Hacker News
Habka CTRL-C ee Postgres CLI u baabi'iyo weydiimaha waa si cajiib ah hack-y
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Mewayz Team
Editorial Team
Hacker News
Ruuxa raagay ee SIGINT: Waa maxay sababta Boostada CLI u baajintu u dareemayso jabsi
Horumarinta iyo maamulayaasha xogta, PostgreSQL interface interface (psql) waa darawal maalinle ah oo la aamini karo. Waa mid awood leh, sax ah, oo meel walba leh. Hase yeeshee, mid ka mid ah is-dhexgalkeeda aasaasiga ah - baabi'inta weydiinta baxsadka ah ee leh marin-gaaban ee caalamiga ah ee CTRL-C - ayaa si xiiso leh u dareemaya in uu meesha ka maqan yahay. Si ka duwan codsiyo badan oo casri ah oo amarku si fudud u joojiyo hawlgalka hadda jira, psql, CTRL-C dhab ahaantii kama tirtirto su'aasha server-ka. Taa baddalkeeda, waxay baabi'isaa sugidda macmiilkanatiijada, taasoo ka dhigaysa su'aasha inay suurtogal tahay inay ka baxdo server-ka xogta. Dhaqankani maaha cayayaan; waa farshaxan nashqad ah oo muujiya lakabyada, marmarka qaarkood jilicsan, naqshadaha qalabkayaga. Meheradaha ku dhismaya nidaamyada habaysan sidaMewayz, fahamka xaqiiqooyinkan hoose ayaa fure u ah samaynta lakabyo hawleed adag oo udub dhexaad u ah isticmaale.Sheeko Laba Habraac: Macmiil vs. Server-ka
Xudunta dareenka "hack-y" wuxuu ka yimid qaab-dhismeedka psql. Markaad su'aal ku qabato psql, laba hab oo madax banaan ayaa shaqada ku jira: habka macmiilka psql ee mashiinka deegaankaaga iyo habka server-ka postgres ee kaydiyaha xogta. Marka la cadaadiyo CTRL-C waxay u dirtaa SIGINT (signal kala go'a) gaar ahaan psql habka macmiilka. Shaqada degdega ah ee macmiilku waa inuu joojiyo sugitaanka oo uu ku soo laabto isla markiiba, taas oo uu sameeyo. Si kastaba ha ahaatee, seerfarku wax aqoon ah uma laha calaamaddan dhinaca macmiilka ah. Marka loo eego dhinaceeda, weydiintu wali waa mid sax ah oo socota Codsiga burinta waa in lagu wargeliyaa si gaar ah, tilmaamo cusub."CTRL-C ee psql wuu ka yar yahay batoonka 'stop' iyo in ka badan 'fadlan iska illow codsigeyga hore' ogaysiis inaad u dhiibto maktabad mashquul ah inta ay goor horeba u jiraan xirmooyinka."
Brotokoolka burinta: Codsiga labaad
Haddaba, sidee baa su'aasha dhab ahaan loo tirtiraa? Ka dib markii la qabto SIGINT, macmiil psql ah oo si fiican u dhaqma ayaa bilaabaya PostgreSQL's borotokoolka joojinta rasmiga ah. Tani waxay ku lug leedahay furitaankaaqoonsiga cusubserverka iyo diritaanka "codsiga joojinta" gaar ah oo ka kooban fure sir ah oo tilmaamaya habka dhabarka ee gaarka ah ee socodsiinaya weydiintaada. Codsigan waxa lagu farsameeyay mudnaan hoose, mana jirto dammaanad qaadka guul degdeg ah. Talaabadan badan, habka dabka-iyo-ilawgu waa sababta hab-dhaqanku u dareemo dad aan toos ahayn. Ma aha carqalad toos ah; waa codsi asluub leh, oo aan isku mid ahayn oo lagu soo diray channel-ka dambe.
Farqiga Khibrada Isticmaalaha iyo Kiisaska Cidhifka
Naqshaddani waxay u horseeddaa dhawr dhibcood oo la taaban karo oo isticmaalayaasha:
- Jawaab-la'aan La Arkay: Waxaad ku dhufatay CTRL-C, isla markiiba dib u soo celi jawaabtaada, laakiin culayska nidaamka ayaa weli ah mid sarreeya sababtoo ah seerfarku wali wuu shaqaynayaa.
- Natiijo aan la hubin:Ma haysatid caddayn degdeg ah haddii codsiga joojinta uu helay ama la sharfay server-ku.
- Ku-Xidhiidhinta-Fashilka Ku-tiirsanaanta: Haddii server-ku uu yahay firewalled ama xidhiidhka cusub ee codsiga burinta uu xumaado, askarta waydiinta asalka ahi waa ilaa aan xad lahayn.
- Isku-dheeli-tirnaanta Cilmi-nafsiga:Amarka caalamiga ah ee "iska soo rididda" ma fuliyo ilmo iska soo rididda isku midka ah, jebinta filashada isticmaale ee laga sameeyay meelo kale oo deegaanka kombuyuutarka ah.
Dhismaha Aware Foundations oo leh Mewayz
Nidaamyada hawlgelinta ganacsi ee casriga ahi waa inay meesha ka saaraan waxyaalahan kakan ee hoose iyadoo la ixtiraamayo caqabadaha. Madal sidaMewayzee, u dhaqanta sidii OS ganacsi modul ah, waxa ay koobaysaa isdhexgalka xogta gudaha qaybaha adeegga la maareeyey. Tusaale ahaan, moduleka weydiinta xogta Mewayz kaliya ma daaha ka qaadi doono degdegga SQL cayriin; waxay ku duubi doontaa kontaroolada saaxiibtinimada leh - run, badhanka "joojinta" la xaqiijin karo, wakhtiyada su'aalaha, iyo dashboards xaalada waqtiga-dhabta ah ee muujinaya waxa dhabta ah ee ku shaqeeya serverka. Tani waxay khibradda ka guuraysaa wax ka qabashada borotokoolka quirks ilaa maaraynta hawlo ganacsi oo cad, oo la fulin karo. Casharka psql's CTRL-C waa in aaladaha waaweyn aysan soo bandhigin oo keliya awoodaha xoogga leh; waxay u naqshadeeyaan is-dhexgal dareen leh oo la isku halayn karo, iyaga oo u beddelaya dhaxalka dhismaha oo u beddelaya qulqulo shaqo oo aan kala go 'lahayn. Fahamka jabsiga waxay muujinaysaa fursadda lagu dhisayo wax ka wanaagsan.💡 DID YOU KNOW?
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