{"id":100871,"date":"2021-07-29T16:23:28","date_gmt":"2021-07-29T14:23:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupna-subd-apache-cassandra-4-0"},"modified":"2021-07-29T16:23:28","modified_gmt":"2021-07-29T14:23:28","slug":"dostupna-subd-apache-cassandra-4-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/dostupna-subd-apache-cassandra-4-0","title":{"rendered":"Disponohet DBMS Apache Cassandra 4.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Organizata Apache Software Foundation ka prezantuar publikimin e sistemit t\u00eb menaxhimit t\u00eb t\u00eb dh\u00ebnave t\u00eb shp\u00ebrndara Apache Cassandra 4.0, e cila i p\u00ebrket klas\u00ebs noSQL dhe ka p\u00ebr q\u00ebllim krijimin e depozita t\u00eb shkall\u00ebzuara dhe t\u00eb besueshme p\u00ebr sasi t\u00eb m\u00ebdha t\u00eb dh\u00ebnash, t\u00eb ruajtura n\u00eb form\u00ebn e nj\u00eb matrice asociative (hash). Publikimi i Cassandra 4.0 \u00ebsht\u00eb konsideruar i gatsh\u00ebm p\u00ebr zbatime t\u00eb pun\u00ebs dhe \u00ebsht\u00eb testuar tashm\u00eb n\u00eb infrastruktura t\u00eb kompanive si Amazon, Apple, DataStax, Instaclustr, iland dhe Netflix me klaster\u00eb q\u00eb p\u00ebrfshijn\u00eb m\u00eb shum\u00eb se 1000 nyje. Kodi i projektit \u00ebsht\u00eb shkruar n\u00eb gjuh\u00ebn Java dhe shp\u00ebrndahet n\u00ebn licenc\u00ebn Apache 2.0.     <\/p>\n<p>\u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u0421\u0423\u0411\u0414 Cassandra \u0431\u044b\u043b\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u0430 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Facebook \u0438 \u0432 2009 \u0433\u043e\u0434\u0443 \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u0430 \u043f\u043e\u0434 \u043f\u043e\u043a\u0440\u043e\u0432\u0438\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u0444\u043e\u043d\u0434\u0430 Apache. \u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043d\u0430 \u0431\u0430\u0437\u0435 Cassandra \u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u044b \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432 \u0442\u0430\u043a\u0438\u0445 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439, \u043a\u0430\u043a Apple, Adobe, CERN, Cisco, IBM, HP, Comcast, Disney, eBay, Huawei, Netflix, Sony, Rackspace, Reddit \u0438 Twitter.  \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0440\u0430\u0437\u0432\u0451\u0440\u043d\u0443\u0442\u0430\u044f \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Apple \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430  \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043d\u0430 \u0431\u0430\u0437\u0435  Apache Cassandra \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0435\u0442 \u0431\u043e\u043b\u0435\u0435 \u0442\u044b\u0441\u044f\u0447\u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0445 160 \u0442\u044b\u0441\u044f\u0447 \u0443\u0437\u043b\u043e\u0432 \u0438  \u0445\u0440\u0430\u043d\u044f\u0449\u0438\u0445 \u0431\u043e\u043b\u0435\u0435 100 \u043f\u0435\u0442\u0430\u0431\u0430\u0439\u0442 \u0434\u0430\u043d\u043d\u044b\u0445. \u0412 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Huawei  \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 300 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u043e\u0432 Apache Cassandra,  \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0445 30 \u0442\u044b\u0441\u044f\u0447 \u0443\u0437\u043b\u043e\u0432, \u0430 \u0432 Netflix &#8212; \u0431\u043e\u043b\u0435\u0435 100 \u043a\u043b\u0430\u0441\u0442\u0440\u043e\u0432, \u043e\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0445 10 \u0442\u044b\u0441\u044f\u0447 \u0443\u0437\u043b\u043e\u0432 \u0438 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0445 \u0431\u043e\u043b\u0435\u0435 \u0442\u0440\u0438\u043b\u043b\u0438\u043e\u043d\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432 \u0434\u0435\u043d\u044c.     <\/p>\n<p>\u0421\u0423\u0411\u0414 Cassandra \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u044f\u0435\u0442 \u0432 \u0441\u0435\u0431\u0435 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u0443\u044e hash-\u0441\u0438\u0441\u0442\u0435\u043c\u0443 Dynamo, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0443\u044e \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043b\u0438\u043d\u0435\u0439\u043d\u0443\u044e \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u0438 \u043e\u0431\u044a\u0451\u043c\u0430 \u0434\u0430\u043d\u043d\u044b\u0445. Cassandra \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u043c\u043e\u0434\u0435\u043b\u044c \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0430 \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 (ColumnFamily), \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0443\u044e\u0441\u044f \u043e\u0442 \u0441\u0438\u0441\u0442\u0435\u043c \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 memcachedb, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0445\u0440\u0430\u043d\u044f\u0442 \u0434\u0430\u043d\u043d\u044b\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0441\u0432\u044f\u0437\u043a\u0435 \u043a\u043b\u044e\u0447\/\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0445\u044d\u0448\u0435\u0439 \u0441 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u0443\u0440\u043e\u0432\u043d\u044f\u043c\u0438 \u0432\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0441\u0442\u0438.   \u0414\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441 \u0411\u0414 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u044f\u0437\u044b\u043a \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 CQL (Cassandra Query Language), \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u044e\u0449\u0438\u0439 SQL, \u043d\u043e  \u0443\u0440\u0435\u0437\u0430\u043d\u043d\u044b\u0439 \u043f\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u0418\u0437 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432 \u0438\u043c\u0451\u043d \u0438 \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432 \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432, \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u0447\u0435\u0440\u0435\u0437 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 &#171;CREATE INDEX&#187;.      <\/p>\n<p>Sistemi i menaxhimit t\u00eb t\u00eb dh\u00ebnave lejon krijimin e ruajtjeve t\u00eb q\u00ebndrueshme ndaj d\u00ebshtimeve: t\u00eb dh\u00ebnat e vendosura n\u00eb baz\u00ebn e t\u00eb dh\u00ebnave automatikisht kopjohen n\u00eb disa nyje t\u00eb rrjetit t\u00eb shp\u00ebrndar\u00eb, i cili mund t\u00eb mbuloj\u00eb t\u00eb ndryshme <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sq\/kompaniya\/data-centers\/\"   title=\"qendra t\u00eb p\u00ebrpunimit t\u00eb t\u00eb dh\u00ebnave\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4642\">qendra t\u00eb p\u00ebrpunimit t\u00eb t\u00eb dh\u00ebnave<\/a>. N\u00eb rast t\u00eb nj\u00eb d\u00ebshtimi t\u00eb nyj\u00ebs, funksionet e saj kapen n\u00eb koh\u00eb reale nga nyje t\u00eb tjera. Shtimi i nyjeve t\u00eb reja n\u00eb klaster dhe azhurnimi i versionit t\u00eb Cassandra b\u00ebhet n\u00eb koh\u00eb reale, pa nd\u00ebrhyrje manuale shtes\u00eb dhe pa rikonfigurimin e nyjeve t\u00eb tjera. T\u00eb dyjat me mb\u00ebshtetje p\u00ebr CQL jan\u00eb p\u00ebrgatitur p\u00ebr gjuh\u00ebt Python, Java (JDBC\/DBAPI2), Ruby, PHP, C++ dhe JavaScript (Node.js).        <\/p>\n<p>T\u00eb rejat kryesore:   <\/p>\n<ul>\n<li class=\"l\"> Ka rritur performanc\u00ebn dhe shkall\u00ebzimin. Ka rritur efikasitetin e shk\u00ebmbimit t\u00eb t\u00eb dh\u00ebnave n\u00eb formatin SSTable (Sorted Strings Table) midis nyjeve. Protokolli i shk\u00ebmbimit t\u00eb mesazheve midis nyjeve \u00ebsht\u00eb optimizuar (Internode Messaging Protocol). Shpejt\u00ebsia e transferimit t\u00eb rrjedhave t\u00eb dh\u00ebnash midis nyjeve \u00ebsht\u00eb rritur deri n\u00eb 5 her\u00eb (n\u00eb m\u00ebnyr\u00eb t\u00eb kryesore p\u00ebr shkak t\u00eb aplikimit t\u00eb teknik\u00ebs Zero Copy dhe transferimit t\u00eb SSTable-ve t\u00eb t\u00ebra), dhe kapaciteti p\u00ebr operacione leximi dhe shkruajtur deri n\u00eb 25%. Procesi i rikuperimit inkremental \u00ebsht\u00eb optimizuar. Vonesat p\u00ebr shkak t\u00eb pezullimit t\u00eb mbledh\u00ebsit t\u00eb mbeturinave jan\u00eb reduktuar n\u00eb disa milisekonda.\n<li class=\"l\"> Ka shtuar mb\u00ebshtetje p\u00ebr logun e auditit, i cili lejon ndjekjen e operacioneve t\u00eb autentifikimit t\u00eb p\u00ebrdoruesve dhe t\u00eb gjitha k\u00ebrkesat q\u00eb kryhen CQL.