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| <title>Apache Ignite and NoSQL</title> |
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| <main id="main" role="main" class="container"> |
| <section id="sql-queries" class="page-section"> |
| <h1 class="first">Ignite for NoSQL Users</h1> |
| <div style="padding:0 0 20px 0;"> |
| <p> |
| Apache Ignite as many other NoSQL databases is horizontally scalable, highly available and |
| fault-tolerant. Ignite acts as a distributed partitioned hash map making sure that every cluster |
| node owns a portion of the overall data set. This way the more cluster nodes you add, the more data |
| you can store in the cluster. |
| </p> |
| <p> |
| Ignite can either partition or replicate the data. Unlike <code>REPLICATED</code> mode, where data is |
| fully replicated across all nodes in the cluster, in <code>PARTITIONED</code> mode Ignite will |
| equally split the data across multiple cluster nodes, allowing for storing TBs of data both in |
| <i>memory</i> and on <i>disk</i>. |
| </p> |
| </div> |
| |
| <section id="comparison-matrix-section" class="page-section" style="border: none"> |
| <table class="comparison-matrix" name="comparison-matrix"> |
| <thead> |
| <tr><th>Feature</th><th>NoSQL</th><th>Ignite</th></tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>Scalability</td> |
| <td><span class="check-mark">✓</span> horizontal</td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span> horizontal</b></td> |
| </tr> |
| <tr> |
| <td>Availability</td> |
| <td><span class="check-mark">✓</span> high</td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span> high</b></td> |
| </tr> |
| <tr> |
| <td>Consistency</td> |
| <td><span class="cross-mark">✗</span> eventual</td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span> strong</b></td> |
| </tr> |
| <tr> |
| <td>In-Memory</td> |
| <td><span class="cross-mark">✗</span></td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span> in-memory store</b></td> |
| </tr> |
| <tr> |
| <td>Persistence</td> |
| <td><span class="check-mark">✓</span></td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span></b></td> |
| </tr> |
| <tr> |
| <td>SQL</td> |
| <td><span class="cross-mark">✗</span></td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span></b></td> |
| </tr> |
| <tr> |
| <td>Key-Value</td> |
| <td><span class="check-mark">✓</span></td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span></b></td> |
| </tr> |
| <tr> |
| <td>Collocated Processing</td> |
| <td><span class="cross-mark">✗</span></td> |
| <td class="highlight-ignite-comparison"><span class="check-mark">✓</span></b></td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <table class="comparison-matrix-mobile" name="comparison-matrix-sm"> |
| <thead> |
| <tr><th>Scalability</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="check-mark">✓</span> horizontal</span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span> <b>horizontal</b></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>Availability</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="check-mark">✓</span> high</span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span> <b>high</b></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>Consistency</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="cross-mark">✗</span> eventual</span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span> <b>strong</b></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>In-Memory</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="cross-mark">✗</span></span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span> <b>in-memory store</b></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>Persistence</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>SQL</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="cross-mark">✗</span></span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>Key-Value</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| </tbody> |
| <thead> |
| <tr><th>Collocated-Processing</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><span class="left">NoSQL</span><span class="right"><span class="cross-mark">✗</span></span></td></tr> |
| <tr class="ignite"><td><span class="left"><b>Ignite</b></span><span class="right"><span class="check-mark">✓</span></span></td></tr> |
| </tbody> |
| </table> |
| </section> |
| |
| <p> |
| Unlike eventually consistent NoSQL databases, Ignite can operate in a <i>strongly consistent</i> mode, |
| guaranteeing the data consistency across all cluster nodes. In addition, ignte supports |
| <a href="https://apacheignite.readme.io/docs/transactions">ACID transactions</a> that can span |
| multiple keys acrsoss multiple cluster ndoes and partitions. |
| </p> |
| |
| <p> |
| The other difference between Ignite and NoSQL databases is that, first, the memory is |
| treated as a fully functional storage, not just as a caching layer, like most databases do. Second, |
| in addition to |
| <a href="/features/datagrid.html">key-value</a> APIs, Ignite supports |
| <a href="/features/sql.html">distributed SQL</a> and |
| <a href="/collocatedprocessing.html">collocated processing</a> approach. |
| </p> |
| </section> |
| </main> |
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