{"id":73789,"date":"2020-03-12T08:42:49","date_gmt":"2020-03-12T05:42:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/memcached-1-6-0-sistema-keshirovaniya-dannyh-v-ozu-s-vozmozhnostyu-sohraneniya-na-vneshnem-nositele"},"modified":"2020-03-12T08:42:49","modified_gmt":"2020-03-12T05:42:49","slug":"memcached-1-6-0-sistema-keshirovaniya-dannyh-v-ozu-s-vozmozhnostyu-sohraneniya-na-vneshnem-nositele","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/memcached-1-6-0-sistema-keshirovaniya-dannyh-v-ozu-s-vozmozhnostyu-sohraneniya-na-vneshnem-nositele","title":{"rendered":"Memcached 1.6.0 \u2014 egy adatcache rendszer az RAM-ban, lehet\u0151s\u00e9ggel k\u00fcls\u0151 t\u00e1rol\u00f3kra val\u00f3 ment\u00e9sre.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"


\n \"Memcached<\/p>\n

<\/a><\/p>\n

M\u00e1rcius 8-\u00e1n friss\u00fclt az operat\u00edv mem\u00f3ria alap\u00fa adatcache rendszer. Memcached<\/strong> a verzi\u00f3 el\u0151tt 1.6.0<\/strong>. A f\u0151 k\u00fcl\u00f6nbs\u00e9g az el\u0151z\u0151 kiad\u00e1sokhoz k\u00e9pest az, hogy most m\u00e1r lehet\u0151s\u00e9g van k\u00fcls\u0151 eszk\u00f6z haszn\u00e1lat\u00e1ra a cache t\u00e1rol\u00e1s\u00e1hoz.<\/p>\n

Memcached<\/strong> n\u00f6veli a magas terhel\u00e9s\u0171 weboldalak vagy webalkalmaz\u00e1sok teljes\u00edtm\u00e9ny\u00e9t az adatb\u00e1zisokhoz \u00e9s k\u00f6zbens\u0151 adatokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9s cache-el\u00e9s\u00e9vel.<\/p>\n

Az \u00faj verzi\u00f3 alap\u00e9rtelmez\u00e9s szerint tartalmazza a param\u00e9tert extstore<\/strong>, amely a k\u00fcls\u0151 t\u00e1rol\u00f3 haszn\u00e1lat\u00e1\u00e9rt felel\u0151s. A funkci\u00f3 letilt\u00e1s\u00e1hoz a .\\\/configure param\u00e9ter\u00e9be kell be\u00edrni a —disable-extstore lehet\u0151s\u00e9get. Az alap\u00e9rtelmezett telep\u00edt\u00e9s ellen\u00e9re a funkci\u00f3 haszn\u00e1lat\u00e1t k\u00f6zvetlen\u00fcl jelezni kell a futtat\u00e1s sor\u00e1n.<\/p>\n

Extstore<\/strong> k\u00fcls\u0151 t\u00e1rol\u00f3k haszn\u00e1lat\u00e1t teszi lehet\u0151v\u00e9 Flash<\/strong> vagy SSD<\/strong> a cache m\u00e9ret\u00e9nek n\u00f6vel\u00e9s\u00e9re. Ez lehet\u0151v\u00e9 teszi sokkal nagyobb adatmennyis\u00e9gek cache-el\u00e9s\u00e9t, mint en\u00e9lk\u00fcl a funkci\u00f3 n\u00e9lk\u00fcl.<\/p>\n

