{"id":123648,"date":"2025-04-25T03:05:17","date_gmt":"2025-04-25T01:05:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-vstraivaemoj-subd-libmdbx-0-13-6"},"modified":"2025-04-25T03:05:17","modified_gmt":"2025-04-25T01:05:17","slug":"vypusk-vstraivaemoj-subd-libmdbx-0-13-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-vstraivaemoj-subd-libmdbx-0-13-6","title":{"rendered":"Vyd\u00e1n\u00ed vestav\u011bn\u00e9 datab\u00e1zov\u00e9 knihovny libmdbx 0.13.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byla publikov\u00e1na verze knihovny libmdbx 0.13.6 (MDBX) s implementac\u00ed vysoce v\u00fdkonn\u00e9 kompaktn\u00ed embedded datab\u00e1ze typu kl\u00ed\u010d-hodnota. K\u00f3d libmdbx je distribuov\u00e1n pod licenc\u00ed Apache 2.0. Podporov\u00e1ny jsou v\u0161echny aktu\u00e1ln\u00ed opera\u010dn\u00ed syst\u00e9my a architektury, v\u010detn\u011b rusk\u00e9ho Elbrus 2000. Pro libmdbx je k dispozici rozvinut\u00e9 API pro C++, stejn\u011b jako obl\u00edben\u00e9 vazby pro jazyky Rust, Haskell, Python, NodeJS, Ruby, Go, Nim, Deno, Scala. Mezi projekty vyu\u017e\u00edvaj\u00edc\u00ed libmdbx m\u016f\u017eeme zm\u00ednit Isar, Erigon a Reth, stejn\u011b jako v\u00fdvoj firem StarkWare a Positive Technologies.      <\/p>\n<p>Historicky je libmdbx hlubokou p\u0159epracov\u00e1n\u00edm datab\u00e1zov\u00e9ho syst\u00e9mu LMDB a p\u0159ekon\u00e1v\u00e1 sv\u00e9ho p\u0159edch\u016fdce v spolehlivosti, sad\u011b funkc\u00ed a v\u00fdkonu. Ve srovn\u00e1n\u00ed s LMDB v\u011bnuje libmdbx velkou pozornost kvalit\u011b k\u00f3du, stabiln\u00edmu fungov\u00e1n\u00ed API, testov\u00e1n\u00ed a automatick\u00fdm kontrol\u00e1m. Dod\u00e1v\u00e1 se n\u00e1stroj pro kontrolu integrity struktury datab\u00e1ze s n\u011bkter\u00fdmi mo\u017enostmi obnoven\u00ed. Technologicky libmdbx nab\u00edz\u00ed ACID, p\u0159\u00edsnou serializaci zm\u011bn a neblokuj\u00edc\u00ed \u010dten\u00ed s line\u00e1rn\u00edm \u0161k\u00e1lov\u00e1n\u00edm podle CPU jader. Podporov\u00e1no je automatick\u00e9 zhu\u0161t\u011bn\u00ed, automatick\u00e9 \u0159\u00edzen\u00ed velikosti datab\u00e1ze, odhad objemu dotaz\u016f podle rozsahu (range query estimation).          <\/p>\n<p>Hlavn\u00ed zm\u011bny:  <\/p>\n<ul>\n<li class=\"l\"> Zm\u011bna chov\u00e1n\u00ed: P\u0159i nemo\u017enosti odpojit kurzor od jeho aktu\u00e1ln\u00ed transakce funkce mdbx_cursor_bind() nyn\u00ed vrac\u00ed MDBX_EINVAL m\u00edsto MDBX_BAD_TXN.\n<li class=\"l\"> Aby se p\u0159ede\u0161lo potenci\u00e1ln\u00edm probl\u00e9m\u016fm, je pou\u017e\u00edv\u00e1n\u00ed copy_file_range() na j\u00e1drech Linux 5.3 \u2013 5.18 vypnuto.\n<li class=\"l\"> Vyvol\u00e1n\u00ed std::invalid_argument je nyn\u00ed provedeno explicitn\u00edm hl\u00e1\u0161en\u00edm MDBX_EINVAL.\n<li class=\"l\"> Byl odstran\u011bn regres p\u0159i pou\u017e\u00edv\u00e1n\u00ed kurzor\u016f pro DBI=0 (alias GC\/FreeDB) ve \u010dtec\u00edch transakc\u00edch.\n<li class=\"l\"> Byl odstran\u011bn regres ve form\u011b chyby EAGAIN p\u0159i kop\u00edrov\u00e1n\u00ed datab\u00e1ze na NFS a CIFS\/SMB.\n<li class=\"l\"> P\u0159i reprofilaci API v funkci kop\u00edrov\u00e1n\u00ed byl p\u0159id\u00e1n z\u00e1mek souboru pomoc\u00ed jak fcntl(), tak flock(). Nicm\u00e9n\u011b, v z\u00e1vislosti na verzi lok\u00e1ln\u00edho j\u00e1dra, verzi vzd\u00e1len\u00e9ho NFS a mo\u017enostech montov\u00e1n\u00ed, to mohlo v\u00e9st k n\u00e1vratu POSIX chyby EAGAIN (11 na v\u011bt\u0161in\u011b platforem, v\u010detn\u011b Linuxu). <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-los-angeles\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3964\">serveru<\/a> Byla odstran\u011bna chyba merge\/rebase v r\u00e1mci mdbx_txn_release_all_cursors_ex(), kter\u00e1 mohla v\u00e9st k n\u00e1sledn\u00fdm neo\u010dek\u00e1van\u00fdm chyb\u00e1m MDBX_EBADSIGN a \u00fanik\u016fm pam\u011bti.\n<li class=\"l\"> Byla opravena assert kontrola v cest\u011b ukon\u010den\u00ed vno\u0159en\u00fdch transakc\u00ed.\n<li class=\"l\">  Byla odstran\u011bna mo\u017enost n\u00e1vratu neo\u010dek\u00e1van\u00e9 chyby MDBX_BUSY z mdbx_txn_lock(dont_wait=false).\n<li class=\"l\">     Pro kompatibilitu s GCC 15.x v re\u017eimu C23 byl zm\u011bn\u011bn po\u0159\u00e1dek uv\u00e1d\u011bn\u00ed atribut\u016f funkc\u00ed.\n<li class=\"l\">  Byla publikov\u00e1na verze knihovny libmdbx 0.13.6 (MDBX) s implementac\u00ed vysoce v\u00fdkonn\u00e9 kompaktn\u00ed embedded datab\u00e1ze typu kl\u00ed\u010d-hodnota. K\u00f3d libmdbx je distribuov\u00e1n pod licenc\u00ed Apache 2.0.          <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63134\">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 0.13.6 (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-123648","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 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