Wata sabuwa dabarar da aka yi amfani da ita don gano wani misali na mai bincike. Hanyar ya dogara ne da siffofin sarrafa hoto na Favicon tare da taimakon abin da rukunin yanar gizon yake tantance gumakan da ake nunawa a cikin alamomin, shafuka da sauran abubuwa na mashigar burauzan.
Masu bincike suna adana hotunan Favicon a cikin maɓallin keɓaɓɓe, wanda baya haɗuwa tare da sauran ɗakunan ajiya, ya zama gama gari ga duk hanyoyin aiki, kuma ba'a share shi ta hanyar ma'ajin ma'auni da masu tsabtace tarihin bincike.
Wannan aikin ba da damar amfani da mai ganowa koda lokacin aiki a yanayin ɓoye-ɓoye da kuma yana da wuya a cire. Tabbatarwa ta amfani da hanyar da aka kirkira kuma baya shafar amfani da VPNs da plugins na ad-blocking.
Hanyar ganewa ta dogara ne akan gaskiyar cewa a gefen sabar yana yiwuwa a tantance ko mai amfani ya buɗe shafin a baya ta hanyar nazarin bayanan game da kayan Favicon idan mai binciken bai nemi hoton Favicon da aka kayyade a cikin sigogin shafin ba , to, an ɗora shafin a baya kuma hoton yana nunawa daga ma'ajin.
Tunda lMasu bincike suna baka damar saita Favicon naka ga kowane shafi, za a iya shigar da bayanai masu amfani ta hanyar tura su ta kai tsaye daga mai amfani zuwa shafuka daban daban na musamman.
Thearin turawa a cikin sarkar, za a iya ƙayyade masu ganowa (adadin masu ganowa yana ƙaddara ta hanyar dabara ta 2 ^ N, inda N shine lambar turawa). Misali, masu amfani da 4 zasu iya magance turawa sau biyu, 3 - 8, 4 - 16, 10 - 1024, 24 - 16 miliyan, 32 - 4 biliyan.
Rashin fa'idar wannan hanya ita ce dogon jinkiri- Mafi girman daidaito, tsawon lokacin da yake daukar wajan turawa don bude shafin.
Sake turawa suna samarda masu ganowa ga duk masu amfani da Intanet, amma suna haifar da jinkiri na kimanin daƙiƙa uku. Don masu gano miliyan, jinkirin ya kai kimanin dakika ɗaya da rabi.
Hanyar ta ƙunshi aiki a cikin hanyoyi biyu: rubutawa da karatu:
- Yanayin rubutu kerawa da adana mai ganowa ga mai amfani wanda ya fara shiga shafin.
- Yanayin karatu karanta mai ganowa da aka adana a baya
Zaɓin yanayin ya dogara da buƙatar fayil ɗin Favicon don babban shafin yanar gizon: idan ana buƙatar hoto, ba a adana bayanan ba kuma ana iya ɗauka cewa mai amfani bai sami damar shiga shafin ba ko kuma an ɓoye abun ciki . m. A cewar masu binciken, ta hanyar tantance taken HTTP Cache-Control, zai yiwu a cimma Favicon a cikin ma'ajin har zuwa shekara guda.
A cikin yanayin karantawa, lokacin buɗe shafin, mai amfani yana ɗaure da sarƙaƙƙiyar shafuka tare da Favicons ɗin su kuma HTTP uwar garken parses wanda Favicons ake nema daga uwar garken kuma ana nuna hakan ba tare da samun damar sabar daga cache ba. Kasancewar buƙatun an yi masa lamba "0" kuma rashi azaman "1". Domin a adana mai ganowa a cikin kira na gaba, ana nuna lambar kuskure 404 a matsayin amsa ga buƙatun Favicon, ma'ana, lokaci na gaba da za ku buɗe shafin, mai binciken zai yi ƙoƙarin loda waɗannan favicons ɗin kuma.
A cikin yanayin rubutu, a cikin maɓallin turawa ga shafuka masu rufa "1", an dawo da amsar Favicon daidai, da aka ajiye a cikin maɓallin bincike (lokacin da aka sake maimaita sake zagayowar, za a dawo da bayanan Favicon daga ɓoye, ba tare da samun damar uwar garken ba), kuma don shafukan da ke sanya "0" - lambar kuskure 404 (idan kun maimaita sake zagayowar, bayanan shafi za a sake nema).
Hanyar tana aiki a cikin Chrome, Safari, Edge kuma wani ɓangare a Firefox. A cikin Firefox na Linux, yin amfani da Favicons azaman Supercookies yana fuskantar matsala ta hanyar fasalin da ke hana mai binciken daga ɓoye Favicon.
Abin sha'awa, marubutan hanyar tabbatarwa sun sanar da masu haɓaka Firefox game da wannan fasalin kimanin shekara guda da ta gabata, suna lura cewa akwai kuskure a cikin ɓoye, amma ba ambaci aikinsu ba kuma cewa gyara kuskuren zai haifar da yiwuwar gano mai amfani.
Source: https://www.cs.uic.edu