{"id":18267,"date":"2018-06-11T04:04:42","date_gmt":"2018-06-11T04:04:42","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=18267"},"modified":"2021-04-05T13:45:16","modified_gmt":"2021-04-05T08:15:16","slug":"cassandra-cluster","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/cassandra-cluster\/","title":{"rendered":"What is Cassandra Cluster &amp; Cluster Builder"},"content":{"rendered":"<div class='__iawmlf-post-loop-links' style='display:none;' data-iawmlf-post-links='[{&quot;id&quot;:1914,&quot;href&quot;:&quot;http:\\\/\\\/cassandra.apache.org&quot;,&quot;archived_href&quot;:&quot;http:\\\/\\\/web-wp.archive.org\\\/web\\\/20210725052557\\\/http:\\\/\\\/cassandra.apache.org\\\/&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2025-12-10 08:13:30&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2025-12-13 21:02:59&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2025-12-16 22:40:09&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2025-12-21 09:37:11&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2025-12-26 12:16:50&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2025-12-29 18:03:35&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-03 15:18:30&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-07 19:10:53&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-11 05:40:10&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-14 16:16:42&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-17 20:58:21&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-22 13:32:11&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-25 13:38:32&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-01-29 13:35:59&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-01 23:23:53&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-05 07:02:58&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-08 15:02:49&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-12 11:23:22&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-17 09:37:29&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-22 06:36:03&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-25 14:12:52&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-02-28 22:39:30&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-04 13:09:40&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-09 01:26:10&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-12 22:16:19&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-17 10:58:32&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-21 03:00:05&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-25 03:59:29&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-03-29 05:19:54&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-03 03:15:28&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-08 01:52:27&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-11 04:13:23&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-15 03:31:18&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-18 09:11:57&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-21 12:26:09&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-25 00:02:08&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-28 09:41:34&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-03 14:39:42&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-12 05:46:00&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-15 07:21:42&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-18 15:30:40&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-21 18:51:09&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-25 07:17:54&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-28 14:01:44&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-31 15:35:15&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-06-04 05:55:00&quot;,&quot;http_code&quot;:206}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-06-04 05:55:00&quot;,&quot;http_code&quot;:206},&quot;process&quot;:&quot;done&quot;}]'><\/div>\n<h2>1. Cassandra Cluster<\/h2>\n<p><span style=\"font-weight: 400\">In this <a href=\"https:\/\/data-flair.training\/blogs\/apache-cassandra-tutorial\/\"><strong>Cassandra tutorial<\/strong><\/a>, we will go through one of the main parts of the Cassandra database i.e. Cassandra Cluster. Moreover, we will see the meaning of Cluster and different layers in Cluster.<\/span><span style=\"font-weight: 400\">\u00a0<\/span><span style=\"font-weight: 400\">This article will guide through the parts of the cluster and the builders associated with<\/span> <span style=\"font-weight: 400\">it.<\/span><\/p>\n<p>So, let&#8217;s start Cassandra Cluster.<\/p>\n<div id=\"attachment_18282\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-18282\" class=\"wp-image-18282 size-full\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01.jpg\" alt=\"Cassandra Cluster\" width=\"1200\" height=\"628\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01.jpg 1200w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01-150x79.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01-300x157.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01-768x402.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Cassandra-cluster-01-1024x536.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-18282\" class=\"wp-caption-text\">What is Cassandra Cluster &amp; Cluster Builder<\/p><\/div>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-quiz-questions\/\">Test Your Cassandra Knowledge in just 3 minutes<\/a><\/strong><\/p>\n<h2>2. What is Cluster?<\/h2>\n<p><span style=\"font-weight: 400\">The cluster is a collection of nodes that represents a single system. A cluster in Cassandra is one of the shells in the whole Cassandra database. Many Cassandra Clusters combine together to form the database in Cassandra. <\/span><\/p>\n<p><span style=\"font-weight: 400\">A Cluster is basically the outermost shell or storage unit in a database. The Cassandra Cluster contains many different layers of storage units. Each layer contains the other.<\/span><br \/>\n<strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-applications\/\">Let&#8217;s Explore Cassandra Applications<\/a><\/strong><br \/>\n<span style=\"font-weight: 400\">The following are different layers in a Cassandra Cluster:<\/span><\/p>\n<div id=\"attachment_18283\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-18283\" class=\"wp-image-18283 size-full\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased.png\" alt=\"Casandra Cluster\" width=\"1200\" height=\"628\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased.png 1200w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased-150x79.