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Ulawulo lweCandelo

Uphononongo lokuthelekisa izixhobo eziphathwayo ze microwave uArinst vs Anritsu

Papashwe ngomhla

Izibini zezixhobo ezivela kumphuhlisi waseRashiya "Kroks" zithunyelwe ukuphononongwa kovavanyo oluzimeleyo. Ezi ziimitha zerediyo zerediyo ezincinci, ezizezi: i-spectrum analyzer enejenereyitha yomqondiso eyakhelweyo, kunye ne-vector network analyzer (reflectometer). Zombini ezi zixhobo zinoluhlu oluya kuthi ga kwi-6,2 GHz kwindawo ephezulu. Bekukho umdla ekuqondeni ukuba ezi zezinye iipokotho “zokubonisa iimitha” (iithoyi), okanye izixhobo eziphawuleka ngokwenene, kuba umenzi uzibeke kwindawo yazo: […]

Inkqubo engavumelaniyo kwiJavaScript (Callback, Promise, RxJs)

Papashwe ngomhla

Molweni nonke. USergey Omelnitsky unxibelelana naye. Kungekudala ndibambe umsinga kwiprogram esebenzayo, apho ndathetha nge-asynchrony kwiJavaScript. Namhlanje ndingathanda ukuthatha amanqaku kulo mbandela. Kodwa ngaphambi kokuba siqalise umbandela oyintloko, kufuneka sibhale inqaku lentshayelelo. Ke masiqale ngeenkcazo: yintoni isitaki kunye nomgca? Isitaki yingqokelela izinto zayo [...]

Ukubuyisela emva: Ziye zacinywa njani iidilesi ze-IPv4

Papashwe ngomhla

UGeoff Huston, injineli eyintloko yophando kwirejistra ye-intanethi ye-APNIC, uqikelele ukuba iidilesi ze-IPv4 ziya kuphelelwa ngo-2020. Kuluhlu olutsha lwemathiriyeli, siya kuhlaziya ulwazi malunga nendlela iidilesi eziye zacinywa ngayo, ngoobani ababenazo, kwaye kutheni oku kwenzeke. / Unsplash / Loïc Mermilliod Kutheni iidilesi ziphela Phambi kokuba udlulele phambili kwibali lendlela idama “lokoma” ngayo […]

Uhlaselo lweCryptographic: ingcaciso yeengqondo ezibhidekileyo

Papashwe ngomhla

Xa usiva igama elithi "cryptography," abanye abantu bakhumbula igama eliyimfihlo le-WiFi, isitshixo esiluhlaza ecaleni kwedilesi yewebhusayithi abayithandayo, kunye nokuba kunzima kangakanani ukungena kwi-imeyile yomnye umntu. Abanye bakhumbula uthotho lobuthathaka kwiminyaka yamva nje ngokuxelela izifinyezo (DROWN, FREAK, POODLE...), iilogo ezinesitayile kunye nesilumkiso sokuhlaziya ngokukhawuleza isikhangeli sakho. I-Cryptography igubungela konke oku, kodwa inqaku lahlukile. Ingongoma kukho umgca ococekileyo phakathi [...]

Ubungakanani bezalathisi abufanelanga umzamo wethu

Papashwe ngomhla

Oku akunamsebenzi kwaphela, akuyomfuneko kwisicelo esisebenzayo, kodwa isithuba esincinci esihlekisayo malunga nabalawuli kwiinkqubo ze-*nix. Kungolwesihlanu. Ngexesha lodliwano-ndlebe, imibuzo enesithukuthezi ihlala ivela malunga ne-inodes, yonke into-iifayile, apho abantu abambalwa banokuphendula ngokufanelekileyo. Kodwa ukuba umba ubunzulu, unokufumana izinto ezinomdla. Ukuqonda isithuba, amanqaku ambalwa: yonke into ifayile. isilawuli kwakhona [...]

Ukusebenza kwamandla kwiofisi: indlela yokunciphisa ukusetyenziswa kwamandla okwenene?

