{"id":121338,"date":"2025-01-14T21:45:59","date_gmt":"2025-01-14T19:45:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-vstraivaemoj-subd-libmdbx-0-13-3"},"modified":"2025-01-14T21:45:59","modified_gmt":"2025-01-14T19:45:59","slug":"vypusk-vstraivaemoj-subd-libmdbx-0-13-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-vstraivaemoj-subd-libmdbx-0-13-3","title":{"rendered":"Wydanie wbudowanej bazy danych libmdbx 0.13.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Opublikowana wersja biblioteki libmdbx 0.13.3 (MDBX) z realizacj\u0105 wydajnej, kompaktowej bazy danych typu klucz-warto\u015b\u0107. Kod libmdbx jest udost\u0119pniany na licencji Apache 2.0. Wspierane s\u0105 wszystkie aktualne systemy operacyjne i architektury, w tym rosyjski Elbrus 2000. Dla libmdbx oferowane jest rozbudowane API dla C++, a tak\u017ce wspierane przez entuzjast\u00f3w wi\u0105zania do j\u0119zyk\u00f3w Rust, Haskell, Python, NodeJS, Ruby, Go, Nim, Deno, Scala.      <\/p>\n<p>Historia libmdbx to g\u0142\u0119boka przer\u00f3bka bazy danych LMDB, kt\u00f3ra przewy\u017csza swojego poprzednika pod wzgl\u0119dem niezawodno\u015bci, zestawu funkcjonalno\u015bci i wydajno\u015bci. W por\u00f3wnaniu do LMDB, libmdbx k\u0142adzie du\u017cy nacisk na jako\u015b\u0107 kodu, stabilno\u015b\u0107 pracy API, testowanie i automatyczne kontrole. Dostarczane jest narz\u0119dzie do sprawdzania integralno\u015bci struktury bazy danych z pewnymi mo\u017cliwo\u015bciami odzyskiwania. Technologicznie libmdbx oferuje ACID, \u015bcis\u0142\u0105 serializacj\u0119 zmian i nieblokuj\u0105ce odczyty z liniowym skalowaniem obci\u0105\u017cenia na rdzeniach CPU. Wspierana jest automatyczna kompaktyfikacja, automatyczne zarz\u0105dzanie rozmiarem bazy danych oraz szacowanie obj\u0119to\u015bci zapyta\u0144 w zakresie (range query estimation).        <\/p>\n<p>G\u0142\u00f3wne zmiany:  <\/p>\n<ul>\n<li class=\"l\"> Ga\u0142\u0105\u017a 0.13.x uzyska\u0142a status stabilny. Rozpocz\u0119to rozw\u00f3j ga\u0142\u0119zi 0.14.x.\n<li class=\"l\"> W API C dodano funkcj\u0119 mdbx_cursor_count_ex(), kt\u00f3ra umo\u017cliwia uzyskanie zar\u00f3wno liczby wielowarto\u015bciowych odpowiadaj\u0105cych bie\u017c\u0105cemu kluczowi, jak i informacji o zagnie\u017cd\u017conym drzewie przechowuj\u0105cym te warto\u015bci.\n<li class=\"l\"> W API C++ dodano metod\u0119 mdbx::txn::make_broken(), analogiczn\u0105 do mdbx_txn_break().\n<li class=\"l\"> W narz\u0119dziach mdbx_copy, mdbx_drop, mdbx_dump, mdbx_load, mdbx_stat wprowadzono rejestrowanie b\u0142\u0119d\u00f3w, ostrze\u017ce\u0144 i wa\u017cnych komunikat\u00f3w od libmdbx.\n<li class=\"l\"> Zmiana zachowania:\n<ul>\n<li class=\"l\"> Po w\u0142\u0105czeniu profilowania zbieracza \u015bmieci (kompilacja z opcj\u0105 MDBX_ENABLE_PROFGC=ON) teraz zliczane s\u0105 koszty czasu CPU na scalanie list stron, tj. na dzia\u0142anie funkcji pnl_merge().\n<li class=\"l\">  W narz\u0119dziu testuj\u0105cym warto\u015b\u0107 trybu danych zosta\u0142a zmieniona z data.dups na data.multi.\n<li class=\"l\">  Udoskonalono kontrol\u0119 d\u0142ugo\u015bci klucza wewn\u0105trz cursor_seek().\n<li class=\"l\"> Je\u015bli za po\u015brednictwem mdbx_env_set_option(MDBX_opt_txn_dp_limit) u\u017cytkownik nie okre\u015bli\u0142 warto\u015bci, to limit stron brudnych jest dostosowywany przy uruchomieniu ka\u017cdej niezagnie\u017cd\u017conej transakcji zapisu, w oparciu o dost\u0119pn\u0105 pami\u0119\u0107 RAM i rozmiar bazy danych.