![\"Ilmus](\"\/wp-content\/uploads\/2023\/03\/417fdc86dc7d80eb097e3f198f888020.jpg\")
<\/center> <\/p>\n5 GB andmete salvestamise testides n\u00f5udis Dragonfly 30% v\u00e4hem m\u00e4lu kui Redis. Snapshot'ide loomise ajal k\u00e4sku «bgsave» kasutades suureneb m\u00e4lutarve, kuid tipptasemel j\u00e4i see peaaegu kolm korda madalam kui Redis, samas kui snapshot'i kirjutamise operatsioon toimus m\u00e4rgatavalt kiiremini (Dragonfly snapshot salvestati testis 30 sekundiga, Redis aga 42 sekundiga). <\/p>\n
![\"Ilmus](\"\/wp-content\/uploads\/2023\/03\/ee8441f68081e5094bdaf20a54c1f918.jpg\")
<\/center> <\/p>\nKorke j\u00f5udlus saavutatakse t\u00e4nu multitehnoloogilisele arhitektuurile ilma ressursside jagamiseta (shared-nothing), mis eeldab, et iga teema seondub eraldi eraldi t\u00f6\u00f6tleja juurde koos oma andmepakiga, t\u00f6\u00f6tades ilma lukustuste ja spin-lockideta. Aatomilisuse tagamiseks mitme v\u00f5tmega t\u00f6\u00f6tamisel kasutatakse kergeid VLL lukustusi. Teabe t\u00f5husaks salvestamiseks m\u00e4lus kasutatakse struktuuri dashtable, mis rakendab sektsioonitud r\u00e4simistabeli varianti. <\/p>\n
M\u00f5ned Dragonfly v\u00f5imalused: <\/p>\n
- \n
- Vahem\u00e4lure\u017eiim, kus vana teave asendatakse automaatselt uuega, kui m\u00e4lu on t\u00e4is.\n
- Andmete eluea sidumise tugi, mille jooksul andmeid peetakse kehtivateks.\n
- Hoiustamise oleku tausts\u00fcsteemi taastamise tugi p\u00e4rast taask\u00e4ivitamist.\n
- HTTP-konsoli olemasolu (seotuna TCP-pordiga 6379) s\u00fcsteemi haldamiseks ja API m\u00f5\u00f5dikute edastamiseks, mis on \u00fchilduv Prometheusega.\n
- Toetatakse 185 Redis'i k\u00e4sku, mis vastab umbes Redis 5 v\u00e4ljaande funktsionaalsusele.\n
- Toetatakse k\u00f5iki Memcached'i k\u00e4sku, v\u00e4lja arvatud CAS (check-and-set).\n
- As\u00fcnkroonsete toimingute tugi hetkepiltide loomiseks.\n
- Ettearvatav m\u00e4lutarbimine.\n
- Sisseehitatud Lua 5.4 t\u00f5lk.\n
- Toetatakse keerulisi andmet\u00fc\u00fcpe, nagu r\u00e4sid, kogud, loendid (ZSET, HSET, LIST, SETS ja STRING) ning JSON-formaadis andmeid.\n
- Toetatakse salvestusreplikatsiooni, et tagada t\u00f5rkeotsing ja koormuse tasakaalustamine. <\/ul>\n
Dragonfly kood on kirjutatud keeltes C\/C++ ja levitatakse BSL (Business Source License) litsentsi alusel. BSL litsentsi pakkusid MySQL'i kaasasutajad alternatiivina Open Core mudelile. BSL-i olemus on see, et laiendatud funktsionaalsuse kood on algselt muudatuste tegemiseks saadaval, kuid mingil ajal saab seda tasuta kasutada ainult t\u00e4iendavate tingimuste t\u00e4itmise korral, mille v\u00e4ltimiseks on vajalik osta kommertsialitsents. Dragonfly projekti t\u00e4iendavad litsentsitingimused ette n\u00e4evad koodi \u00fclemineku Apache 2.0 litsentsile 15. m\u00e4rtsil 2028. Enne seda aega lubab litsents koodi kasutada ainult oma teenuste ja toodete t\u00f6\u00f6 tagamiseks, kuid keelab selle rakendamise tasuliste pilveteenuste loomiseks, mis on Dragonfly peal. <\/p>\n
Dragonfly 1.0 versioon on m\u00e4rkimisv\u00e4\u00e4rne, kuna see toetab andmete replikatsiooni peamiseks. serverilt<\/a> teiseks. Dragonfly't saab konfigureerida kasutada teise salvestusena, mis v\u00f5tab andmeid peamiselt nii Dragonfly kui Redis serverilt. Replikatsiooni juhtimise API on \u00fchilduv Redis'iga ja p\u00f5hineb k\u00e4skudel ROLE ja REPLICAOF (SLAVEOF).
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 Dragonfly, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u0443\u0435\u0442 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 \u043a\u043b\u044e\u0447\/\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u043a\u0430\u043a \u043b\u0435\u0433\u043a\u043e\u0432\u0435\u0441\u043d\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0432\u044b\u0441\u043e\u043a\u043e\u043d\u0430\u0433\u0440\u0443\u0436\u0435\u043d\u043d\u044b\u0445 \u0441\u0430\u0439\u0442\u043e\u0432, \u043a\u044d\u0448\u0438\u0440\u0443\u044e\u0449\u0435\u0435 \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u043a \u0421\u0423\u0411\u0414 \u0438 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0435 \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. Dragonfly \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b Memcached \u0438 Redis, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0443\u0436\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0438 \u0431\u0435\u0437 \u043f\u0435\u0440\u0435\u0440\u0430\u0431\u043e\u0442\u043a\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":107407,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-107406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Dragonfly 1.0 v\u00e4ljaanne, operatiivm\u00e4lu andmete vahem\u00e4lu s\u00fcsteem | ProHoster","description":"Oli v\u00e4lja antud Dragonfly andmete vahem\u00e4lu ja salvestuss\u00fcsteem, mis manipuleerib andmetega v\u00f5tme\/v\u00e4\u00e4rtuse formaadis ja v\u00f5ib toimida kergekaalulise lahendusena j\u00f5udluse 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