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Kuwunikanso kofananiza kwa zida zam'manja za microwave Arinst vs Anritsu

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Zida ziwiri zochokera kwa wopanga waku Russia "Kroks" zatumizidwa kuti ziwunikidwe pawokha. Awa ndi mamita ang'onoang'ono a ma radio frequency metres, omwe ndi: chowunikira ma sipekitiramu okhala ndi jenereta yolowera mkati, ndi makina owunikira vekitala (reflectometer). Zida zonse ziwirizi zimakhala ndi ma frequency mpaka 6,2 GHz pama frequency apamwamba. Panali chidwi chomvetsetsa ngati awa ndi "mamita owonetsera" (zoseweretsa), kapena zida zodziwika bwino, chifukwa wopanga amaziyika: […]

Mapulogalamu asynchronous mu JavaScript (Callback, Promise, RxJs)

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Moni nonse. SERGEY Omelnitsky akulankhula. Osati kale kwambiri ndidakhala ndi mtsinje pamapulogalamu okhazikika, pomwe ndidalankhula za asynchrony mu JavaScript. Lero ndikufuna kulemba zolemba pa nkhaniyi. Koma tisanayambe nkhani yaikulu, tiyenera kulemba mawu oyamba. Ndiye tiyeni tiyambe ndi matanthauzo: kodi stack ndi mzere? Stack ndi gulu lomwe zinthu zake [...]

Kuyang'ana m'mbuyo: momwe ma adilesi a IPv4 adathetsedwa

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Geoff Huston, injiniya wamkulu wofufuza pa intaneti APNIC, adaneneratu kuti ma adilesi a IPv4 adzatha mu 2020. Pamndandanda watsopano wazinthu, tisintha zambiri za momwe ma adilesi adatsikira, omwe anali nawobe, komanso chifukwa chomwe izi zidachitikira. / Unsplash / LoΓ―c Mermilliod Chifukwa chiyani maadiresi akutha Ndisanapitirire ku nkhani ya momwe dziwe "linauma" [...]

Kuukira kwa Cryptographic: kufotokozera kwamalingaliro osokonezeka

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Mukamva mawu oti "cryptography," anthu ena amakumbukira mawu achinsinsi a WiFi, loko yobiriwira pafupi ndi adilesi ya tsamba lawo lomwe amakonda, komanso momwe zimavutira kulowa imelo ya munthu wina. Ena amakumbukira zovuta zingapo m'zaka zaposachedwa ndi mawu achidule (DROWN, FREAK, POODLE...), ma logo okongola komanso chenjezo loti musinthe msakatuli wanu mwachangu. Cryptography imaphimba zonsezi, koma mfundo ndi yosiyana. Mfundo ndi yakuti pali mzere wabwino pakati pa [...]

Kukula kwa maulalo sikoyenera kuyesetsa kwathu

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Izi ndizopanda pake, zosafunikira pakugwiritsa ntchito, koma zoseketsa pang'ono za zolemba mu * nix system. Ndi Lachisanu. Pamafunso, mafunso otopetsa nthawi zambiri amawuka okhudza ma inode, chilichonse-ndi-mafayilo, omwe anthu ochepa amatha kuyankha mwanzeru. Koma ngati mutakumba mozama, mungapeze zinthu zosangalatsa. Kuti mumvetse positi, mfundo zingapo: chirichonse ndi fayilo. directory ndi [...]

Kugwiritsa ntchito mphamvu muofesi: momwe mungachepetsere mphamvu zenizeni?

