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Gudanarwa na rukuni

Binciken kwatankwacin na'urorin microwave masu ɗaukar nauyi Arinst vs Anritsu

Aka buga a

An ƙaddamar da na'urori biyu daga mai haɓakawa na Rasha "Kroks" don nazarin gwaji mai zaman kansa. Waɗannan ƙananan mitoci ne na mitar rediyo, wato: na'urar tantancewa tare da ginannen siginar sigina, da na'urar tantance hanyar sadarwa ta vector (reflectometer). Duk na'urorin biyu suna da kewayon har zuwa 6,2 GHz a cikin mitar babba. Akwai sha'awar fahimtar ko waɗannan kawai wani aljihu ne "mitocin nuni" (kayan wasa), ko na'urori masu mahimmanci na gaske, saboda masana'anta sun sanya su: […]

Shirye-shiryen Asynchronous a cikin JavaScript (Kira, Alƙawari, RxJs)

Aka buga a

Assalamu alaikum. Sergey Omelnitsky yana magana da shi. Ba da dadewa ba na dauki nauyin rafi akan shirye-shiryen amsawa, inda na yi magana game da asynchrony a JavaScript. A yau ina so in yi bayanin kula akan wannan kayan. Amma kafin mu fara babban abu, muna buƙatar yin bayanin gabatarwa. Don haka bari mu fara da ma'anoni: menene tari da jerin gwano? Tari shine tarin wanda abubuwansa [...]

Tuna baya: yadda adiresoshin IPv4 suka ƙare

Aka buga a

Geoff Huston, babban injiniyan bincike a intanet mai rejista APNIC, ya annabta cewa adiresoshin IPv4 za su ƙare a cikin 2020. A cikin sabon jerin kayan, za mu sabunta bayanai game da yadda adiresoshin suka ƙare, waɗanda har yanzu suke da su, da dalilin da ya sa hakan ya faru. / Unsplash / Loïc Mermilliod Me yasa adiresoshin ke gudana Kafin ci gaba zuwa labarin yadda tafkin "ya bushe" [...]

Harin Cryptographic: bayani ga ruɗewar zukatan

Aka buga a

Lokacin da kuka ji kalmar "cryptography," wasu mutane suna tunawa da kalmar sirri ta WiFi, koren makullin kusa da adireshin gidan yanar gizon da suka fi so, da kuma yadda yake da wuya a shiga imel ɗin wani. Wasu suna tunawa da jerin lahani a cikin 'yan shekarun nan tare da gajarta (DROWN, FREAK, POODLE...), tambura masu salo da gargaɗi don sabunta burauzar ku cikin gaggawa. Cryptography ya ƙunshi duk waɗannan, amma batun ya bambanta. Ma'anar ita ce akwai layi mai kyau tsakanin [...]

Girman kundayen adireshi bai cancanci ƙoƙarinmu ba

Aka buga a

Wannan cikakken mara amfani ne, mara amfani a aikace-aikace mai amfani, amma ɗan ƙaramin rubutu mai ban dariya game da kundayen adireshi a cikin tsarin nix. Yau Juma'a. A lokacin tambayoyi, tambayoyi masu ban sha'awa sukan taso game da inodes, komai-fayiloli ne, waɗanda mutane kaɗan za su iya amsawa cikin hankali. Amma idan ka yi zurfi kadan, za ka iya samun abubuwa masu ban sha'awa. Don fahimtar sakon, akwai wasu maki: duk abin da fayil ne. littafin adireshi kuma [...]

Amfanin makamashi a cikin ofishin: yadda za a rage yawan amfani da makamashi?

