{"id":55027,"date":"2020-01-10T00:00:00","date_gmt":"2020-01-09T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu"},"modified":"2020-02-18T14:03:06","modified_gmt":"2020-02-18T11:03:06","slug":"bd-messendzhera-ch-2-sektsioniruem-nazhivuyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu","title":{"rendered":"Messenger DB (Part 2): live partitioning","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Sikeresen megtervezt\u00fck a PostgreSQL adatb\u00e1zisunk fel\u00e9p\u00edt\u00e9s\u00e9t a levelez\u00e9s t\u00e1rol\u00e1s\u00e1ra, eltelt egy \u00e9v, a felhaszn\u00e1l\u00f3k akt\u00edvan t\u00f6ltik fel, m\u00e1r t\u00f6bb milli\u00f3 <b>bejegyz\u00e9st tartalmaz.<\/b>, \u00e9s... valami kezd el akadozni.<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/483176\/\">1. r\u00e9sz: az adatb\u00e1zis v\u00e1zszerkezet\u00e9nek megtervez\u00e9se<\/a><\/noindex><\/li>\n<li>2. r\u00e9sz: \u00e9l\u0151 szekcion\u00e1l\u00e1s<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Messenger DB (Part 2): live partitioning\" src=\"\/wp-content\/uploads\/2020\/01\/7830da046d9c472af15330e42cbb05e0.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nA dolog az, hogy <b>a t\u00e1bl\u00e1k m\u00e9ret\u00e9nek n\u00f6veked\u00e9s\u00e9vel n\u0151 az indexek \"m\u00e9lys\u00e9ge\" is<\/b> \u2014 b\u00e1r logaritmikusan. De id\u0151vel ez arra k\u00e9nyszer\u00edti a szervert, hogy ugyanazokhoz a read\/write feladatokhoz <i>sokkal t\u00f6bb adatoldalt dolgozzon fel<\/i>, mint kezdetben.<\/p>\n<p>Itt j\u00f6n a k\u00e9pbe a <b>szekcion\u00e1l\u00e1s.<\/b>.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nMegjegyzem, hogy nem a shardingr\u00f3l besz\u00e9l\u00fcnk, ami azt jelenti, hogy az adatokat k\u00fcl\u00f6nb\u00f6z\u0151 adatb\u00e1zisok vagy szerverek k\u00f6z\u00f6tt osztjuk el. Mert m\u00e9g ha el is osztja az adatokat <b>t\u00f6bb<\/b> szerverek k\u00f6z\u00f6tt, akkor sem tudja megsz\u00fcntetni az \"indexek felf\u00fav\u00f3d\u00e1s\u00e1nak\" probl\u00e9m\u00e1j\u00e1t az id\u0151 m\u00fal\u00e1s\u00e1val. Nyilv\u00e1nval\u00f3, hogy ha megengedheti mag\u00e1nak, hogy minden nap \u00faj szervert \u00e1ll\u00edtson \u00fczembe, akkor a probl\u00e9m\u00e1i m\u00e1r nem a konkr\u00e9t adatb\u00e1zis dimenzi\u00f3j\u00e1ban vannak.<\/p>\n<p>Mi nem konkr\u00e9t szkripteket fogunk megvizsg\u00e1lni a \"hardveren\" t\u00f6rt\u00e9n\u0151 szekcion\u00e1l\u00e1s v\u00e9grehajt\u00e1s\u00e1ra, hanem mag\u00e1t az megk\u00f6zel\u00edt\u00e9st \u2014 hogy mit \u00e9s hogyan \u00e9rdemes \"szeletekre v\u00e1gni\", \u00e9s ez a v\u00e1gy hova vezet.<\/p>\n<h2>Koncept<\/h2>\n<p>\nM\u00e9g egyszer hat\u00e1rozzuk meg a c\u00e9lunkat: azt szeretn\u00e9nk, hogy ma, holnap, \u00e9s egy \u00e9v m\u00falva is a PostgreSQL adatok olvas\u00e1si m\u0171velet sor\u00e1n b\u00e1rmikor k\u00f6r\u00fclbel\u00fcl azonos mennyis\u00e9gben maradjanak.