\n<li class=\"l\"> W trybie MDBX_NOSTICKYTHREADS dozwolone jest commit\/abort zagnie\u017cd\u017conych transakcji z dowolnego w\u0105tku.\n<li class=\"l\"> Podczas pr\u00f3by uruchomienia zagnie\u017cd\u017conych transakcji w trybie MDBX_WRITEMAP rejestrowane s\u0105 zdarzenia i zwracany jest b\u0142\u0105d MDBX_INCOMPATIBLE.\n<li class=\"l\"> W API C++ w konstruktorach\/inicjalizatorach oraz metodach zwi\u0105zanych z tworzeniem geometrii Bazy Danych domy\u015blnie u\u017cywane s\u0105 tylko warto\u015bci domy\u015blne.\n<li class=\"l\"> Wewn\u0105trz mdbx_env_set_geometry() poprawiono heurystyki do dobierania parametr\u00f3w geometrii Bazy Danych \u017c\u0105danych przez u\u017cytkownika \u201edomy\u015blnie\u201d.  <\/ul>\n<li class=\"l\"> Poprawki:\n<ul>\n<li class=\"l\"> Usuni\u0119to regresj\u0119 blokady mutexa podczas pr\u00f3by ponownego zamkni\u0119cia deskryptora dbi, w tym podczas pr\u00f3by jawnego zamkni\u0119cia deskryptora po usuni\u0119ciu zwi\u0105zanej z nim tabeli.\n<li class=\"l\"> Usuni\u0119to regresj\u0119 stanu zagnie\u017cd\u017conego\/dupsort wska\u017anika po wstawieniu danych w trybie MDBX_APPEND.\n<li class=\"l\"> Wsparcie dla uzyskiwania boot_id podczas pracy wewn\u0105trz kontenera LXC.\n<li class=\"l\"> Usuni\u0119to b\u0142\u0105d niew\u0142a\u015bciwej obs\u0142ugi pr\u00f3by uruchomienia zagnie\u017cd\u017conej czytaj\u0105cej transakcji. Teraz w takich sytuacjach zwracany jest b\u0142\u0105d MDBX_EINVAL, poniewa\u017c zagnie\u017cd\u017cenie jest obs\u0142ugiwane tylko dla transakcji odczytu-zapisu.\n<li class=\"l\"> Usuni\u0119to regresj\u0119 SIGSEGV przy dost\u0119pie do zerowego adresu podczas pracy w trybie tylko do odczytu bez u\u017cycia pliku LCK, na przyk\u0142ad przy umieszczaniu Bazy Danych na no\u015bniku dost\u0119pnym tylko do odczytu.  <\/ul>\n<\/ul>\n<p>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62554\">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 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libmdbx 0.13.3 (MDBX) \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e\u0439 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0431\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u043a\u043b\u0430\u0441\u0441\u0430 \u043a\u043b\u044e\u0447-\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435. \u041a\u043e\u0434 libmdbx \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\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0432\u0441\u0435 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0439 \u042d\u043b\u044c\u0431\u0440\u0443\u0441 2000. \u0414\u043b\u044f libmdbx \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u043e\u0435 API \u0434\u043b\u044f C++, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0435 \u044d\u043d\u0442\u0443\u0437\u0438\u0430\u0441\u0442\u0430\u043c\u0438 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 \u043a \u044f\u0437\u044b\u043a\u0430\u043c Rust, Haskell, Python, NodeJS, Ruby, Go, Nim, [&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-121338","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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