Reducing DNS caching

Saleem N. Bhatti; Randall Atkinson

doi:10.1109/INFCOMW.2011.5928919

Reducing DNS caching

Saleem N. Bhatti^*, Randall Atkinson

^*Corresponding author for this work

School of Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Motivated by our ongoing work exploring an alternative Internet architecture, we wish to make use of naming services in order to support functionality such as: host and network mobility; application and/or virtual machine migration; and various forms of traffic control (e.g. multi-homing). Currently, the Domain Name System (DNS) is used to resolve names to DNS records, with relatively large time-to-live (TTL) values (several thousands of seconds) for caching the results. To support new agile services and systems, cached results may need to have much lower TTL values, so that cached DNS values do not become stale as system changes occur, e.g. changes to end-system location information to support new methods of mobility. However, current conventions for DNS configuration normally use conservatively high TTL values. We have conducted an empirical study of a live DNS deployment where we have reduced to zero the TTL values of records for the entire School of Computer Science at the University of St Andrews. Our results show that the increase in DNS load is much lower than might be expected, following a highly non-linear decrease with respect to the TTL value of the DNS records.

Original language	English
Title of host publication	2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011
Pages	792-797
Number of pages	6
DOIs	https://doi.org/10.1109/INFCOMW.2011.5928919
Publication status	Published - 26 Jul 2011
Event	2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011 - Shanghai, China Duration: 10 Apr 2011 → 15 Apr 2011

Publication series

Name	2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011

Conference

Conference	2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011
Country/Territory	China
City	Shanghai
Period	10/04/11 → 15/04/11

Access to Document

10.1109/INFCOMW.2011.5928919

Cite this

@inproceedings{d56637cb629d46cf8af93eb2f1970947,

title = "Reducing DNS caching",

abstract = "Motivated by our ongoing work exploring an alternative Internet architecture, we wish to make use of naming services in order to support functionality such as: host and network mobility; application and/or virtual machine migration; and various forms of traffic control (e.g. multi-homing). Currently, the Domain Name System (DNS) is used to resolve names to DNS records, with relatively large time-to-live (TTL) values (several thousands of seconds) for caching the results. To support new agile services and systems, cached results may need to have much lower TTL values, so that cached DNS values do not become stale as system changes occur, e.g. changes to end-system location information to support new methods of mobility. However, current conventions for DNS configuration normally use conservatively high TTL values. We have conducted an empirical study of a live DNS deployment where we have reduced to zero the TTL values of records for the entire School of Computer Science at the University of St Andrews. Our results show that the increase in DNS load is much lower than might be expected, following a highly non-linear decrease with respect to the TTL value of the DNS records.",

author = "Bhatti, {Saleem N.} and Randall Atkinson",

year = "2011",

month = jul,

day = "26",

doi = "10.1109/INFCOMW.2011.5928919",

language = "English",

isbn = "9781457702488",

series = "2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011",

pages = "792--797",

booktitle = "2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011",

note = "2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011 ; Conference date: 10-04-2011 Through 15-04-2011",

}

Bhatti, SN & Atkinson, R 2011, Reducing DNS caching. in 2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011., 5928919, 2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011, pp. 792-797, 2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011, Shanghai, China, 10/04/11. https://doi.org/10.1109/INFCOMW.2011.5928919

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AU - Atkinson, Randall

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AB - Motivated by our ongoing work exploring an alternative Internet architecture, we wish to make use of naming services in order to support functionality such as: host and network mobility; application and/or virtual machine migration; and various forms of traffic control (e.g. multi-homing). Currently, the Domain Name System (DNS) is used to resolve names to DNS records, with relatively large time-to-live (TTL) values (several thousands of seconds) for caching the results. To support new agile services and systems, cached results may need to have much lower TTL values, so that cached DNS values do not become stale as system changes occur, e.g. changes to end-system location information to support new methods of mobility. However, current conventions for DNS configuration normally use conservatively high TTL values. We have conducted an empirical study of a live DNS deployment where we have reduced to zero the TTL values of records for the entire School of Computer Science at the University of St Andrews. Our results show that the increase in DNS load is much lower than might be expected, following a highly non-linear decrease with respect to the TTL value of the DNS records.

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ER -

Reducing DNS caching

Abstract

Publication series

Conference

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dns-2009-q4-count : data files for paper, "Reducing DNS Caching", from GI2011

Cite this

Reducing DNS caching

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

Datasets

dns-2009-q4-count : data files for paper, "Reducing DNS Caching", from GI2011

Cite this