<\/p>\n<p>B\u00e1rmilyen <b>kronol\u00f3giailag halmozott adatok<\/b> (\u00fczenetek, dokumentumok, napl\u00f3k, arch\u00edvumok, ...) a szekcion\u00e1l\u00e1si kulcs term\u00e9szetes v\u00e1laszt\u00e1sa a <b>esem\u00e9ny id\u0151pontja<\/b>. A mi eset\u00fcnkben az esem\u00e9ny az <u>\u00fczenet elk\u00fcld\u00e9si id\u0151pontja.<\/u>.<\/p>\n<p>Megjegyezz\u00fck, hogy a felhaszn\u00e1l\u00f3k szinte mindig <b>csak a \"legfrissebb\"<\/b> adatokkal dolgoznak \u2014 a leg\u00fajabb \u00fczeneteket olvass\u00e1k, a leg\u00fajabb napl\u00f3kat elemzik,\u2026 Nem, term\u00e9szetesen visszasorolhatnak az id\u0151ben, de ezt nagyon ritk\u00e1n teszik.<\/p>\n<p>Ezekb\u0151l a korl\u00e1toz\u00e1sokb\u00f3l nyilv\u00e1nval\u00f3, hogy az \u00fczenetek eset\u00e9ben az optim\u00e1lis megold\u00e1s a <b>\"napi\" szekci\u00f3k<\/b> \u2014 hiszen szinte mindig a felhaszn\u00e1l\u00f3k azt olvass\u00e1k, ami \"ma\" vagy \"tegnap\" \u00e9rkezett.<\/p>\n<p>Ha a nap folyam\u00e1n szinte csak egy szekci\u00f3ban \u00edrunk \u00e9s olvasunk, az m\u00e9g <b>hat\u00e9konyabb mem\u00f3ria- \u00e9s lemezhaszn\u00e1latot is eredm\u00e9nyez.<\/b> \u2014 mivel az \u00f6sszes szekci\u00f3 indexe k\u00e9nyelmesen elf\u00e9r a RAM-ban, ellent\u00e9tben a \"nagy \u00e9s vaskos\" t\u00e1bl\u00e1zattal.<\/p>\n<h2>l\u00e9p\u00e9sr\u0151l l\u00e9p\u00e9sre<\/h2>\n<p>\n\u00d6sszess\u00e9g\u00e9ben az el\u0151z\u0151ek egy folyamatos profitnak hangzanak. \u00c9s el\u00e9rhet\u0151, de ehhez j\u00f3l kell dolgoznunk \u2014 mert <u>egy entit\u00e1s szekcion\u00e1l\u00e1sa sz\u00fcks\u00e9gess\u00e9 teszi a hozz\u00e1 kapcsol\u00f3d\u00f3 \"darabol\u00e1st\" is<\/u>.<\/p>\n<h4>Az \u00fczenet, annak tulajdons\u00e1gai \u00e9s vet\u00fcletei<\/h4>\n<p>\nMivel \u00fagy d\u00f6nt\u00f6tt\u00fcnk, hogy az \u00fczeneteket d\u00e1tum szerint sz\u00e9tszedj\u00fck, az azokhoz kapcsol\u00f3d\u00f3 entit\u00e1sokat-tulajdons\u00e1gokat (mell\u00e9kletek, c\u00edmzett lista) is \u00e9rdemes sz\u00e9tv\u00e1lasztani, \u00e9s <b>szint\u00e9n az \u00fczenet d\u00e1tuma szerint<\/b>.<\/p>\n<p>Mivel az egyik tipikus feladatunk a levelez\u00e9si nyilv\u00e1ntart\u00e1sok (nem olvasott, bej\u00f6v\u0151, mindent) megtekint\u00e9se, ez\u00e9rt ezeket is logikusan \"be kell vonni\" az \u00fczenetek d\u00e1tum szerinti szekci\u00f3n\u00e1l\u00e1s\u00e1ba.<\/p>\n<p><img decoding=\"async\" alt=\"Messenger DB (Part 2): live partitioning\" src=\"\/wp-content\/uploads\/2020\/01\/5ea615ca97a2b865de537777c401038c.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<blockquote><p>Hozz\u00e1adjuk a szekcion\u00e1l\u00e1s kulcs\u00e1t (az \u00fczenet d\u00e1tum\u00e1t) minden t\u00e1bl\u00e1hoz: c\u00edmzettek, f\u00e1jl, nyilv\u00e1ntart\u00e1sok. Mag\u00e1ba az \u00fczenetbe nem sz\u00fcks\u00e9ges hozz\u00e1adni, haszn\u00e1lhatjuk a megl\u00e9v\u0151 D\u00e1tumId\u0151-t.