{"id":103715,"date":"2022-04-05T15:36:50","date_gmt":"2022-04-05T13:36:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-ferretdb-0-1-realizaczii-mongodb-na-baze-subd-postgresql"},"modified":"2022-04-05T15:36:50","modified_gmt":"2022-04-05T13:36:50","slug":"vypusk-ferretdb-0-1-realizaczii-mongodb-na-baze-subd-postgresql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-ferretdb-0-1-realizaczii-mongodb-na-baze-subd-postgresql","title":{"rendered":"V\u00e4ljaanne FerretDB 0.1, MongoDB teostus PostgreSQL andmebaasi p\u00f5hjal","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Avaldasime projekti FerretDB 0.1 (endine MangoDB), mis v\u00f5imaldab asendada dokumentide p\u00f5hise andmebaasi MongoDB PostgreSQL-iga, ilma et tuleks teha muudatusi rakenduste koodis. FerretDB on rakendatud proksiserverina, mis t\u00f5lgib MangoDB p\u00e4ringud SQL-p\u00e4ringuteks PostgreSQL-ile, v\u00f5imaldades PostgreSQL-i kasutada tegeliku salvestusena. Kood on kirjutatud Go keeles ja levitatakse Apache 2.0 litsentsi alusel.        <\/p>\n<p>Migratsioonivajadus v\u00f5ib tekkida seoses MongoDB \u00fcleminekuga mittet\u00e4ielikult avatud SSPL litsentsile, mis p\u00f5hineb AGPLv3 litsentsil, kuid ei ole avatud, kuna see sisaldab diskrimineerivat n\u00f5uet anda mitte ainult rakenduse enda kood, vaid ka k\u00f5igi komponentide allikaid, mis on seotud pilveteenuse osutamisega, SSPL litsentsi alusel.     <\/p>\n<p>FerretDB sihtgrupp on kasutajad, kes ei kasuta oma rakendustes MongoDB laiendatud v\u00f5imalusi, kuid soovivad kasutada t\u00e4ielikult avatud tarkvarastakki. FerretDB toetab praegu alles osa MongoDB v\u00f5imalustest, mis on k\u00f5ige sagedamini kasutatavad t\u00fc\u00fcpilistes rakendustes. Tulevikus plaanivad nad saavutada t\u00e4ieliku \u00fchilduvuse MongoDB draiveritega ning pakkuda v\u00f5imalust kasutada FerretDB-d MongoDB l\u00e4bipaistva asendajana.      <\/p>\n<p>MongDB asub kiirete ja skaaleeritavate s\u00fcsteemide ni\u0161\u0161i, mis t\u00f6\u00f6tlevad andmeid v\u00f5tme\/v\u00e4\u00e4rtuse formaadis ning relatsioonilised andmebaasid, mis on funktsionaalsed ja mugavad p\u00e4ringute koostamisel. MongoDB toetab dokumentide salvestamist JSON-sarnases formaadis, omab piisavalt paindlikku p\u00e4ringute keelt, suudab luua indekseid erinevate salvestatud atribuutide jaoks, t\u00f5husalt talletab suuri binaarseid objekte, toetab andmebaasis andmete muutmise ja lisamise toimingute logimist, suudab t\u00f6\u00f6tada Map\/Reduce paradigma kohaselt, toetab replikatsiooni ja k\u00f5rgelt saadud konfiguratsioonide loomist.     <\/p>\n<p>FerretDB 0.1.0 versioonis on andmete ekstraktsioon PostgreSQL-ist t\u00e4ielikult \u00fcmber kujundatud. Varem genereeriti iga MongoDB k\u00fcsimuse jaoks \u00fcks SQL p\u00e4ring PostgreSQL-ile, mis kasutas JSON formaadi t\u00f6\u00f6tlemiseks funktsioone ja filtreeris tulemusi PostgreSQL-i poolel. PostgreSQL-i ja MongoDB json-funktsioonide semantika erinevuste t\u00f5ttu t\u00e4heldati erinevat k\u00e4itumist erinevate t\u00fc\u00fcpide v\u00f5rdlemisel ja sorteerimisel. Selle probleemi lahendamiseks ekstraktsioneeritakse PostgreSQL-ist n\u00fc\u00fcd \u00fcleliigne andmevalik ja tulemuste filtreerimine toimub FerretDB poolel, mis v\u00f5imaldab enamikus olukordades MongoDB k\u00e4itumist korrata.     <\/p>\n<p>\u0426\u0435\u043d\u043e\u0439 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u0442\u0430\u043b\u043e \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0432 \u0431\u0443\u0434\u0443\u0449\u0438\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0442 \u043a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0437\u0430 \u0441\u0447\u0451\u0442 \u0432\u044b\u0431\u043e\u0440\u043e\u0447\u043d\u043e\u0439 \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 FerretDB \u0442\u043e\u043b\u044c\u043a\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0441\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0437\u0430\u043f\u0440\u043e\u0441 &#171;db.collection.find({_id: &#8216;some-id-value&#8217;})&#187; \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0446\u0435\u043b\u0438\u043a\u043e\u043c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0432 PostgreSQL. \u041f\u0435\u0440\u0432\u0438\u0447\u043d\u043e\u0439 \u0437\u0430\u0434\u0430\u0447\u0435\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430 \u0434\u0430\u043d\u043d\u043e\u043c \u044d\u0442\u0430\u043f\u0435 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u0435 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438 \u0441 MongoDB, \u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u043a\u0430 \u043e\u0442\u043e\u0434\u0432\u0438\u0433\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u0432\u0442\u043e\u0440\u043e\u0439 \u043f\u043b\u0430\u043d.  \u0418\u0437 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0441\u0435\u0445 \u0431\u0438\u0442\u043e\u0432\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432, \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f &#171;$eq&#187;, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 &#171;$elemMatch&#187; \u0438  &#171;$bitsAllClear&#187;.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56971\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 FerretDB 0.1 (\u0431\u044b\u0432\u0448\u0438\u0439 MangoDB), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e-\u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0421\u0423\u0411\u0414 MongoDB \u043d\u0430 PostgreSQL \u0431\u0435\u0437 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043a\u043e\u0434 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. FerretDB \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u043a\u0430\u043a \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440, \u0442\u0440\u0430\u043d\u0441\u043b\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a MangoDB \u0432 SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u043a PostgreSQL, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c PostgreSQL \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430. \u041a\u043e\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. \u041f\u043e\u0442\u0440\u0435\u0431\u043d\u043e\u0441\u0442\u044c \u043c\u0438\u0433\u0440\u0430\u0446\u0438\u0438 \u043c\u043e\u0436\u0435\u0442 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u0443\u0442\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103715","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 FerretDB 0.1 (\u0431\u044b\u0432\u0448\u0438\u0439 MangoDB), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e-\u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0421\u0423\u0411\u0414 MongoDB \u043d\u0430 PostgreSQL \u0431\u0435\u0437 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043a\u043e\u0434 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. 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