{"id":"https://openalex.org/W2567951755","doi":"https://doi.org/10.1109/tcomm.2015.2506161","title":"When Do Redundant Requests Reduce Latency?","display_name":"When Do Redundant Requests Reduce Latency?","publication_year":2015,"publication_date":"2015-12-08","ids":{"openalex":"https://openalex.org/W2567951755","doi":"https://doi.org/10.1109/tcomm.2015.2506161","mag":"2567951755"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2015.2506161","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2015.2506161","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5034272491","display_name":"Nihar B. Shah","orcid":"https://orcid.org/0000-0001-5158-9677"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nihar B. Shah","raw_affiliation_strings":["Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101899300","display_name":"Kangwook Lee","orcid":"https://orcid.org/0000-0002-3360-9678"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kangwook Lee","raw_affiliation_strings":["Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030620564","display_name":"Kannan Ramchandran","orcid":"https://orcid.org/0000-0002-4567-328X"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kannan Ramchandran","raw_affiliation_strings":["Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I95457486"],"apc_list":null,"apc_paid":null,"fwci":12.4584,"has_fulltext":false,"cited_by_count":145,"citation_normalized_percentile":{"value":0.98600974,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":100},"biblio":{"volume":"64","issue":"2","first_page":"715","last_page":"722"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10101","display_name":"Cloud Computing and Resource Management","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6638028025627136},{"id":"https://openalex.org/keywords/latency","display_name":"Latency (audio)","score":0.48768699169158936},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.46271488070487976},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.24827051162719727}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6638028025627136},{"id":"https://openalex.org/C82876162","wikidata":"https://www.wikidata.org/wiki/Q17096504","display_name":"Latency (audio)","level":2,"score":0.48768699169158936},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.46271488070487976},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.24827051162719727}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2015.2506161","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2015.2506161","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","score":0.44999998807907104,"display_name":"Industry, innovation and infrastructure"}],"awards":[{"id":"https://openalex.org/G1612907501","display_name":"Small: CIF: Foundations of Next-Generation Reliable, Energy-Efficient and Secure Distributed Storage Systems","funder_award_id":"1116404","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":40,"referenced_works":["https://openalex.org/W78702648","https://openalex.org/W154253821","https://openalex.org/W191457578","https://openalex.org/W1605875146","https://openalex.org/W1672859716","https://openalex.org/W1876812886","https://openalex.org/W1898864119","https://openalex.org/W1930996999","https://openalex.org/W1965212750","https://openalex.org/W1973190970","https://openalex.org/W1979205928","https://openalex.org/W1982063824","https://openalex.org/W1997502752","https://openalex.org/W2022138967","https://openalex.org/W2036625304","https://openalex.org/W2072019125","https://openalex.org/W2079212753","https://openalex.org/W2085666943","https://openalex.org/W2092631610","https://openalex.org/W2114504293","https://openalex.org/W2128530065","https://openalex.org/W2150620836","https://openalex.org/W2152340385","https://openalex.org/W2164009255","https://openalex.org/W2165649321","https://openalex.org/W2166114772","https://openalex.org/W2168395296","https://openalex.org/W2546994163","https://openalex.org/W2550412208","https://openalex.org/W2610913990","https://openalex.org/W2962941774","https://openalex.org/W4253428995","https://openalex.org/W6603160583","https://openalex.org/W6606324823","https://openalex.org/W6607879274","https://openalex.org/W6636322051","https://openalex.org/W6639324668","https://openalex.org/W6639720801","https://openalex.org/W6640436931","https://openalex.org/W6670448442"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W4396696052"],"abstract_inverted_index":{"Many":[0],"systems":[1,17],"possess":[2],"the":[3,23,28,32,56,68,74,77,80,83,90,108,115,154,169,174,202],"flexibility":[4],"to":[5,47,213],"serve":[6],"requests":[7,33,95,125,167,203],"in":[8,79,96,201],"more":[9,48],"than":[10,50],"one":[11],"way,":[12],"such":[13,26],"as":[14],"distributed":[15],"storage":[16],"that":[18,143],"store":[19],"multiple":[20],"copies":[21,156],"of":[22,30,59,70,73,93,107,111,118,136,157,191],"data.":[24],"In":[25,99],"systems,":[27],"latency":[29,91,109],"serving":[31],"may":[34,44],"potentially":[35],"be":[36,45,161],"reduced":[37],"by":[38],"sending":[39,123],"redundant":[40,94,112,124,166],"requests:":[41],"a":[42,64],"request":[43,75],"sent":[46],"servers":[49,60],"needed":[51],"and":[52,135,152,189],"deemed":[53],"served":[54],"when":[55,144,153,177,184],"requisite":[57],"number":[58],"complete":[61],"service.":[62],"Such":[63],"mechanism":[65],"trades":[66],"off":[67],"possibility":[69],"faster":[71],"execution":[72],"with":[76,114],"increase":[78],"load":[81],"on":[82],"system.":[84],"Several":[85],"recent":[86],"works":[87],"empirically":[88],"evaluate":[89],"performance":[92,110],"diverse":[97],"settings.":[98],"this":[100],"paper,":[101],"we":[102],"perform":[103],"an":[104],"analytical":[105],"study":[106],"requests,":[113],"primary":[116],"goals":[117],"characterizing":[119],"under":[120,129,206],"what":[121,130],"scenarios":[122,131],"will":[126,133],"help":[127],"(and":[128],"it":[132],"not),":[134],"designing":[137],"optimal":[138,170,205],"redundant-requesting":[139],"policies.":[140],"We":[141],"show":[142],"service":[145,178,185],"times":[146,179,186],"are":[147,180,187,211],"i.i.d.":[148,181],"memoryless":[149,188],"or":[150,183],"\u201cheavier,\u201d":[151],"additional":[155],"already-completed":[158],"jobs":[159,192],"can":[160],"removed":[162],"instantly,":[163],"maximally":[164],"scheduling":[165],"achieves":[168],"average":[171],"latency.":[172],"On":[173],"other":[175],"hand,":[176],"\u201clighter\u201d":[182],"removal":[190],"is":[193,204],"not":[194,197],"instantaneous,":[195],"then":[196],"having":[198],"any":[199],"redundancy":[200],"high":[207],"loads.":[208],"Our":[209],"results":[210],"applicable":[212],"arbitrary":[214],"arrival":[215],"processes.":[216]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":17},{"year":2021,"cited_by_count":25},{"year":2020,"cited_by_count":19},{"year":2019,"cited_by_count":27},{"year":2018,"cited_by_count":16},{"year":2017,"cited_by_count":10},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":2}],"updated_date":"2026-08-11T07:18:39.950985","created_date":"2025-10-10T00:00:00"}
