AmakhompiyuthaIsofthiwe

Iyini isilondolozi? Isilondolozi kusiphequluli kungani udinga ukuhlanza?

Ubuchwepheshe bezokwaziswa buhluke kakhulu, kepha inhloso yabanye kunzima kakhulu ukuyiqonda. Thatha, isibonelo, isilondolozi - kuyini? Kungani kwenziwa? Ingabe kukhona ukuqonda kulokhu? Yebo, uma ufunda le migqa, kunomqondo, awukwazi nje okwamanje. Futhi ngaphakathi kohlaka lwesihloko lokhu kuhlukumeza kuzolungiswa.

Iyini isilondolozi?

Kuqondwa njenge-buffer ephakathi, okuqukethe imininingwane okungenzeka ukuthi umbuzo uyona ophakeme kakhulu, ngokuhlinzekwa kwayo okusheshayo kumsebenzisi wekhompyutha. Ukufinyelela kwedatha edingekayo kuyashesha kunokuba ufinyelele kumthombo ode noma isampuli kusuka kumthombo wememori ohamba kancane. Kodwa ukuphazamiseka kwe-cache yiqiniso lokuthi linamazinga amancane, okwenza kube nzima ukugcina ulwazi oluningi kulo.

Lolu buchwepheshe busebenza kanjani?

Manje ukuthi uyazi ukuthi iyiphi i-cache, kufanele ukhulume ngedivayisi. Izinto ezisisekelo ze-cache zenziwe ngamasethi erekhodi. Isethi ngayinye ihlotshaniswa ne-block ethize noma isici sedatha, okuyikhophi yolwazi olusekumemori main. Irekhodi ngalinye linesihlonzi sayo siqu (futhi ngezinye izikhathi sibizwa ngokuthi ithegi), lapho uxhumano phakathi kwedatha "yasekuqaleni" kwimemori eyinhloko futhi "ikhophi" esilondolozweni igcinwa. Iklayenti ibhekisela kulo, okungaba uhlelo lokusebenza, isiphequluli noma i-CPU. Uma ufinyelela into yokucela, ikhompyutha kuqala ihlola imemori yokugcina. Uma ukufaniswa kwezihlonzi kutholakala, khona-ke idatha esuka kuyo isetshenziswa, futhi inqubo ngokwayo ibizwa ngokuthi hit. Uma ulwazi oludingekile lungatholakali, imemori enkulu iqala ukulayishwa. Le nqubo ibizwa ngokuthi i-cache miss. Iphesenti yokufinyelela kuyo, lapho impendulo edingekayo yamukelwa, ibizwa ngokuthi i-hit ratio.

Njengoba kunikezwe ubungako obulinganiselwe ukuthi isilondolozi sinakho, isinqumo singenziwa ukuze kukhishwe olunye ulwazi. Ngenxa yokwamukelwa kwayo, kusetshenziselwa izinqubo ezihlukahlukene ze-branching algorithms. Uma ushintshe izinto ezigcinwe ku-cache, izinguquko zizokwenziwa kwimemori eyinhloko yekhompyutha. Inqubomgomo yokubhala ithinta ijubane lokungena kwedatha. Ngakho-ke, ngokukhetha okuphuthumayo, zonke izinguquko zizokwenziwa ngokuvumelanisa kwimemori enkulu. Ngokubhala okurekhodiwe (noma okuphindaphindiwe), idatha ishintshwe kuphela uma ikhutshwe ku-cache ngezinye izakhi. Le ndlela isetshenziswa kanjani ezingxenyeni ezingenhla zobuchwepheshe? Ake sibuke ukuthi iyiphi i-cache, nokuthi ixhumana kanjani nezinye izingxenye zekhompyutha.

Isilondolozi ohlelweni lokusebenza lwe-PC

Okubaluleke nakakhulu i-Windows cache - isitoreji sesikhashana sesistimu yokusebenza (noma enye uma efakwe kwikhompyutha yakho). Iqukethe izakhi ezilandelayo:

  1. Amakhasi we-RAM, okubuye ahlukaniswe abe ama-buffers, ubude obulinganayo futhi buxhomeke kwimishini yememori esetshenzisiwe.
  2. Iqoqo lezinhloko ze-buffers ngokwabo, umsebenzi wabo ukuchaza isimo sabo.
  3. Amatafula we-Hash, okukhombisa ukuthi yiliphi ikhanda okuyilokho okungeyona i-buffer.
  4. Uhla lwezinto zokungena mahhala.

Izinhlelo ze-Cache

Izinhlelo eziningi kudingeka zirekhode izibalo zazo eziphakathi ukugwema isidingo sokubala isikhathi ngasinye. Futhi, njengoba usuqagele kakade, basebenzisa i-cache. Lolu hlelo luzuzisa kulokhu, ngoba lukuvumela ukuba usebenze ngokuphawulekayo umsebenzi walo futhi wenze zonke izibalo ezidingekayo, kodwa kuphela uma kukhona i-RAM eyengeziwe noma isikhala sediski samahhala. Kuzo zonke ezinye izimo, i-cache ngeke ikwazi ukukusiza uzizwe izinzuzo zomsebenzi wayo. Kodwa ungathukutheli - le nkulumo isebenza kuphela kwisitoreji sedatha, kunoma yikuphi - bheka kumphathi wemisebenzi, futhi uzokwazi ukubona ukuthi enye yememori ifihlwe.

