{"id":409,"date":"2021-07-13T04:40:35","date_gmt":"2021-07-13T04:40:35","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=409"},"modified":"2021-09-13T11:46:51","modified_gmt":"2021-09-13T11:46:51","slug":"what-is-cassandra-database-software","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/cassandra\/what-is-cassandra-database-software\/","title":{"rendered":"What is Cassandra database software ?"},"content":{"rendered":"<div class=\"TextHeading\">\n<div class=\"hddn\">\n<h2 id=\"cassandra-database-software\" class=\"color-purple\" style=\"text-align: justify;\">Cassandra database software<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Apache Cassandra is a simple and open-source provides NoSQL DBMS build to handle huge volume of data against more fabric servers.It providing high availability with no single point of failure.<\/li>\n<li>The performance of Cassandra place a high value. In 2012, University of Toronto researchers studying NoSQL systems resulted that \u201cScalability defined there is a clear winner throughout our experiments.Cassandra achieves the largest throughput for the large number of nodes in all experiments\u201d although \u201cit determine at the price of high write and read latencies.\u201d<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"ImageContent\" style=\"text-align: justify;\">\n<div class=\"hddn\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/cassandra\/cap-theorem.gif\" alt=\"cap theorem\" width=\"581\" height=\"307\" \/><\/div>\n<\/div>\n<h2 id=\"main-features\" style=\"text-align: justify;\">Main features:<\/h2>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"decentralized\" class=\"color-purple\">Decentralized<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Cluster contain every node has the same role.<\/li>\n<li>There is no single point of failure.<\/li>\n<li>To provides data across the cluster so every node have various data, but there is no master as every node can service if any request.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"text-center row\" style=\"text-align: justify;\"><\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"supports-replication-and-multi-data-center-replication\" class=\"color-purple\">Supports replication and multi data center replication:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Replication strategies are configurable.<\/li>\n<li>Cassandra is built as a distributed system, for deployment of maximum numbers of nodes across many data centers.<\/li>\n<li>Key features of Cassandra\u2019s distributed architecture are specifically change for multiple-data center deployment, for redundancy, for fail over and disaster recovery.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"scalability\" class=\"color-purple\">Scalability:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>As new machines are added read and write throughput both increase linearly, with the achieve of no halt or interrupt to applications.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"fault-tolerant\" class=\"color-purple\">Fault-tolerant<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Data is automatically replicated to many nodes for fault-tolerance. Replication across multiple data centers is maintained. Failed nodes can be changed with no downtime.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"ImageContent\" style=\"text-align: justify;\">\n<div class=\"hddn\"><img decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/cassandra\/cassandra.gif\" alt=\"cassandra\" width=\"508\" height=\"291\" \/><\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"tunable-consistency\" class=\"color-purple\">Tunable consistency<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Writes and reads gives a adjustable level of consistency, all the way from \u201cwrites never fail\u201d to \u201cblock for all replicas to be readable\u201d, with the quorum level in the middle.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"mapreduce-support\" class=\"color-purple\">MapReduce support<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Cassandra has Hadoop integration, with MapReduce support.<\/li>\n<li>There is support also for Apache Pig and Apache Hive.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"ImageContent\">\n<div class=\"hddn\" style=\"text-align: justify;\"><img decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/cassandra\/apache-cassandra.png\" alt=\"apache cassandra\" width=\"555\" height=\"516\" \/><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Answer : Apache Cassandra is a simple and open-source provides NoSQL DBMS build to handle huge volume of data against more fabric servers<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2642],"tags":[195,201,2657,2674,2661,1119,203,2653,2655,2656,2645,2662,2675,2670,2671,2672,2665,2651,2647,2660,2648,2643,2669,2659,2658,2644,2646,2673,2666,2667,2649,2652,2654,2650,199,214,363,209,283,2676,205,485,2664,196,212,712,2663,207,711,204,282,208,206,2677,200,2118,197,280,364,2668,216,285],"class_list":["post-409","post","type-post","status-publish","format-standard","hentry","category-cassandra","tag-accenture-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-apache-cassandra-architecture-diagram","tag-apache-cassandra-data-model","tag-apache-cassandra-interview-questions","tag-att-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-cassandra-architecture","tag-cassandra-architecture-diagram","tag-cassandra-architecture-internals","tag-cassandra-certification-sample-questions","tag-cassandra-clare-interview","tag-cassandra-create-database","tag-cassandra-database-design","tag-cassandra-database-example","tag-cassandra-database-hosting","tag-cassandra-database-software","tag-cassandra-database-tutorial","tag-cassandra-datastax","tag-cassandra-dba-interview-questions","tag-cassandra-facebook","tag-cassandra-frequently-asked-questions","tag-cassandra-graph-database","tag-cassandra-interview-questions","tag-cassandra-interview-questions-and-answers","tag-cassandra-multiple-choice-questions","tag-cassandra-nosql","tag-cassandra-show-databases","tag-cassandra-software","tag-cassandra-software-download","tag-cassandra-vs-hbase","tag-cassandra-vs-mongodb","tag-cassandra-vs-mysqlunderstanding-cassandra-architecture","tag-cassandra-windows","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-collabera-technologies-interview-questions-and-answers","tag-conduent-interview-questions-and-answers","tag-cvent-interview-questions-and-answers","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-ernst-young-interview-questions-and-answers","tag-how-to-use-cassandra","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-indiabulls-technology-solutions-ltd-interview-questions-and-answers","tag-interview-questions-on-cassandra","tag-mphasis-interview-questions-and-answers","tag-nagarro-software-pvt-ltd-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-persistent-systems-interview-questions-and-answers","tag-prokarma-softech-pvt-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-synechron-technologies-pvt-ltd-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-tecnotree-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtusa-consulting-services-pvt-ltd-interview-questions-and-answers","tag-wells-fargo-interview-questions-and-answers","tag-what-is-cassandra-software","tag-wipro-interview-questions-and-answers","tag-xoriant-solutions-pvt-ltd-interview-questions-and-answers"],"yoast_head":"<!-- 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