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased-300x157.png 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased-768x402.png 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/06\/Untitlsaaased-1024x536.png 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-18283\" class=\"wp-caption-text\">Casandra Cluster &#8211; Different layers in Cluster<\/p><\/div>\n<h3>a. Node Cluster<\/h3>\n<p><span style=\"font-weight: 400\">Node is the second layer in a cluster. This layer basically comprises of systems or computers or storage units. Each cluster may contain many nodes or systems. These systems or nodes are connected together. <\/span><\/p>\n<p><span style=\"font-weight: 400\">They collectively share data through the replication in Cassandra and independently as well. The replication factor in the nodes allows the user to have a redundancy for the data stored.<\/span><\/p>\n<h3>b. Keyspace<\/h3>\n<p><span style=\"font-weight: 400\">The keyspace is the next layer of the storage. In a node, there are many keyspaces. These keyspaces are basically the outermost storage unit in a system. They contain the main data. The data distributed according to their properties or areas.<\/span><br \/>\n<strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-api\/\">Let&#8217;s revise Cassandra API<\/a><\/strong><\/p>\n<h3>c. Column Families<\/h3>\n<p><span style=\"font-weight: 400\">The next layer is the column families. The keyspace is further divided into column families. These column families have different areas or headings under which the data is distributed. In a keyspace, these column families are categorized into different headings or titles. <\/span><\/p>\n<p><span style=\"font-weight: 400\">These titles further contain different layers of storage units. These column families can also be characterized by tables. The column families differ from the tables through their APIs.<\/span><\/p>\n<h3>d. Rows<\/h3>\n<p><span style=\"font-weight: 400\">The next layer in the database is of the Rows as according to column families. The Rows are basically the classification under which the column family is divided. These classifications, in turn, create specific distribution criteria for the entries. \u00a0\u00a0<\/span><br \/>\n<strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-architecture\/\">Let&#8217;s discuss Cassandra Architecture.<\/a><\/strong><\/p>\n<h3>e. Column<\/h3>\n<p><span style=\"font-weight: 400\">This is the innermost layer in a database. The column basically is divided into different titles or headings. These headings contain the main data regarding the specific entry.<\/span><\/p>\n<h2>3. Cluster Builder<\/h2>\n<p><span style=\"font-weight: 400\">The cluster is the main entrance for the data into the database. The driver of this belongs to <strong>com.datastax.driver.core<\/strong> package. Using a set of commands user can initiate the Cluster Builder. This allows the user to perform various detailed operations while building a cluster. <\/span><\/p>\n<p><span style=\"font-weight: 400\">The Cassandra Cluster Builder is basically an interface that holds connections to the clusters. This is also helpful to execute CQL queries and statements.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Different commands and methods are used to perform various operations in Cassandra Cluster Builder.<\/span><\/p>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-data-types\/\">Have a look at Cassandra Data Types<\/a><\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>Session connect():<\/strong>\u00a0It allows the user to create a new session on the cluster. Apart from this it initializes the new session.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>void close():<\/strong> It allows the user to close the cluster session instance.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>static Cluster.Builder builder():<\/strong> It allows the user to create a new Cluster.Builder instance.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>Cluster.Builder addContactPoint():<\/strong> This allows the user to add a contact point a cluster.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>Cluster build():<\/strong> This command allows the user to build a cluster with the given or default contact points.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>ResultSet execute():<\/strong> This allows the user to execute a query. The query may contain a statement object or it may be a string object.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"><strong>PreparedStatement prepare():<\/strong> This allows the user to prepare a provided query. This query can be provided either in the form of a statement or a string.<\/span><\/li>\n<\/ul>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/data-definition-command-cql\/\">Read Data Definition Command \u2013 Cassandra Query Language<\/a><\/strong><br \/>\nSo, this was all about Cassandra Clustering. Hope you like our explanation.<\/p>\n<h2>4. Conclusion<\/h2>\n<p><span style=\"font-weight: 400\">Hence, in this Cassandra Cluster tutorial, we went through Cassandra Cluster. Moreover, we saw different layers in Cluster that are a node, keyspace, column families, rows, and column. Also, we\u00a0discussed the Cluster Builder. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Next, we will see Cassandra quiz. The quiz will allow you to test your knowledge that you gained through these articles. Still, if any doubt,\u00a0ask in the comment tab.<\/span><br \/>\n<strong>See also &#8211;\u00a0\u00a0<\/strong><br \/>\n<strong><a href=\"https:\/\/data-flair.training\/blogs\/cassandra-shell-commands\/\">9 Cassandra Shell Commands \u2013 You Must Know<\/a><\/strong><br \/>\n<strong><a href=\"http:\/\/cassandra.apache.org\/\">For reference\u00a0<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Cassandra Cluster In this Cassandra tutorial, we will go through one of the main parts of the Cassandra database i.e. Cassandra Cluster. Moreover, we will see the meaning of Cluster and different layers&#46;&#46;&#46;<\/p>\n","protected":false},"author":7,"featured_media":18282,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[2327,2329,2599,2600,2603,2608,2645,2646,8026,9100,11649,15657,15663,15665],"class_list":["post-18267","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cassandra","tag-cassandra-cluster","tag-cassandra-cluster-tutorial","tag-cluster-builder","tag-cluster-in-cassandra","tag-cluster-meaning","tag-clustering-in-cassandra","tag-column","tag-column-families","tag-keyspace","tag-node-cluster","tag-rows","tag-what-is-cassandra-cluster","tag-what-is-cluster","tag-what-is-cluster-in-cassandra"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Cassandra Cluster &amp; Cluster Builder - DataFlair<\/title>\n<meta name=\"description\" content=\"Cassandra Cluster tutorial: what is Cluster in Cassandra, different layers in Cassandra cluster: Node, Keyspace, column families,column, row,cluster builder\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/cassandra-cluster\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Cassandra Cluster &amp; 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