A m\u00e1sik fontos \u00fajdons\u00e1g a h\u00e1l\u00f3zati interakci\u00f3 \u00e1tdolgoz\u00e1sa lett, amely most m\u00e1r alkalmazkodik az egy rendszerh\u00edv\u00e1son bel\u00fcli csomagolt k\u00e9r\u00e9sek automatikus kezel\u00e9s\u00e9hez. Az el\u0151z\u0151 verzi\u00f3kban minden GET-k\u00e9r\u00e9s k\u00fcl\u00f6n csomagban ker\u00fclt feldolgoz\u00e1sra, m\u00edg az \u00faj verzi\u00f3ban t\u00f6bb k\u00e9r\u00e9s v\u00e1laszait egy meta-csomagba gy\u0171jtik \u00f6ssze \u00e9s egyszerre tov\u00e1bb\u00edtj\u00e1k. Ezen \u00fajdons\u00e1g k\u00f6vetkezt\u00e9ben 25% -kal cs\u00f6kkent a CPU terhel\u00e9s.<\/p>\n

Emellett ennek a fejleszt\u00e9snek k\u00f6sz\u00f6nhet\u0151en cs\u00f6kkent a mem\u00f3riafogyaszt\u00e1s a pufferel\u00e9s sor\u00e1n — 4,5 Kb-r\u00f3l 400-500 b\u00e1jtra h\u00edv\u00e1sonk\u00e9nt, \u00e9s cs\u00f6kkent a malloc, realloc \u00e9s free funkci\u00f3k haszn\u00e1lata is, ami a mem\u00f3riafragment\u00e1ci\u00f3 cs\u00f6kkent\u00e9s\u00e9hez vezetett. Minden sz\u00e1l most saj\u00e1t pufferpools-t kezel az akt\u00edv kapcsolatok olvas\u00e1s\u00e1ra \u00e9s \u00edr\u00e1s\u00e1ra. A pufferek m\u00e9ret\u00e9nek be\u00e1ll\u00edt\u00e1s\u00e1ra a -o resp_obj_mem_limit=N \u00e9s -o read_buf_mem_limit=N opci\u00f3k \u00e1llnak rendelkez\u00e9sre.<\/p>\n

A szerverrel val\u00f3 kommunik\u00e1ci\u00f3 r\u00e9gi bin\u00e1ris protokollj\u00e1nak elavultt\u00e1 nyilv\u00e1n\u00edt\u00e1s\u00e1t is bejelentett\u00e9k. A hely\u00e9re a meta protokoll l\u00e9pett — egy sz\u00f6veges v\u00e1ltozata a protokollnak t\u00f6m\u00f6r meta-parancsokkal. Az \u00faj protokoll figyelembe veszi az \u00f6sszes kor\u00e1bban el\u00e9rhet\u0151 m\u0171veletet, amely a r\u00e9gi bin\u00e1ris protokoll verzi\u00f3kat haszn\u00e1lta.<\/p>\n

<\/p>\n

>>> Hivatalos weboldal<\/a><\/p>\n

<\/noindex><\/noindex>
\n<\/p>\n

>>> Forr\u00e1sk\u00f3d<\/a> (BSD licenc)<\/p>\n

<\/noindex>
\n<\/p>\n

>>> Extstore le\u00edr\u00e1sa<\/a><\/p>\n

<\/noindex>
\n<\/p>\n

>>> Meta-parancsok le\u00edr\u00e1sa<\/a><\/p>\n

<\/noindex><\/p>\n

Forr\u00e1s: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

8\u0433\u043e \u043c\u0430\u0440\u0442\u0430 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u043e\u0441\u044c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043a\u0435\u0448\u0438\u0440\u043e\u0432\u0430\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 Memcached \u0434\u043e \u0432\u0435\u0440\u0441\u0438\u0438 1.6.0. \u041e\u0441\u043d\u043e\u0432\u043d\u043e\u0435 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0445 \u0440\u0435\u043b\u0438\u0437\u043e\u0432 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0442\u0435\u043f\u0435\u0440\u044c \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441\u0442\u0430\u043b\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0435\u0448\u043d\u0435\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e. Memcached \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \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 \u0438\u043b\u0438 \u0432\u0435\u0431-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043f\u0443\u0442\u0451\u043c \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0421\u0423\u0411\u0414 \u0438 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u043c \u0434\u0430\u043d\u043d\u044b\u043c. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u043f\u043e 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