{"id":120982,"date":"2024-12-14T09:46:06","date_gmt":"2024-12-14T09:46:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-vstraivaemoj-subd-libmdbx-0-13-2"},"modified":"2026-05-20T17:49:32","modified_gmt":"2026-05-20T17:49:32","slug":"vypusk-vstraivaemoj-subd-libmdbx-0-13-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-vstraivaemoj-subd-libmdbx-0-13-2","title":{"rendered":"Wydanie wbudowanej bazy danych libmdbx 0.13.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Opublikowano wydanie biblioteki libmdbx 0.13.2 (MDBX) z realizacj\u0105 wysoko wydajnej kompaktowej wbudowanej bazy danych klasy klucz-warto\u015b\u0107. Kod libmdbx jest rozpowszechniany na licencji Apache 2.0. Obs\u0142ugiwane s\u0105 wszystkie aktualne systemy operacyjne i architektury, w tym rosyjski Elbrus 2000. Dla libmdbx oferowane jest rozwini\u0119te API dla C++, a tak\u017ce wspierane przez entuzjast\u00f3w powi\u0105zania z j\u0119zykami 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\"> Przyspieszone aktualizacje GC podczas zwracania\/przenoszenia list stron w skomplikowanych scenariuszach. Wprowadzono i aktywowano wcze\u015bniej wy\u0142\u0105czony eksperymentalny tryb koryguj\u0105cy. W efekcie zasadniczo poprawi\u0142a si\u0119 zbie\u017cno\u015b\u0107 (zmniejszy\u0142a si\u0119 liczba pr\u00f3b), a tak\u017ce usuni\u0119to b\u0142\u0105d prowadz\u0105cy do \u201ezap\u0119tlenia\u201d podczas zatwierdzania transakcji (z powrotem b\u0142\u0119du MDBX_PROBLEM) w rzadkich, specyficznych warunkach.\n<li class=\"l\"> W skryptach budowania CMake w\u0142\u0105czono standard C23.\n<li class=\"l\"> Dodano makra T dla par funkcji char\/wchar_t.\n<li class=\"l\"> W API C++ dodano wsparcie dla zagnie\u017cd\u017conych transakcji zapisuj\u0105cych.\n<li class=\"l\"> Dokonano przej\u015bcia na drug\u0105 wersj\u0119 specyfikacji semantycznego wersjonowania (\u201eSemantic Versioning 2\u201d) i zapewniono eksport informacji o wersji do VERSION.json.\n<li class=\"l\"> Aby zapewni\u0107 reprodukowalno\u015b\u0107 bud\u00f3w, dodano wsparcie dla zmiennej \u015brodowiskowej SOURCE_DATE_EPOCH. Wsparcie dla MDBX_BUILD_TIMESTAMP zosta\u0142o zachowane, a ta zmienna ma priorytet.\n<li class=\"l\"> Dodano mo\u017cliwo\u015b\u0107 podawania dodatkowych informacji o budowie libmdbx za pomoc\u0105 opcji MDBX_BUILD_METADATA. Aktualnie podawane informacje s\u0105 po prostu do\u0142\u0105czane do biblioteki jako warto\u015b\u0107 mdbx_build.metadata, a w przysz\u0142o\u015bci b\u0119d\u0105 r\u00f3wnie\u017c u\u017cywane przy formowaniu pakiet\u00f3w itp.\n<li class=\"l\"> Dodano logowanie b\u0142\u0119d\u00f3w zwracanych z API. Teraz wystarczy ustawi\u0107 poziom logowania MDBX_LOG_DEBUG (do logowania b\u0142\u0119d\u00f3w z wyj\u0105tkiem MDBX_NOTFOUND) lub MDBX_LOG_TRACE (do logowania wszystkich b\u0142\u0119d\u00f3w oraz MDBX_RESULT_TRUE).\n<li class=\"l\"> Zmiana zachowania:\n<ul>\n<li class=\"l\"> Dodano metod\u0119 mdbx::cursor::get_multiple_samelength() i zmieniono nazw\u0119 mdbx::txn::put_multiple_samelength().\n<li class=\"l\"> Dla jednorodno\u015bci API C++ przy wykonywaniu operacji MDBX_GET_MULTIPLE teraz r\u00f3wnie\u017c zwracana jest warto\u015b\u0107 samego klucza.\n<li class=\"l\">  Dla sta\u0142ych wymiarowych mdbx::env::geometry typ podstawowy zmieniono z bezznakowego size_t na znakowy intptr_t.\n<li class=\"l\"> Wyb\u00f3r pomi\u0119dzy u\u017cywaniem ntdll a CRT teraz jest dokonywany tylko po wyra\u017anym wy\u0142\u0105czeniu API C++.\n<li class=\"l\">  Zapewnione jest zwalnianie pami\u0119ci zablokowanych\/przerwanych transakcji odczytu przekazywanych do mdbx_txn_commit(). Umowa API wymaga, aby takie transakcje by\u0142y zwalniane za pomoc\u0105 mdbx_txn_abort(), przez co funkcja mdbx_txn_commit() zwraca\u0142a b\u0142\u0105d w takich przypadkach, nie niszcz\u0105c samych transakcji. Prowadzi\u0142o to do wyciek\u00f3w pami\u0119ci z powodu b\u0142\u0119d\u00f3w w aplikacjach, co sk\u0142oni\u0142o do zmiany zachowania.\n<li class=\"l\"> U\u017cycie makra __deprecated_enum, je\u015bli jest zdefiniowane.\n<li class=\"l\"> Podczas budowy za pomoc\u0105 CMake wyb\u00f3r standardu j\u0119zyka C jest teraz realizowany z uwzgl\u0119dnieniem CMAKE_C_STANDARD.  <\/ul>\n<\/ul>\n<p>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62403\">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 0.13.2 (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-120982","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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