Aka buga a

Muna magana da yawa game da yadda cibiyoyin bayanai za su iya adana makamashi ta hanyar sanya kayan aiki masu wayo, ingantacciyar kwandishan, da sarrafa wutar lantarki ta tsakiya. Yau za mu yi magana game da yadda za ku iya ajiye makamashi a ofis. Ba kamar cibiyoyin bayanai ba, ana buƙatar wutar lantarki a ofisoshin ba kawai ta hanyar fasaha ba, har ma da mutane. Don haka, don samun ƙimar PUE anan a […]

Ƙididdiga na rukunin yanar gizon da ƙananan ma'ajiyar ku

Aka buga a

Webalizer da Google Analytics sun taimaka mini in sami haske game da abubuwan da ke faruwa a gidajen yanar gizon shekaru da yawa. Yanzu na fahimci cewa suna ba da bayanai masu amfani kaɗan kaɗan. Samun damar shiga fayil ɗin access.log ɗin ku, fahimtar ƙididdiga yana da sauƙi kuma don aiwatar da ainihin kayan aikin kamar su sqlite, html, harshen sql da kowane rubutun […]

Shin Kafka akan Kubernetes yana da kyau?

Aka buga a

Gaisuwa, Habr! A wani lokaci, mu ne farkon wanda ya gabatar da batun Kafka ga kasuwar Rasha kuma mu ci gaba da sa ido kan ci gabanta. Musamman, mun sami batun hulɗar tsakanin Kafka da Kubernetes mai ban sha'awa. An buga labarin bita (kuma a hankali) game da wannan batu a kan shafin yanar gizon Confluent a watan Oktoban bara a ƙarƙashin marubucin Gwen Shapira. A yau mun […]

Balaguro cikin haske kore sautunan

Aka buga a

Mafi mahimmancin matsalar sufuri a St. Petersburg shine gadoji. Da daddare, saboda su, dole ne ku gudu daga gidan abinci ba tare da gama giyar ku ba. To, ko kuma ku biya kuɗin tasi sau biyu kamar yadda aka saba. Da safe sai a lissafta lokacin a hankali domin da zarar an rufe gadar, sai ku kai tashar kamar Mongoose. Ba mu […]

Matsakaicin Digest na mako-mako #3 (26 ga Yuli - 2 ga Agusta 2019)

Aka buga a

Waɗanda suke shirye su ba da ’yancinsu don samun kariya ta ɗan gajeren lokaci daga haɗari ba su cancanci ’yanci ko aminci ba. - Benjamin Franklin An yi niyya ne don ƙara sha'awar Al'umma game da batun sirri, wanda bisa la'akari da abubuwan da suka faru na baya-bayan nan suna zama mafi dacewa fiye da kowane lokaci. A kan ajanda: Matsakaici Tushen CA takardar shaida ikon gabatar da takaddun shaida ta amfani da Features na OCSP […]

Dalibai biyar da manyan shagunan ƙima guda uku sun rarraba

Aka buga a

Ko kuma yadda muka rubuta ɗakin karatu na C ++ abokin ciniki don ZooKeeper, da dai sauransu da kuma Consul KV A cikin duniyar da aka rarraba tsarin, akwai ayyuka da yawa na al'ada: adana bayanai game da abun da ke cikin gungu, sarrafa tsarin nodes, gano kuskuren nodes, zabar. shugaba, da sauransu. Don magance waɗannan matsalolin, an ƙirƙiri tsarin rarraba na musamman - sabis na haɗin gwiwa. Yanzu za mu yi sha'awar uku daga cikinsu: ZooKeeper, […]

KVM (ƙarƙashin) VDI tare da injunan ƙira ta amfani da bash

Aka buga a

Wanene aka yi nufin wannan labarin? Wannan labarin na iya zama abin sha'awa ga masu gudanar da tsarin waɗanda suka fuskanci aikin ƙirƙirar sabis na ayyukan "lokaci ɗaya". Gabatarwa Sashen tallafi na IT na wani ƙaramin kamfani mai tasowa mai ƙarfi tare da ƙaramin hanyar sadarwa na yanki an nemi su tsara “tashoshin sabis na kai” don amfani da abokan cinikinsu na waje. Ya kamata a yi amfani da waɗannan tashoshi don yin rajista a kan tashoshin kamfanoni na waje, zazzage [...]

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