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Ukubuyekezwa okuqhathanisayo kwamadivayisi we-microwave ephathekayo u-Arinst vs Anritsu

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Ipheya lamadivayisi asuka kunjiniyela wase-Russian "Kroks" athunyelwe ukuze abuyekezwe ukuhlolwa okuzimele. Lawa amamitha amafrikhwensi omsakazo amancane, okungukuthi: i-spectrum analyzer ene-generator yesignali eyakhelwe ngaphakathi, kanye ne-vector network analyzer (reflectometer). Zombili izisetshenziswa zinebanga elingafika ku-6,2 GHz kumafrikhwensi aphezulu. Kube nesithakazelo ekuqondeni ukuthi lawa amanye nje “amamitha okubonisa” (amathoyizi), noma izinto eziphawuleka ngempela, ngoba umenzi uwabeka endaweni: […]

Izinhlelo ezi-Asynchronous ku-JavaScript (Callback, Promise, RxJs)

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Sanibonani nonke. U-Sergey Omelnitsky uyaxhumana. Esikhathini esingeside esidlule ngibambe ukusakazwa kwezinhlelo ezisebenzayo, lapho ngikhulume khona nge-asynchrony ku-JavaScript. Namuhla ngithanda ukubhala amanothi ngale ndaba. Kodwa ngaphambi kokuba siqale indaba eyinhloko, kudingeka senze isethulo. Ngakho-ke ake siqale ngezincazelo: yini isitaki nomugqa? Isitaki siyiqoqo elinezici zalo [...]

I-Retrospective: ukuthi amakheli e-IPv4 aqedwa kanjani

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UGeoff Huston, unjiniyela omkhulu wocwaningo kwa-inthanethi obhalisa i-APNIC, ubikezele ukuthi amakheli e-IPv4 azophela ngo-2020. Ochungechungeni olusha lwezinto zokwakha, sizobuyekeza ulwazi mayelana nokuthi amakheli aqedwe kanjani, obani ababenawo, nokuthi kungani lokhu kwenzeke. / Unsplash / Loïc Mermilliod Kungani amakheli ephela Ngaphambi kokudlulela endabeni yokuthi ichibi “lokoma” kanjani […]

Ukuhlaselwa kwe-Cryptographic: incazelo yezingqondo ezididekile

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Uma uzwa igama elithi “cryptography,” abanye abantu bakhumbula iphasiwedi yabo ye-Wi-Fi, ilokhi eluhlaza eduze kwekheli lewebhusayithi yabo abayintandokazi, nokuthi kunzima kangakanani ukungena ku-imeyili yomunye umuntu. Abanye bakhumbula uchungechunge lobungozi eminyakeni yakamuva ngezifinyezo ezishoyo (DROWN, FREAK, POODLE...), amalogo asesitayeleni kanye nesixwayiso sokubuyekeza isiphequluli sakho ngokushesha. I-Cryptography ihlanganisa konke lokhu, kodwa iphuzu lihlukile. Iphuzu liwukuthi kukhona umugqa omuhle phakathi [...]

Usayizi wohlu lwemibhalo awuwufanele umzamo wethu

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Lokhu akunamsebenzi ngokuphelele, akudingekile ekusebenzeni okusebenzayo, kodwa okuthunyelwe okuncane okuhlekisayo mayelana nezinkomba ku-*nix systems. Kungolwesihlanu. Phakathi nezingxoxo, imibuzo eyisicefe ivame ukuvela mayelana nama-inode, yonke into-yimafayela, abantu abambalwa abangayiphendula ngokunengqondo. Kodwa uma umba ujule kancane, ungathola izinto ezithakazelisayo. Ukuze uqonde okuthunyelwe, amaphuzu ambalwa: yonke into iyifayela. umkhombandlela futhi [...]

Ukusebenza kahle kwamandla ehhovisi: indlela yokunciphisa ukusetshenziswa kwamandla kwangempela?

