Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Power of False Negative Awareness in Indicator-based Caching
  Systems   Distributed caching systems such as content distribution networks often
advertise their content via lightweight approximate indicators (e.g., Bloom
filters) to efficiently inform clients where each datum is likely cached. While
false-positive indications are necessary and well understood, most existing
works assume no false-negative indications. Our work illustrates practical
scenarios where false-negatives are unavoidable and ignoring them has a
significant impact on system performance. Specifically, we focus on
false-negatives induced by indicator staleness, which arises whenever the
system advertises the indicator only periodically, rather than immediately
reporting every change in the cache. Such scenarios naturally occur, e.g., in
bandwidth-constraint environments or when latency impedes the ability of each
client to obtain an updated indicator. Our work introduces novel false-negative
aware access policies that continuously estimate the false-negative ratio and
sometimes access caches despite negative indications. We present optimal
policies for homogeneous settings and provide approximation guarantees for our
algorithms in heterogeneous environments. We further perform an extensive
simulation study with multiple real system traces. We show that our
false-negative aware algorithms incur a significantly lower access cost than
existing approaches or match the cost of these approaches while requiring an
order of magnitude fewer resources (e.g., caching capacity or bandwidth).

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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: gr-qc