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0431\u0438\u043d\u0430\u0440\u043d\u043e\u0433\u043e \u043b\u043e\u0433\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u0442\u044c \u0432\u0435\u0441\u044c \u0442\u0440\u0430\u0444\u0438\u043a \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0438 \u043e\u0442\u0432\u0435\u0442\u043e\u0432.   \u0414\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u044b \u043a\u043e\u043c\u0430\u043d\u0434\u044b &#171;nodetool enablefullquerylog|disablefullquerylog|resetfullquerylog&#187;, \u0430 \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u043b\u043e\u0433\u0430 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0443\u0442\u0438\u043b\u0438\u0442\u0430 fqltool. \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043b\u043e\u0433\u0430 \u0432 \u0447\u0438\u0442\u0430\u0435\u043c\u044b\u0439 \u0432\u0438\u0434 (Dump), \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0441\u0440\u0435\u0437\u043e\u0432 \u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438 (Compare) \u0438 \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f (Replay)  \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 c \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d\u0438\u0435\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u0439, \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0435.\n<li class=\"l\"> Ka shtuar mb\u00ebshtetje p\u00ebr tabela virtuale, t\u00eb cilat nuk pasqyrojn\u00eb t\u00eb dh\u00ebnat e ruajtura n\u00eb SSTables, por informacionin e paraqitur p\u00ebrmes API-t (metrika e performanc\u00ebs, informacion mbi cil\u00ebsimet, p\u00ebrmbajtja e caches, informacion mbi klient\u00ebt e lidhur, etj.).\n<li class=\"l\"> Ka rritur efikasitetin e ruajtjes s\u00eb t\u00eb dh\u00ebnave n\u00eb form\u00eb t\u00eb comprimit, duke lejuar uljen e konsumit t\u00eb hap\u00ebsir\u00ebs n\u00eb disqet dhe rritjen e performanc\u00ebs s\u00eb operacioneve t\u00eb leximit.\n<li class=\"l\"> T\u00eb dh\u00ebnat q\u00eb i p\u00ebrkasin hap\u00ebsir\u00ebs sistemike t\u00eb \u00e7el\u00ebsave (system.*) tani vendosen automatikisht n\u00eb direktorin\u00eb e par\u00eb n\u00eb vend t\u00eb shp\u00ebrndarjes n\u00eb t\u00eb gjitha direktorit\u00eb me t\u00eb dh\u00ebna, duke ruajtur funksionalitetin e nyj\u00ebs n\u00eb rast t\u00eb d\u00ebshtimit t\u00eb nj\u00eb nga disqet shtes\u00eb.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar mb\u00ebshtetje eksperimentale p\u00ebr replikimin e p\u00ebrkohsh\u00ebm (Transient Replication) dhe kuorumet e lehta (Cheap Quorums). Replikat e p\u00ebrkohshme nuk ruajn\u00eb t\u00eb dh\u00ebna t\u00eb plota dhe p\u00ebrdorin rikuperim inkremental p\u00ebr t'u koordinuar me replikat e plota. Kuorumet e lehta realizojn\u00eb optimizimin e operacioneve t\u00eb shkruar, ku shkrimi n\u00eb replikat e p\u00ebrkohshme nuk b\u00ebhet derisa t\u00eb jet\u00eb i disponuesh\u00ebm nj\u00eb set i mjaftuesh\u00ebm i replikave t\u00eb plota.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar mb\u00ebshtetje eksperimentale p\u00ebr Java 11.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar nj\u00eb opsion eksperimental p\u00ebr t\u00eb krahasuar t\u00eb gjitha pem\u00ebt Merkle (Merkle Tree). P\u00ebr shembull, aktivizimi i opsionit n\u00eb nj\u00eb klaster me 3 nyje, n\u00eb t\u00eb cilin dy replikat jan\u00eb t\u00eb nj\u00ebjta dhe nj\u00eb \u00ebsht\u00eb e vjetruar, do t\u00eb rezultoj\u00eb n\u00eb p\u00ebrdit\u00ebsimin e replik\u00ebs s\u00eb vjetruar duke p\u00ebrdorur vet\u00ebm nj\u00eb operacion kopjimi t\u00eb replik\u00ebs aktuale.\n<li class=\"l\"> K\u00ebtu jan\u00eb shtuar funksionet e reja currentTimestamp, currentDate, currentTime dhe currentTimeUUID.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr operacionet aritmetike n\u00eb pyetjet CQL.\n<li class=\"l\"> \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u043c\u0435\u0436\u0434\u0443 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0441 \u0442\u0438\u043f\u0430\u043c\u0438  &#171;timestamp&#187;\/&#187;date&#187; \u0438  &#171;duration&#187;.