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Sikhuluma kakhulu ngokuthi izikhungo zedatha zingawonga kanjani amandla ngokubeka imishini ehlakaniphile, isimo somoya esilungile, nokuphathwa kwamandla okumaphakathi. Namuhla sizokhuluma ngokuthi ungawonga kanjani amandla ehhovisi. Ngokungafani nezikhungo zedatha, ugesi emahhovisi awudingeki kuphela ngobuchwepheshe, kodwa nakubantu. Ngakho-ke, ukuthola i-coefficient ye-PUE lapha ku- […]

Izibalo zesayithi kanye nesitoreji sakho esincane

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I-Weblizer ne-Google Analytics zingisizile ukuba ngithole ukuqonda ngokwenzeka kumawebhusayithi iminyaka eminingi. Manje sengiyaqonda ukuthi banikeza ulwazi oluwusizo oluncane kakhulu. Ukufinyelela ifayela lakho le-access.log, ukuqonda izibalo kulula kakhulu nokusebenzisa amathuluzi ayisisekelo afana ne-sqlite, i-html, ulimi lwe-sql nanoma yimuphi umbhalo […]

Ingabe i-Kafka ku-Kubernetes inhle?

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Sawubona, Habr! Ngesinye isikhathi, saba ngabokuqala ukwethula isihloko se-Kafka emakethe yaseRussia futhi siqhubeka nokuqapha ukuthuthukiswa kwayo. Ikakhulukazi, sithole isihloko sokusebenzelana phakathi kwe-Kafka ne-Kubernetes sithakazelisa. I-athikili ebuyekeziwe (futhi eqaphile) ngalesi sihloko yanyatheliswa kubhulogi ye-Confluent emuva ngo-Okthoba wonyaka odlule ngaphansi kokubhalwa kukaGwen Shapira. Namuhla si […]

Ukuvakasha ngamathoni aluhlaza ngokukhanyayo

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Inkinga yezokuthutha ebaluleke kakhulu eSt. Petersburg amabhuloho. Ebusuku, ngenxa yabo, kufanele ubaleke ethaveni ungawuqedi ubhiya wakho. Hhayi-ke, noma ukhokhe imali ephindwe kabili yetekisi njengokujwayelekile. Ekuseni, bala ngokucophelela isikhathi ukuze ngokushesha nje lapho ibhuloho livaliwe, ulenze esiteshini njenge-mongoose esheshayo. Asazi […]

I-Medium Weekly Digest #3 (26 Jul - 2 Aug 2019)

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Labo abazimisele ukudela inkululeko yabo ukuze bathole isivikelo sesikhashana engozini abafanelwe yinkululeko noma ukuphepha. — Benjamin Franklin Le nhlabamkhosi ihloselwe ukukhulisa intshisekelo yoMphakathi endabeni yobumfihlo, leyo ngokukhanya kwezehlakalo zakamuva esiba usizo kakhulu kunangaphambili. Ku-ajenda: Isikhulu sesitifiketi se-Medium Root CA sethula ukuqinisekiswa kwesitifiketi sisebenzisa izici zephrothokholi ye-OCSP […]

Abafundi abahlanu kanye nabathathu basabalalisa izitolo zamanani abalulekile

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Noma ukuthi sabhala kanjani umtapo wezincwadi weklayenti C++ we-ZooKeeper, njlld kanye ne-Consul KV Emhlabeni wezinhlelo ezisabalalisiwe, kunenombolo yemisebenzi evamile: ukugcina ulwazi mayelana nokwakheka kweqoqo, ukuphatha ukucushwa kwama-node, ukuthola izindawo ezinephutha, ukukhetha umholi, nabanye. Ukuxazulula lezi zinkinga, izinhlelo ezikhethekile ezisabalalisiwe zidalwe - izinsizakalo zokuxhumanisa. Manje sizoba nentshisekelo kwezintathu zazo: ZooKeeper, […]

Izixazululo ze-Polycom VideoConference. Izinkumbulo 6 years later... Stage 2. Part 1. RMX1500

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Sanibonani bakwethu. Ekugcineni, isikhathi sesifikile sokugcwalisa isithembiso futhi sisho ukuthi konke kwaqhubeka futhi kwaphela kanjani. Ngixolise ngokuba sekwephuzile. Kuzoba nezingxenye ezi-2: RMX1500 CMA4000 Umbhalo ongezansi uzoqukatha izinhlamvu eziningi futhi ungabangela ukuhlolwa okungalungile kwesimo sami sengqondo kulesi sinqumo. Sengiphetha, ngizoveza ukuthi nginombono olinganayo futhi omuhle ngePolycom, […]

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