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Kuenzanisa wongororo yeinotakurika microwave zvishandiso Arinst vs Anritsu

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Zvishandiso zviviri kubva kumugadziri weRussia "Kroks" zvakaendeswa kune yakazvimirira bvunzo kuongororwa. Aya ndiwo madiki maredhiyo frequency metres, anoti: spectrum analyzer ine yakavakirwa-mukati masaini jenareta, uye vector network analyzer (reflectometer). Maturusi ese ari maviri ane huwandu hunosvika 6,2 GHz mune yepamusoro frequency. Paive nechido chekunzwisisa kana aya angori imwe homwe "mamita ekuratidzira" (matoyi), kana zvishandiso zvinonyanya kukosha, nekuti mugadziri anozviisa: […]

Asynchronous programming muJavaScript (Callback, Promise, RxJs)

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Mhoroi mose. Sergey Omelnitsky ari kutaura. Nguva pfupi yapfuura ndakabata rukova pane reactive programming, kwandakataura nezve asynchrony muJavaScript. Nhasi ndinoda kutora manotsi pachinhu ichi. Asi tisati tatanga mashoko makuru, tinofanira kunyora mashoko okusuma. Saka ngatitangei netsananguro: chii chinonzi stack uye mutsara? A stack muunganidzwa une zvinhu [...]

Retrospective: sei IPv4 kero dzakapera

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Geoff Huston, mukuru wekutsvagisa injinjini painternet registrar APNIC, akafanotaura kuti IPv4 kero ichapera muna 2020. Munhevedzano itsva yezvishandiso, tichavandudza ruzivo rwekuti kero dzakapera sei, ndiani anga achiri nazvo, uye nei izvi zvaitika. / Unsplash / LoΓ―c Mermilliod Nei kero dziri kupera Usati waenda kunyaya yekuti dziva β€œrakapwa” sei […]

Cryptographic kurwisa: tsananguro yepfungwa dzakavhiringidzika

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Paunonzwa izwi rekuti "cryptography," vamwe vanhu vanoyeuka password yavo yeWiFi, padlock yegirinhi padyo nekero yewebhusaiti yavanofarira, uye kuti zvakaoma sei kupinda email yemumwe munhu. Vamwe vanorangarira nhevedzano yekusagadzikana mumakore achangopfuura nekuudza zvipfupiso (DROWN, FREAK, POODLE...), marogo anoyevedza uye yambiro yekukurumidza kugadzirisa browser yako. Cryptography inovhara zvese izvi, asi poindi yacho yakasiyana. Pfungwa ndeyokuti pane mutsara wakanaka pakati pe [...]

Saizi yemadhairekitori haina kukodzera kuedza kwedu

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Iyi haina basa zvachose, isingakodzeri mune inoshanda application, asi inosekesa diki positi nezve madhairekitori mu * nix masisitimu. Chishanu. Munguva yekubvunzurudza, mibvunzo inofinha inowanzomuka pamusoro peinodes, zvose-is-mafaira, izvo vanhu vashoma vanogona kupindura zvine musoro. Asi kana ukachera zvishoma, unogona kuwana zvinhu zvinonakidza. Kuti unzwisise positi, mashoma mapoinzi: zvese ifaira. dhairekitori zvakare [...]

Kushanda kwesimba muhofisi: nzira yekudzikisa chaiyo simba rekushandisa?

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Isu tinotaura zvakawanda pamusoro pekuti nzvimbo dzedata dzinogona sei kuchengetedza simba kuburikidza nekuiswa kwemidziyo yakangwara, yakakwana air conditioning, uye centralized power management. Nhasi tichataura pamusoro pekuti iwe unogona sei kuchengetedza simba muhofisi. Kusiyana nedata data, magetsi mumahofisi anodiwa kwete chete nehunyanzvi, asiwo nevanhu. Naizvozvo, kuwana PUE coefficient pano pa […]

Saiti statistics uye yako pachako diki yekuchengetedza

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Webalizer neGoogle Analytics zvakandibatsira kuwana nzwisiso yezviri kuitika pamawebhusaiti kwemakore mazhinji. Zvino ndinonzwisisa kuti vanopa ruzivo rushoma runobatsira. Kuve nekuwana yako access.log faira, kunzwisisa manhamba kuri nyore uye kushandisa maturusi ekutanga akadai se sqlite, html, mutauro we sql uye chero chinyorwa […]

Kafka paKubernetes yakanaka here?

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Kwaziwai, Habr! Pane imwe nguva, isu takanga tiri vekutanga kuunza Kafka musoro kumusika weRussia uye kuenderera mberi nekutarisa kukura kwayo. Kunyanya, takawana nyaya yekudyidzana pakati peKafka naKubernetes inonakidza. Ongororo (uye kungwarira) chinyorwa pane iyi chinyorwa chakaburitswa paConfluent blog muna Gumiguru gore rapfuura, rakanyorwa naGwen Shapira. Nhasi isu […]

Excursion in light green tones

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Dambudziko guru rekufambisa muSt. Petersburg mabhiriji. Husiku, nekuda kwavo, iwe unofanirwa kutiza kubva kune tavern usina kupedza doro rako. Zvakanaka, kana kubhadhara zvakapetwa kaviri kune tekisi semazuva ese. Mangwanani, nyatsoverenga nguva kuitira kuti kana zambuko ravharwa, iwe unoenda kuchiteshi senge nimble mongoose. Isu hatidi […]

Pakati Pevhiki Digest #3 (26 Jul - 2 Aug 2019)

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Vaya vanoda kurega rusununguko rwavo kuti vawane dziviriro yenguva pfupi pangozi havakodzeri rusununguko kana kuchengeteka. - Benjamin Franklin Iyi digest inoitirwa kuwedzera kufarira kweNharaunda panyaya yekuvanzika, iyo muchiedza chezvinoitika zvichangoburwa iri kuve yakakosha kupfuura nakare kose. Pachirongwa: Iyo Medium Root CA certification chiremera inosuma chitupa chekuongorora vachishandisa OCSP protocol Zvimiro […]

Vadzidzi vashanu uye vatatu vakagovera zvitoro zvakakosha

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Kana kuti manyorero atakaita mutengi C++ raibhurari yeZooKeeper, etcd uye Consul KV Munyika yemasisitimu akagoverwa, kune akati wandei emabasa akajairwa: kuchengetedza ruzivo nezve kuumbwa kwesumbu, kugadzirisa magadzirirwo emanodhi, kuona isina kukwana node, kusarudza. mutungamiri, nevamwe. Kugadzirisa matambudziko aya, masisitimu akasarudzika akagoverwa akagadzirwa - masevhisi ekubatanidza. Iye zvino tichafarira vatatu vavo: ZooKeeper, […]

Polycom VhidhiyoConference Solutions. Memories 6 years later... Stage 2. Part 1. RMX1500

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Masikati akanaka, vashandi. Pakupedzisira, nguva yasvika yokuzadzika chipikirwa uye kutaura kuti chakapfuurira sei uye chakaguma sei. Ndinokumbira ruregerero nekunonoka. Pachave nezvikamu zviviri: RMX2 CMA1500 Chinyorwa chiri pasi apa chichava netsamba dzakawanda uye chinogona kukonzera kuongororwa kwakashata kwemaitiro angu kune iyi sarudzo. Mukupedzisa, ini ndicharatidza kuti ndine hunhu uye hwakanaka kune Polycom, […]

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