Isilondolozi sesiphequluli

Unganciphisa kanjani ithrafikhi edluliselwa phezu kwenethiwekhi? Lapha imemori ye-cache ibuyele ekusizeni futhi! Kuyo, ikhompyutha yomsebenzisi noma amaseva we-proxy esitolo sezingxenye zolwazi olusetshenziswa emakhasini eziphequluli. Ngokuvamile, i-protocol ye-HTTP inesibopho sokungena ulwazi kwimemori yokugcinwa kwemfihlo nokuyisebenzisa. Kodwa kwezinye izimo, umsebenzi walo ungathatha isistimu yokuphatha isayithi, manje engumsebenzisi. Ukungahleleki kohlelo lonke ukuthi izinguquko ezenziwe kwisiphequluli esisodwa azihlali njalo noma zingabonakali ngokushesha kwenye. Ikakhulukazi ayisebenzi kumapulatifomu eselula. Okulandelayo, uzofunda ukuthi ungayifaka kanjani i-"Android", futhi ungaqonda ukuthi kungani lesi sici singasebenzi.

Ukusula i-cache yesiphequluli

Izici ze-cache kusiphequluli nazo zivela eqinisweni ukuthi kufanele zihlanzwe ngezikhathi ezithile. Iqiniso liwukuthi le nkumbulo ngokwayo ikhulu kakhulu, futhi ngaphezu kwalokho isalondoloza idatha engalungile ukucubungula. Ngakho-ke, ngezikhathi ezithile, ngeke kube buhlungu ukuhlanza isilondolozi sesiphequluli. Ngaphezu kwalokho, le ndlela iyalulekwa ngisho noma kunezinkinga zokulayisha idatha entsha noma amaphutha amasonto avame kakhulu. Kuziphequluli eziningi, ukuhlanza isilondolozi akuyona inqubo enzima, futhi ungayenza ngemizuzwana embalwa. Lokhu kungokwemvelo ukuthi ngisho nangencazelo ejwayelekile ungenza konke okudingayo, kungakhathaliseki ukuthi yini into yokuhlanza: isilondolozi "ku-Mozile" noma "i-Internet Explorer." Ukuze uyisuse, udinga ukuhamba ngamaphuzu alandelayo:

  1. Chofoza manje kumenyu yezilungiselelo.
  2. Khetha inkinobho yomlando. Uma kungekho - "Izilungiselelo zomsebenzisi", futhi sekuvele "Umlando" noma "Amakhukhi".
  3. Ngaphambi kokuba ube yimenyu ongakhetha ngayo ukuthi yimaphi idatha ofuna ukusula nokuthi yiphi isikhathi. Yenza izilungiselelo ngokwakho.
  4. Chofoza inkinobho ethi "Sula".

Isixwayiso esincane: yonke idatha oyikhethayo izosuswa. Ngokuzenzakalelayo, konke kususwa, kufaka phakathi amafomu okuzenzekelayo namaphasiwedi wezingosi ezahlukene. Ngakho uma usetshenziselwa ukugcwalisa ukungena kwakho nephasiwedi usebenzisa usizo lwe -pop-up noma ungakhumbuli iphasiwedi kumasayithi ovame ukuvakashela, udinga ukuqinisekisa ukuthi ungakwazi ukufinyelela ngaleso sikhathi.

Isilondolozi esiteshini seselula

Sithole ukuthi yimaphi ama-caches asekhompyutheni yomuntu siqu. Futhi manje kuya engavamile kakhulu - kanjani izinto ezinememori yokugcinwa kwamakhompiyutha kumapulatifomu eselula. Ngokuvamile, singasho ukuthi indlela yokuqalisa ifana neyasetshenziswa kumakhompyutha, kodwa ngokulinganiselwa kwayo, okulinganiselwe ukulinganiselwa kwe-hardware yamafoni, ama-smartphone namaphilisi. Ngakho-ke, isitolo sedatha sinamabanga amancane, isiza esingaphansi kweziphequluli futhi ngokuvamile asiqapheli kunokuba isebenze nekhompyutha. Nakuba kungenzeka ukutshela futhi eminye imininingwane, usebenzisa njengesibonelo se-Android-cache. Thatha ifayela nge-extension .akr bese uchofoza inkinobho ethi "Faka". Kufolda lapho izofakwa khona, kuyoba nefolda eyodwa eqala ngo-com, futhi iphele negama lenhlelo. Lokhu kugcinwa kwedatha yesikhashana, noma imemori yokugcinwa kwekhompiyutha yohlelo oluhlukile. Nansi indlela yokufaka isilondolozi ku-"Android" - awudingi ukwenza lutho ngaphandle kokuchofoza okumbalwa.

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