQueue(RabbitMQEventBusTest.java:247)
Caused by: org.opentest4j.AssertionFailedError: 

expected: 1
 but was: 0
	at org.apache.james.events.RabbitMQEventBusTest.lambda$eventProcessingShouldStoreInvalidMessagesInDeadLetterQueue$5(RabbitMQEventBusTest.java:247)

And one related to your change on the webadmin conf:

org.apache.james.webadmin.WebAdminConfigurationTest.shouldMatchBeanContract
EqualsVerifier found a problem in class org.apache.james.webadmin.WebAdminConfiguration.
-> Significant fields: equals does not use maxThreadCount, or it is stateless.