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u0436\u0438\u043c \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u043f\u043e\u0442\u043e\u043a\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u043b\u044f \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f (nodetool repair &#8212;preview) \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (nodetool repair &#8212;validate).\n<li class=\"l\"> N\u00eb pyetjet SELECT \u00ebsht\u00eb b\u00ebr\u00eb e mundur p\u00ebrpunimi i elementeve Map dhe Set.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr paralelizimin e faz\u00ebs fillestare t\u00eb nd\u00ebrtimit t\u00eb pamjeve materializuese (cassandra.yaml:concurrent_materialized_view_builders).\n<li class=\"l\"> \u0412 \u043a\u043e\u043c\u0430\u043d\u0434\u0435 &#171;nodetool cfstats&#187; \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0438 \u043f\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u043c \u043c\u0435\u0442\u0440\u0438\u043a\u0430\u043c \u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0447\u0438\u0441\u043b\u0430 \u0432\u044b\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0441\u0442\u0440\u043e\u043a.\n<li class=\"l\"> K\u00ebtu jan\u00eb ofruar cil\u00ebsime p\u00ebr t\u00eb kufizuar qasjen e p\u00ebrdoruesit vet\u00ebm n\u00eb qendra t\u00eb caktuara t\u00eb t\u00eb dh\u00ebnave.\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb shtuar mund\u00ebsia p\u00ebr t\u00eb kufizuar intensitetin (rate limit) e operacioneve t\u00eb krijimit dhe pastrimit t\u00eb kopjeve rezerv\u00eb.\n<li class=\"l\"> N\u00eb cqlsh dhe cqlshlib \u00ebsht\u00eb realizuar mb\u00ebshtetje p\u00ebr Python 3 (mb\u00ebshtetja p\u00ebr Python 2.7 vazhdon t\u00eb ruhet).\n<li class=\"l\"> K\u00ebtu \u00ebsht\u00eb nd\u00ebrprer\u00eb mb\u00ebshtetje p\u00ebr platform\u00ebn Windows. P\u00ebr t\u00eb ekzekutuar Cassandra n\u00eb Windows, rekomandohet p\u00ebrdorimi i mjediseve Linux, t\u00eb krijuara n\u00eb p\u00ebrputhje me n\u00ebn-sistemin WSL2 (Windows Subsystem for Linux 2) ose sistemet e virtualizimit.      <\/ul>\n<p>    <center>  <div class=\"youtube-placeholder\" data-id=\"kOf29M8qFts\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/kOf29M8qFts\/hqdefault.jpg\" alt=\"Luaj videon\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div>  <\/center><br \/>\n<br \/>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55561\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Apache Software Foundation \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 Apache Cassandra 4.0, \u043e\u0442\u043d\u043e\u0441\u044f\u0449\u0435\u0439\u0441\u044f \u043a \u043a\u043b\u0430\u0441\u0441\u0443 noSQL-\u0441\u0438\u0441\u0442\u0435\u043c \u0438 \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u043d\u043d\u043e\u0439 \u043d\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u0438 \u043d\u0430\u0434\u0451\u0436\u043d\u044b\u0445 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449 \u043e\u0433\u0440\u043e\u043c\u043d\u044b\u0445 \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445, \u0445\u0440\u0430\u043d\u0438\u043c\u044b\u0445 \u0432 \u0444\u043e\u0440\u043c\u0435 \u0430\u0441\u0441\u043e\u0446\u0438\u0430\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u043c\u0430\u0441\u0441\u0438\u0432\u0430 (\u0445\u044d\u0448\u0430). \u0412\u044b\u043f\u0443\u0441\u043a Cassandra 4.0 \u043f\u0440\u0438\u0437\u043d\u0430\u043d \u0433\u043e\u0442\u043e\u0432\u044b\u043c \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0447\u0438\u0445 \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u0439 \u0438 \u0443\u0436\u0435 \u043f\u0440\u043e\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d \u0432 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u0445 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439 Amazon, Apple, DataStax, Instaclustr, iland \u0438 Netflix c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430\u043c\u0438, [&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-100871","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Apache Software Foundation \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 Apache Cassandra 4.0, \u043e\u0442\u043d\u043e\u0441\u044f\u0449\u0435\u0439\u0441\u044f \u043a \u043a\u043b\u0430\u0441\u0441\u0443 noSQL-\u0441\u0438\u0441\u0442\u0435\u043c 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