He-Pin commented on issue #1363:
URL: https://github.com/apache/pekko/issues/1363#issuecomment-2184927703

   Update:
   ```scala
   @InternalApi private[pekko] trait Buffer[T] {
     def capacity: Int
     def used: Int
     def isFull: Boolean
     def isEmpty: Boolean
     def nonEmpty: Boolean
   
     def enqueue(elem: T): Unit
     def dequeue(): T
   
     def peek(): T
     def clear(): Unit
     def dropHead(): Unit
     def dropTail(): Unit
   }
   ```
   as the current `Buffer`'s `clear`, `dropHead` and `dropTail` just returns 
`Unit`, change  it to `returns` `Seq[T]` or `T` will help , but that can 
involve: 1. large amount of change across the codebase, 2. hurt performance for 
`clear` case.
   
   So seems better to just add a new dedicated implementation with 
`onBackPressureDrop` as reactor-core?


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