<\/p><\/blockquote>\n<p><\/p>\n<h4>T\u00e9m\u00e1k<\/h4>\n<p>\nMivel a t\u00e9ma t\u00f6bb \u00fczenetre vonatkozik, azt m\u00e1r nem lehet ugyanabban a modellben \"sz\u00e9tv\u00e1gni\", valami m\u00e1sra kell t\u00e1maszkodnunk. Ebben az esetben t\u00f6k\u00e9letesen megfelel <b>az els\u0151 \u00fczenet d\u00e1tuma a levelez\u00e9sben<\/b> \u2014 teh\u00e1t a t\u00e9ma l\u00e9trehoz\u00e1s\u00e1nak pillanata.<\/p>\n<p><img decoding=\"async\" alt=\"Messenger DB (Part 2): live partitioning\" src=\"\/wp-content\/uploads\/2020\/01\/4f1336a9e229221f1e25ee8d3c08fb5e.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<blockquote><p>Hozz\u00e1adjuk a szekcion\u00e1l\u00e1s kulcs\u00e1t (a t\u00e9ma d\u00e1tum\u00e1t) minden t\u00e1bl\u00e1hoz: t\u00e9ma, r\u00e9sztvev\u0151.<\/p><\/blockquote>\n<p>\nDe most azonnal k\u00e9t probl\u00e9ma mer\u00fcl fel:<\/p>\n<ul>\n<li>melyik szekci\u00f3ban keress\u00fck az \u00fczeneteket a t\u00e9m\u00e1ban?<\/li>\n<li>melyik szekci\u00f3ban keress\u00fck a t\u00e9m\u00e1t az \u00fczenett\u0151l?<\/li>\n<\/ul>\n<p>\nTerm\u00e9szetesen lehet folytatni a keres\u00e9st az \u00f6sszes szekci\u00f3ban, de ez nagyon szomor\u00fa lenne, \u00e9s null\u00e1zza az \u00f6sszes nyeres\u00e9g\u00fcnket. Ez\u00e9rt, hogy tudjuk, hol keress\u00fcnk pontosan, logikai hivatkoz\u00e1sokat\/utal\u00e1sokat k\u00e9sz\u00edt\u00fcnk a szekci\u00f3kra:<\/p>\n<ul>\n<li>az \u00fczenetben hozz\u00e1adunk <b>egy mez\u0151t a t\u00e9ma d\u00e1tum\u00e1val<\/b><\/li>\n<li>a t\u00e9m\u00e1hoz hozz\u00e1adunk <b>a kapcsol\u00f3d\u00f3 \u00fczenetek d\u00e1tumait<\/b> e levelez\u00e9s (lehet k\u00fcl\u00f6n t\u00e1bl\u00e1zatban, vagy d\u00e1tumos t\u00f6mbk\u00e9nt is)<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Messenger DB (Part 2): live partitioning\" src=\"\/wp-content\/uploads\/2020\/01\/f7bfdc96c396ca37f46d876f185bf98e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMivel a k\u00fcl\u00f6nb\u00f6z\u0151 levelez\u00e9sekhez tartoz\u00f3 \u00fczenetek d\u00e1tumainak m\u00f3dos\u00edt\u00e1sai sz\u00e1mottev\u0151en kevesek lesznek (hiszen szinte minden \u00fczenet 1-2 szomsz\u00e9dos napon bel\u00fcl \u00e9rkezik), \u00e9n \u00e9ppen ezen a megold\u00e1son fogok \u00e1llni.<\/p>\n<p>\u00d6sszegz\u00e9s\u00fcl, az adatb\u00e1zisunk strukt\u00far\u00e1ja a k\u00f6vetkez\u0151 m\u00f3don alakult szekcion\u00e1l\u00e1s figyelembev\u00e9tel\u00e9vel:<\/p>\n<p><b class=\"spoiler_title\">T\u00e1bl\u00e1k: RU, a cirill bet\u0171s t\u00e1bl\u00e1zatok\/mez\u0151k elnevez\u00e9seir\u0151l val\u00f3 undorban jobb nem n\u00e9zni<\/b><\/p>\n<pre><code class=\"sql\">-- \u00fczenetek d\u00e1tum szerint\nCREATE TABLE \"\u00dczenet_YYYYMMDD\"(\n  \"\u00dczenet\"\n    uuid\n      PRIMARY KEY\n, \"T\u00e9ma\"\n    uuid\n, \"T\u00e9maD\u00e1tum\"\n    date\n, \"Szerz\u0151\"\n    uuid\n, \"D\u00e1tumId\u0151\" -- mint d\u00e1tum\n    timestamp\n, \"Sz\u00f6veg\"\n    