Papashwe ngomhla

Sithetha kakhulu malunga nendlela amaziko edatha anokonga ngayo amandla ngokubekwa kwezixhobo ezihlakaniphileyo, i-air conditioning efanelekileyo, kunye nolawulo lwamandla oluphakathi. Namhlanje siza kuthetha malunga nendlela onokugcina ngayo amandla eofisini. Ngokungafani namaziko edatha, umbane kwiiofisi awufunwa kuphela ngeteknoloji, kodwa nakubantu. Ke ngoko, ukufumana i-coefficient ye-PUE apha […]

Iinkcukacha-manani zesayithi kunye neyakho indawo yokugcina encinci

Papashwe ngomhla

I-Webalizer kunye ne-Google Analytics ziye zandinceda ukuba ndiqonde okwenzekayo kwiiwebhusayithi iminyaka emininzi. Ngoku ndiyaqonda ukuba babonelela ngolwazi oluncinci kakhulu oluluncedo. Ukuba nofikelelo kwifayile yakho yofikelelo.log, ukuqonda izibalo kulula kakhulu kwaye uphumeze izixhobo ezisisiseko ezinje nge sqlite, html, ulwimi lwe sql kunye nasiphi na iskripthi […]

Uhambo kwiitoni eziluhlaza ezikhanyayo

Papashwe ngomhla

Eyona ngxaki ibalulekileyo yezothutho eSt. Petersburg ziibhulorho. Ebusuku, ngenxa yabo, kufuneka ubaleke kwi-tavern ngaphandle kokugqiba ibhiya yakho. Ewe, okanye uhlawule kabini iteksi njengesiqhelo. Ekuseni, bala ngokucokisekileyo ixesha ukwenzela ukuba nje ukuba ibhulorho ivaliwe, wenze ukuba kwisikhululo njengemongoose egugileyo. Asazi […]

Ngaba iKafka kwiKubernetes ilungile?

Papashwe ngomhla

Molo, Habr! Ngesinye isikhathi, saba ngabokuqala ukuzisa isihloko se-Kafka kwimarike yaseRashiya kwaye siqhubeke nokubeka iliso ekuphuhlisweni kwayo. Ngokukodwa, sifumene isihloko sokusebenzisana phakathi kweKafka kunye neKubernetes enomdla. Uphononongo (kwaye kunokuba lulumke) inqaku malunga nesi sihloko sapapashwa kwiBlog Confluent emva ngo-Okthobha kulo nyaka uphelileyo phantsi kombhali kaGwen Shapira. Namhlanje si […]

UDigest weVeki ePhakathi #3 (26 Jul - 2 Aug 2019)

Papashwe ngomhla

Abo bakulungeleyo ukuncama inkululeko yabo ukuze bakhuseleke okwexeshana engozini abayifanelanga inkululeko nokhuseleko. - UBenjamin Franklin Le digest ijolise ekunyuseni umdla woLuntu kumbandela wobumfihlo, ekukhanyeni kweziganeko zamva nje zisebenza ngakumbi kunanini na ngaphambili. Kwi-ajenda: Igunya lesatifikethi se-Medium Root CA lazisa uqinisekiso lwesatifikethi lisebenzisa i-OCSP protocol Iimpawu […]

Abafundi abahlanu kunye nabathathu basasaze iivenkile eziphambili zexabiso

Papashwe ngomhla

Okanye indlela esibhale ngayo umxhasi welayibrari ye-C ++ ye-ZooKeeper, etcd kunye ne-Consul KV Kwihlabathi leenkqubo ezisasazwayo, kukho inani lemisebenzi eqhelekileyo: ukugcina ulwazi malunga nokubunjwa kweqela, ukulawula ukucwangciswa kweengqungquthela, ukukhangela iindawo eziphosakeleyo, ukukhetha. inkokeli, nabanye. Ukusombulula ezi ngxaki, iinkqubo ezikhethekileyo ezisasazwayo zenziwe - iinkonzo zokulungelelanisa. Ngoku siza kuba nomdla kwezithathu kubo: ZooKeeper, […]

I-KVM (ngaphantsi) VDI enoomatshini abalahlwayo abasebenzisa i-bash

Papashwe ngomhla

Ngubani eli nqaku elijoliswe kulo? Intshayelelo Isebe lenkxaso ye-IT yenkampani eselula ephuhlayo enothungelwano oluncinci lwengingqi yacelwa ukuba iququzelele “izikhululo zokuzibonelela” ukuze zisetyenziswe ngabathengi bangaphandle. Ezi zikhululo bekufanele zisetyenziswe ekubhaliseni kwii-portals zangaphandle zenkampani, ukukhuphela [...]

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