{"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\/ro\/blog\/news\/memcached-1-6-0-sistema-keshirovaniya-dannyh-v-ozu-s-vozmozhnostyu-sohraneniya-na-vneshnem-nositele","title":{"rendered":"Memcached 1.6.0 \u2014 sistem\u0103 de cache a datelor \u00een RAM cu posibilitatea de salvare pe un suport extern","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"


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

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

Pe 8 martie a avut loc actualizarea sistemului de cache a datelor \u00een memoria operativ\u0103 Memcached<\/strong> p\u00e2n\u0103 la versiunea 1.6.0<\/strong>. Principala diferen\u021b\u0103 fa\u021b\u0103 de versiunile anterioare este c\u0103 acum pentru stocarea datelor cache este posibil s\u0103 se foloseasc\u0103 un dispozitiv extern.<\/p>\n

Memcached<\/strong> este utilizat pentru a accelera func\u021bionarea site-urilor sau aplica\u021biilor web cu \u00eenc\u0103rcare mare prin cache-area accesului la SGBD \u0219i date intermediare.<\/p>\n

\u00cen noua versiune, la compilare, este activat\u0103 implicit op\u021biunea extstore<\/strong>, care r\u0103spunde de utilizarea unit\u0103\u021bilor externe. Pentru a dezactiva func\u021bia, trebuie s\u0103 specifica\u021bi parameterul -disable-extstore \u00een .\\\/configure. Cu toate acestea, \u00een ciuda configura\u021biei implicite active, trebuie s\u0103 specifica\u021bi utilizarea acestei func\u021bii la pornire.<\/p>\n

Extstore<\/strong> permite utilizarea unor Flash<\/strong> sau SSD<\/strong> suporturi externe pentru a cre\u0219te dimensiunea cache-ului. Acest lucru va permite cache-are unor volume de date mult mai mari dec\u00e2t f\u0103r\u0103 folosirea acestei func\u021bii.<\/p>\n

O alt\u0103 noutate important\u0103 a fost reproiectarea interac\u021biunii de re\u021bea, care acum este adaptat\u0103 pentru procesarea automat\u0103 a apelurilor de tip batch \u00eentr-un singur apel de sistem. \u00cen versiunile anterioare, fiecare solicitare GET era transmis\u0103 \u00eentr-un pachet separat, \u00een timp ce \u00een noua versiune r\u0103spunsurile la mai multe solicit\u0103ri sunt adunate \u00eentr-un singur metapachet \u0219i trimise o dat\u0103. Ca rezultat al acestei inova\u021bii, sarcina pe CPU a fost redus\u0103 cu 25%.<\/p>\n

De asemenea, ca rezultat al acestei moderniz\u0103ri, consumul de memorie pentru tamponizare a fost redus \u2014 de la 4,5 Kb la 400-500 de bi\u021bi pe apel, iar utilizarea func\u021biilor malloc, realloc \u0219i free a fost sc\u0103zut\u0103, ceea ce a dus la o fragmentare mai mic\u0103 a memoriei. Fiecare fir de execu\u021bie proceseaz\u0103 acum propriul s\u0103u pool de buferi pentru citire \u0219i scriere pentru conexiunile active. Op\u021biunile -o resp_obj_mem_limit=N \u0219i -o read_buf_mem_limt=N sunt disponibile pentru a configura dimensiunea acestor buferi.<\/p>\n

De asemenea, a fost anun\u021bat trecerea la categoria \u201e\u00eenvechit\u201d a protocolului binar de transfer cu serverul. Acesta a fost \u00eenlocuit de protocolul meta \u2014 o variant\u0103 text a protocolului, cu comenzi meta compacte. \u00cen noul protocol sunt incluse toate opera\u021biile disponibile anterior, care utilizau vechile versiuni ale protocolului binar.<\/p>\n

<\/p>\n

>>> Site oficial<\/a><\/p>\n

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

>>> Codul surs\u0103<\/a> (licen\u021b\u0103 BSD)<\/p>\n

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

>>> Descriere Extstore<\/a><\/p>\n

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

>>> Descrierea meta-comenzilor<\/a><\/p>\n

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

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

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":73790,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-73789","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\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\udd47Memcached 1.6.0 \u2014 sistem de caching pentru date \u00een RAM, cu posibilitatea de a salva pe un mediu extern | 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