text\n);\n\nCREATE TABLE \"C\u00edmzett_YYYYMMDD\"(\n  \"\u00dczenetD\u00e1tum\"\n    date\n, \"\u00dczenet\"\n    uuid\n, \"Szem\u00e9ly\"\n    uuid\n, PRIMARY KEY(\"\u00dczenet\", \"Szem\u00e9ly\")\n);\n\nCREATE TABLE \"F\u00e1jl_YYYYMMDD\"(\n  \"\u00dczenetD\u00e1tum\"\n    date\n, \"F\u00e1jl\"\n    uuid\n      PRIMARY KEY\n, \"\u00dczenet\"\n    uuid\n, \"BLOB\"\n    uuid\n, \"N\u00e9v\"\n    text\n);\n\nCREATE TABLE \"\u00dczenetekNapl\u00f3ja_YYYYMMDD\"(\n  \"\u00dczenetD\u00e1tum\"\n    date\n, \"Tulajdonos\"\n    uuid\n, \"NaploT\u00edpus\"\n    smallint\n, \"D\u00e1tumId\u0151\"\n    timestamp\n, \"\u00dczenet\"\n    uuid\n, PRIMARY KEY(\"Tulajdonos\", \"NaploT\u00edpus\", \"\u00dczenet\")\n);\nCREATE INDEX ON \"\u00dczenetekNapl\u00f3ja_YYYYMMDD\"(\"Tulajdonos\", \"NaploT\u00edpus\", \"D\u00e1tumId\u0151\" DESC);\n\n-- t\u00e9m\u00e1k d\u00e1tuma szerint\nCREATE TABLE \"T\u00e9ma_YYYYMMDD\"(\n  \"T\u00e9maD\u00e1tum\"\n    date\n, \"T\u00e9ma\"\n    uuid\n      PRIMARY KEY\n, \"Dokumentum\"\n    uuid\n, \"C\u00edm\"\n    text\n);\n\nCREATE TABLE \"T\u00e9maR\u00e9sztvev\u0151_YYYYMMDD\"(\n  \"T\u00e9maD\u00e1tum\"\n    date\n, \"T\u00e9ma\"\n    uuid\n, \"Szem\u00e9ly\"\n    uuid\n, PRIMARY KEY(\"T\u00e9ma\", \"Szem\u00e9ly\")\n);\n\nCREATE TABLE \"\u00dczenetekT\u00e9m\u00e1kD\u00e1tumai_YYYYMMDD\"(\n  \"T\u00e9maD\u00e1tum\"\n    date\n, \"T\u00e9ma\"\n    uuid\n      PRIMARY KEY\n, \"D\u00e1tum\"\n    date\n);\n<\/code><\/pre>\n<h2>P\u00e9nzt sp\u00f3rolunk<\/h2>\n<p>\nNos, ha nem a <noindex><a rel=\"nofollow\" href=\"https:\/\/postgrespro.ru\/docs\/postgresql\/10\/ddl-partitioning\">klasszikus szekcion\u00e1l\u00e1si m\u00f3dot<\/a><\/noindex> haszn\u00e1ljuk, amely az oszlop\u00e9rt\u00e9kek eloszl\u00e1s\u00e1n alapul (trigger-ek \u00e9s \u00f6r\u00f6kl\u0151d\u00e9s, vagy PARTITION BY), hanem \u201ek\u00e9zzel\u201d az alkalmaz\u00e1s szintj\u00e9n, akkor \u00e9szrevehetj\u00fck, hogy a szekcion\u00e1l\u00e1si kulcs \u00e9rt\u00e9ke m\u00e1r a t\u00e1bla nev\u00e9ben is t\u00e1rolva van.<\/p>\n<p>Ez\u00e9rt, ha annyira <b>agg\u00f3dsz a t\u00e1rolt adatok mennyis\u00e9ge miatt<\/b>, akkor ezekt\u0151l a \u201efelesleges\u201d mez\u0151kt\u0151l meg is lehet szabadulni, \u00e9s k\u00f6zvetlen\u00fcl hivatkozni a konkr\u00e9t t\u00e1bl\u00e1kra. Igaz, hogy ebben az esetben minden t\u00f6bb szekci\u00f3b\u00f3l sz\u00e1rmaz\u00f3 lek\u00e9rdez\u00e9st m\u00e1r az alkalmaz\u00e1s oldal\u00e1ra kell helyezni.