https://www.chenk.top/en/tags/cassandra/Recent content in Cassandra on Chen Kai BlogHugoenWed, 24 Apr 2024 09:00:00 +0000https://www.chenk.top/en/databases/05-nosql-landscape/Wed, 24 Apr 2024 09:00:00 +0000https://www.chenk.top/en/databases/05-nosql-landscape/<p>Not everything fits neatly into rows and columns. A social network&rsquo;s friend graph, a product catalog with wildly varying attributes, a real-time leaderboard, a recommendation engine&rsquo;s relationship web — these workloads push relational databases into awkward territory. NoSQL databases exist because different data models solve different problems better. The trick is knowing which one to reach for.</p> <hr> <h2 id="why-nosql" class="heading-anchor">Why NoSQL?<a href="#why-nosql" class="heading-link" aria-label="Permalink to this section" title="Copy link to this section">#</a> </h2><p>The term &ldquo;NoSQL&rdquo; is misleading. It does not mean &ldquo;no SQL&rdquo; — some NoSQL databases support SQL-like query languages. It means &ldquo;not only SQL&rdquo; or, more accurately, &ldquo;non-relational.&rdquo; The motivations for NoSQL fall into three categories:</p>