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| content="The Apache Ignite® in-memory data grid accelerates and scales out databases, services, and APIs and supports key-value, ANSI SQL, and machine learning APIs"/> |
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| <title>In-Memory Data Grid - Apache Ignite</title> |
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| <article> |
| <header> |
| <div class="container"> |
| <h1><strong>In-Memory Data Grid</strong> with Apache Ignite</h1> |
| </div> |
| </header> |
| <div class="container"> |
| |
| <p> |
| Apache Ignite can be used as an in-memory data grid that accelerates and scales your existing databases and |
| data stores. The grid supports key-value and ANSI SQL APIs, ACID transactions, co-located processing, |
| and machine learning libraries. As an in-memory data grid, Ignite is frequently used to increase the |
| performance and scalability of real-time applications, to support <a href="/use-cases/high-performance-computing.html"> |
| high-performance computing</a>, and to cache data that is scattered across databases. |
| </p> |
| <img class="img-fluid diagram-right" src="/images/svg-diagrams/data_grid.svg" alt="In-Memory Data Grid with Apache Ignite" width="555" height="600" /> |
| |
| <h2>What is an In-Memory Data Grid?</h2> |
| |
| <p> |
| An in-memory data grid is an advanced read-through/write-through cache that is deployed on top of multiple databases. |
| The grid supports various APIs, such as SQL, compute, and key-value. Applications write to and read from the |
| grid, and the grid propagates changes to the underlying data stores in a consistent way. |
| </p> |
| <p> |
| With Ignite, your applications can utilize multiple APIs for data processing. Key-value and SQL queries |
| enable you to request, join, and group distributed datasets. Compute and machine-learning APIs execute |
| logic close to the data, thus eliminating expensive data shuffling over the network. |
| </p> |
| |
| <h2>IGNITE AS AN IN-MEMORY DATA GRID AND EXTERNAL DATABASES</h2> |
| |
| <p> |
| Ignite can improve the performance and scalability of most external databases and data stores (such as RDBMS, |
| NoSQL, and Hadoop) by sliding in as an in-memory data grid between the application and the database layers. |
| When the application writes data to the cache, Ignite writes-through or writes-behind all data modifications |
| to the underlying external store. Ignite also performs ACID transactions (coordinating and committing transactions |
| across both the cluster and the database). |
| </p> |
| |
| <p> |
| Additionally, Ignite can be deployed as a shared and unified in-memory layer that stores datasets that originate |
| from disjointed databases. Your applications can consume all the data from Ignite as a single store while Ignite |
| synchronizes the original databases whenever in-memory data is updated. |
| </p> |
| |
| <h2>IGNITE NATIVE PERSISTENCE</h2> |
| |
| <p> |
| Ignite Native Persistence is a distributed ACID-compliant, SQL-compliant disk store that transparently |
| integrates with the Ignite in-memory layer. When Native Persistence is enabled, Ignite stores both |
| data and indexes on disk, thus eliminating the time-consuming cache warm-up step. Native Persistence |
| keeps a full copy of data on disk, so you are free to cache a subset of records in memory. If a required |
| data record is missing from memory, Ignite reads the record from the disk automatically, regardless of the |
| API (whether SQL, key-value, or scan queries). |
| </p> |
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| <div class="display-6 title">Learn More</div> |
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| <li> |
| <a href="/features/sql.html"> |
| Distributed SQL <i class="fas fa-angle-double-right"></i> |
| </a> |
| </li> |
| <li> |
| <a href="/features/collocated-processing.html"> |
| Co-located Processing <i class="fas fa-angle-double-right"></i> |
| </a> |
| </li> |
| <li><a href="/features/acid-transactions.html"> |
| ACID Transactions <i class="fas fa-angle-double-right"></i> |
| </a></li> |
| <li><a href="/features/machinelearning.html"> |
| Machine and Deep Learning <i class="fas fa-angle-double-right"></i> |
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| <ul> |
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| <a href="/arch/native-persistence.html"> |
| Native Persistence <i class="fas fa-angle-double-right"></i> |
| </a> |
| </li> |
| <li><a href="/use-cases/in-memory-database.html"> |
| Ignite as an In-Memory Database <i class="fas fa-angle-double-right"></i> |
| </a></li> |
| <li><a href="/use-cases/digital-integration-hub.html"> |
| Ignite as a Digital Integration Hub <i class="fas fa-angle-double-right"></i> |
| </a></li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
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