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/483170\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041c\u044b \u0443\u0434\u0430\u0447\u043d\u043e \u0441\u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043d\u0430\u0448\u0435\u0439 PostgreSQL-\u0431\u0430\u0437\u044b \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u043a\u0438, \u043f\u0440\u043e\u0448\u0435\u043b \u0433\u043e\u0434, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u0435\u0435 \u043d\u0430\u043f\u043e\u043b\u043d\u044f\u044e\u0442, \u0432\u043e\u0442 \u0432 \u043d\u0435\u0439 \u0443\u0436\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u0438\u2026 \u0447\u0442\u043e-\u0442\u043e \u0432\u0441\u0435 \u043d\u0430\u0447\u0430\u043b\u043e \u043f\u043e\u0434\u0442\u043e\u0440\u043c\u0430\u0436\u0438\u0432\u0430\u0442\u044c. \u0427\u0430\u0441\u0442\u044c 1: \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u0443\u0435\u043c \u043a\u0430\u0440\u043a\u0430\u0441 \u0431\u0430\u0437\u044b \u0427\u0430\u0441\u0442\u044c 2: \u0441\u0435\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c \u00ab\u043d\u0430\u0436\u0438\u0432\u0443\u044e\u00bb \u0414\u0435\u043b\u043e \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0441 \u0440\u043e\u0441\u0442\u043e\u043c \u043e\u0431\u044a\u0435\u043c\u0430 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0440\u0430\u0441\u0442\u0435\u0442 \u0438 \u00ab\u0433\u043b\u0443\u0431\u0438\u043d\u0430\u00bb \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u2014 \u0445\u043e\u0442\u044c \u0438 \u043b\u043e\u0433\u0430\u0440\u0438\u0444\u043c\u0438\u0447\u0435\u0441\u043a\u0438. \u041d\u043e \u0441\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0435\u043c \u044d\u0442\u043e [&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":[688],"tags":[],"class_list":["post-55027","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041c\u044b \u0443\u0434\u0430\u0447\u043d\u043e \u0441\u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043d\u0430\u0448\u0435\u0439 PostgreSQL-\u0431\u0430\u0437\u044b \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u043a\u0438, \u043f\u0440\u043e\u0448\u0435\u043b \u0433\u043e\u0434, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u0435\u0435 \u043d\u0430\u043f\u043e\u043b\u043d\u044f\u044e\u0442, \u0432\u043e\u0442 \u0432 \u043d\u0435\u0439 \u0443\u0436\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u0438\u2026 \u0447\u0442\u043e-\u0442\u043e \u0432\u0441\u0435 \u043d\u0430\u0447\u0430\u043b\u043e \u043f\u043e\u0434\u0442\u043e\u0440\u043c\u0430\u0436\u0438\u0432\u0430\u0442\u044c. .\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"hu_HU\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0411\u0414 \u043c\u0435\u0441\u0441\u0435\u043d\u0434\u0436\u0435\u0440\u0430 (\u0447.2): \u0441\u0435\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c \u00ab\u043d\u0430\u0436\u0438\u0432\u0443\u044e\u00bb | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041c\u044b \u0443\u0434\u0430\u0447\u043d\u043e \u0441\u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043d\u0430\u0448\u0435\u0439 PostgreSQL-\u0431\u0430\u0437\u044b \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u043a\u0438, \u043f\u0440\u043e\u0448\u0435\u043b \u0433\u043e\u0434, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u0435\u0435 \u043d\u0430\u043f\u043e\u043b\u043d\u044f\u044e\u0442, \u0432\u043e\u0442 \u0432 \u043d\u0435\u0439 \u0443\u0436\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u0438\u2026 \u0447\u0442\u043e-\u0442\u043e \u0432\u0441\u0435 \u043d\u0430\u0447\u0430\u043b\u043e \u043f\u043e\u0434\u0442\u043e\u0440\u043c\u0430\u0436\u0438\u0432\u0430\u0442\u044c. .