Interface KeyFilter<R>

Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface public interface KeyFilter<R>
Functional interface to retrieve the Bucket4j key. The key is used to identify the Bucket4j storage.
  • Method Summary

    Modifier and Type
    Method
    Description
    key(ExpressionParams<R> expressionParams)
    Return the unique Bucket4j storage key.
  • Method Details

    • key

      String key(ExpressionParams<R> expressionParams)
      Return the unique Bucket4j storage key. You can think of the key as a unique identifier which is for example an IP-Address or a username. The rate limit is then applied to each individual key.
      Parameters:
      expressionParams - the expression params
      Returns:
      the key to identify the rate limit (IP, username, ...)