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Bloom Filters: Design Innovations and Novel Applications

机译:布隆过滤器:设计创新和新颖应用

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摘要

Bloom filters have been very interesting in networking because they enable the high speed, low cost implementation of various hardware algorithms. This paper introduces the idea of variable-length signatures, as opposed to the current practice of using fixed-length signatures. This idea naturally enables Bloom filters to perform flow deletions, a well-known problem with standard Bloom filters. Other uses of this idea are also presented and explored. A second contribution of the paper is the use of a bank of Bloom filters to identify the action that must be applied to the packets of a flow, or to dynamically record the state a flow is in. Our work shows that this approach is a promising alternative to expensive CAM or hash table lookups, and suggests a method of building cheap "fuzzy" flow memories.
机译:布隆过滤器在网络中非常有趣,因为它们可以实现各种硬件算法的高速,低成本实现。本文介绍了可变长度签名的概念,与当前使用固定长度签名的做法相反。这个想法自然使Bloom过滤器能够执行流删除,这是标准Bloom过滤器的一个众所周知的问题。还提出并探讨了此想法的其他用途。本文的第二个贡献是使用一组Bloom过滤器来标识必须应用于流数据包的动作,或者动态记录流所处的状态。我们的工作表明,这种方法是一种很有前途的方法替代昂贵的CAM或哈希表查找,并建议一种构建廉价的“模糊”流存储器的方法。

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