{"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\/sv\/blog\/news\/vypusk-vstraivaemoj-subd-libmdbx-0-13-2","title":{"rendered":"Utgivningen av den inbyggda databasen libmdbx 0.13.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Uppdateringen av libmdbx-biblioteket 0.13.2 (MDBX) har offentliggjorts, vilket ger en h\u00f6gpresterande kompakt inb\u00e4ddad nyckel-v\u00e4rde-databas. Koden f\u00f6r libmdbx distribueras under Apache 2.0-licensen. St\u00f6d f\u00f6r alla aktuella operativsystem och arkitekturer, samt den ryska Elbrus 2000, erbjuds. F\u00f6r libmdbx finns ett utvecklat API f\u00f6r C++, samt st\u00f6djande bindningar till spr\u00e5k som Rust, Haskell, Python, NodeJS, Ruby, Go, Nim, Deno, Scala.      <\/p>\n<p>Historiskt sett \u00e4r libmdbx en djup omarbetning av databashanteraren LMDB och \u00f6vertr\u00e4ffar sin f\u00f6reg\u00e5ngare i p\u00e5litlighet, funktionalitet och prestanda. I j\u00e4mf\u00f6relse med LMDB l\u00e4ggs det stor vikt vid kodkvalitet, stabilitet i API:et, testning och automatiska kontroller. En verktyg f\u00f6r integritetskontroll av databasstrukturen levereras med vissa \u00e5terst\u00e4llningsm\u00f6jligheter. Teknologiskt erbjuder libmdbx ACID, strikt serialisering av \u00e4ndringar och icke-blockerande l\u00e4sning med linj\u00e4r skalning \u00f6ver CPU-k\u00e4rnor. Automatisk komprimering av data, automatisk hantering av databasens storlek samt skattning av urvalsstorlekar baserat p\u00e5 intervall (range query estimation) st\u00f6djs.        <\/p>\n<p>Huvudsakliga f\u00f6r\u00e4ndringar:  <\/p>\n<ul>\n<li class=\"l\"> Snabbare GC-uppdatering vid \u00e5terst\u00e4llning\/placering av sidlistor i komplexa scenarier. Det tidigare inaktiverade experimentella feedback-l\u00e4get har reviderats och aktiverats. Detta har v\u00e4sentligt f\u00f6rb\u00e4ttrat konvergensen (minskat antalet f\u00f6rs\u00f6k) och eliminerat ett fel som ledde till \"str\u00f6mning\" vid transaktionsl\u00e5sningsfel (med \u00e5terv\u00e4ndande av felet MDBX_PROBLEM) under s\u00e4llsynta specifika f\u00f6rh\u00e5llanden.\n<li class=\"l\"> CMake-skriptet inkluderar standarden C23.\n<li class=\"l\"> T-makron f\u00f6r par av funktioner char\/wchar_t har lagts till.\n<li class=\"l\"> St\u00f6d f\u00f6r inre skrivande transaktioner har lagts till i C++ API.\n<li class=\"l\"> \u00d6verg\u00e5ngen till den andra utg\u00e5van av specifikationen f\u00f6r semantisk versionering (\"Semantic Versioning 2\") har genomf\u00f6rts och export av versionsinformation till VERSION.json har s\u00e4kerst\u00e4llts.\n<li class=\"l\"> F\u00f6r att s\u00e4kerst\u00e4lla reproducibilitet av byggnader har st\u00f6d f\u00f6r milj\u00f6variabeln SOURCE_DATE_EPOCH lagts till. St\u00f6det f\u00f6r MDBX_BUILD_TIMESTAMP har sparats och denna variabel har h\u00f6gre prioritet.\n<li class=\"l\"> M\u00f6jligheten att ange ytterligare information om libmdbx-byggnader har lagts till via alternativet MDBX_BUILD_METADATA. Den angivna informationen inkluderas nu helt i biblioteket som v\u00e4rde f\u00f6r mdbx_build.metadata, och kommer \u00e4ven att anv\u00e4ndas vid paketformering etc. i framtiden.\n<li class=\"l\"> Fels\u00f6kning av fel som returneras fr\u00e5n API har lagts till. Nu r\u00e4cker det att ange loggniv\u00e5n MDBX_LOG_DEBUG (f\u00f6r loggning av fel bortsett fr\u00e5n MDBX_NOTFOUND) eller MDBX_LOG_TRACE (f\u00f6r loggning av alla fel, inklusive MDBX_RESULT_TRUE).\n<li class=\"l\"> \u00c4ndring av beteende:\n<ul>\n<li class=\"l\"> Metoden mdbx::cursor::get_multiple_samelength() har lagts till och mdbx::txn::put_multiple_samelength() har bytt namn.\n<li class=\"l\"> F\u00f6r enhetlighet i C++ API \u00e5terkommer nu \u00e4ven v\u00e4rdet av sj\u00e4lva nyckeln n\u00e4r operationen MDBX_GET_MULTIPLE utf\u00f6rs.\n<li class=\"l\">  F\u00f6r storlekskonstanterna mdbx::env::geometry har den basala typen \u00e4ndrats fr\u00e5n osignerad size_t till signerad intptr_t.\n<li class=\"l\"> Valet att anv\u00e4nda ntdll ist\u00e4llet f\u00f6r CRT g\u00f6rs nu endast vid uttrycklig inaktivering av C++ API.\n<li class=\"l\">  Minnesutrymme f\u00f6r avbrutna\/l\u00e4sta transaktioner som skickats till mdbx_txn_commit() har frigjorts. API-\u00f6verenskommelsen kr\u00e4ver att s\u00e5dana transaktioner frig\u00f6rs via mdbx_txn_abort(), vilket g\u00f6r att funktionen mdbx_txn_commit() returnerade fel i s\u00e5dana fall utan att f\u00f6rst\u00f6ra sj\u00e4lva transaktionerna. Detta ledde till minnesl\u00e4ckor p\u00e5 grund av applikationsfel, vilket motiverade en f\u00f6r\u00e4ndring av beteendet.\n<li class=\"l\"> Anv\u00e4ndning av makrot __deprecated_enum, om det \u00e4r definierat.\n<li class=\"l\"> Vid byggnation med CMake v\u00e4ljs nu spr\u00e5kstandarden C med h\u00e4nsyn till CMAKE_C_STANDARD.  <\/ul>\n<\/ul>\n<p>K\u00e4lla: <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 5.0.4 - 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