\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-01-09T21:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-02-18T11:03:06+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47A messengerek DB-je (2. r\u00e9sz): \u201e\u00e9l\u0151ben\u201d szekcion\u00e1lunk | ProHoster","description":"Sikeresen megtervezt\u00fck a PostgreSQL adatb\u00e1zisunk fel\u00e9p\u00edt\u00e9s\u00e9t a besz\u00e9lget\u00e9sek t\u00e1rol\u00e1s\u00e1ra, eltelt egy \u00e9v, a felhaszn\u00e1l\u00f3k akt\u00edvan felt\u00f6ltik, m\u00e1r milli\u00f3 bejegyz\u00e9s van benne, \u00e9s... elkezdett lassulni valami.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0411\u0414 \u043c\u0435\u0441\u0441\u0435\u043d\u0434\u0436\u0435\u0440\u0430 (\u0447.2): \u0441\u0435\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c \u00ab\u043d\u0430\u0436\u0438\u0432\u0443\u044e\u00bb | ProHoster","og:description":"\u041c\u044b \u0443\u0434\u0430\u0447\u043d\u043e \u0441\u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043d\u0430\u0448\u0435\u0439 PostgreSQL-\u0431\u0430\u0437\u044b \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u043a\u0438, \u043f\u0440\u043e\u0448\u0435\u043b \u0433\u043e\u0434, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u0435\u0435 \u043d\u0430\u043f\u043e\u043b\u043d\u044f\u044e\u0442, \u0432\u043e\u0442 \u0432 \u043d\u0435\u0439 \u0443\u0436\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u0438\u2026 \u0447\u0442\u043e-\u0442\u043e \u0432\u0441\u0435 \u043d\u0430\u0447\u0430\u043b\u043e \u043f\u043e\u0434\u0442\u043e\u0440\u043c\u0430\u0436\u0438\u0432\u0430\u0442\u044c. .","og:url":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/bd-messendzhera-ch-2-sektsioniruem-nazhivuyu","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2020-01-09T21:00:00+00:00","article:modified_time":"2020-02-18T11:03:06+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"55027","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-24 13:34:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 19:53:48","updated":"2026-01-24 13:34:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/55027","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=55027"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/55027\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=55027"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=55027"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=55027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}