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Timalankhula zambiri za momwe malo opangira ma data angasungire mphamvu kudzera pakuyika zida mwanzeru, mpweya wabwino kwambiri, komanso kasamalidwe ka mphamvu pakati. Lero tikambirana momwe mungasungire mphamvu muofesi. Mosiyana ndi malo opangira deta, magetsi m'maofesi amafunikira osati ndi luso lamakono, komanso ndi anthu. Chifukwa chake, kuti mupeze coefficient ya PUE pano pa […]

Ziwerengero zapatsamba ndi malo anu ochepa osungira

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Webalizer ndi Google Analytics zandithandiza kudziwa zomwe zikuchitika pamasamba kwa zaka zambiri. Tsopano ndikumvetsetsa kuti amapereka zambiri zothandiza. Kukhala ndi mwayi wopeza fayilo yanu ya access.log, kumvetsetsa ziwerengero ndikosavuta komanso kugwiritsa ntchito zida zofunika kwambiri monga sqlite, html, chilankhulo cha sql ndi zolemba zilizonse […]

Kuyenda mu malankhulidwe obiriwira owala

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Vuto lalikulu kwambiri lamayendedwe ku St. Petersburg ndi milatho. Usiku, chifukwa cha iwo, muyenera kuthawa malo ogona osamaliza mowa wanu. Chabwino, kapena lipirani kuwirikiza kawiri pa taxi monga mwanthawi zonse. M'mawa, werengerani nthawi mosamala kuti mlathowo ukangotsekedwa, mumapita ku siteshoni ngati mongoose wothamanga. Sitinatero […]

Kodi Kafka pa Kubernetes ndi yabwino?

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Moni, Habr! Panthawi ina, tinali oyamba kuyambitsa mutu wa Kafka kumsika wa Russia ndikupitiriza kuyang'anira chitukuko chake. Makamaka, tidapeza mutu wakuyanjana pakati pa Kafka ndi Kubernetes wosangalatsa. Ndemanga (komanso yosamala) pamutuwu idasindikizidwa pa Confluent blog mu Okutobala chaka chatha motsogozedwa ndi Gwen Shapira. Lero ife […]

Digest Yapakatikati #3 (26 Jul - 2 Aug 2019)

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Anthu amene amalolera kusiya ufulu wawo kuti atetezedwe kwakanthawi kochepa ku ngozi samayenera kukhala ndi ufulu kapena chitetezo. - Benjamin Franklin Digest iyi ikufuna kuwonjezera chidwi cha Community pa nkhani yachinsinsi, yomwe malinga ndi zochitika zaposachedwa ikukhala yofunika kwambiri kuposa kale lonse. Pazokambirana: Ulamuliro wa certification wa Medium Root CA umayambitsa chitsimikiziro cha satifiketi pogwiritsa ntchito OCSP protocol Features […]

Ophunzira asanu ndi atatu adagawira masitolo ofunika kwambiri

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Kapena momwe tidalembera laibulale yamakasitomala ya C ++ ya ZooKeeper, etcd ndi Consul KV M'dziko la machitidwe ogawidwa, pali ntchito zingapo zomwe zimachitika: kusunga zidziwitso za kapangidwe ka gulu, kuyang'anira kasinthidwe ka node, kuzindikira malo olakwika, kusankha. mtsogoleri, ndi ena. Kuti athetse mavutowa, machitidwe apadera ogawidwa apangidwa - ntchito zogwirizanitsa. Tsopano tikhala ndi chidwi ndi atatu mwa iwo: ZooKeeper, […]

KVM (pansi) VDI yokhala ndi makina otayika omwe amagwiritsa ntchito bash

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Nkhaniyi ingakhale yosangalatsa kwa oyang'anira madongosolo omwe adakumana ndi ntchito yopanga ntchito zanthawi imodzi. Prologue Dipatimenti yothandizira IT ya kampani yachichepere yomwe ikukula mwachangu yokhala ndi netiweki yaying'ono yachigawo idafunsidwa kuti ikonzekere "malo odzichitira okha" kuti agwiritsidwe ntchito ndi makasitomala awo akunja. Masiteshoniwa amayenera kugwiritsidwa ntchito polembetsa pazipata zakunja za kampaniyo, kutsitsa [...]

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