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Key-Value Store<br />
<span class="with-apache"> With Apache Ignite</span>
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<div class="innerhero__descr pt-2 h5">Distributed store for high-performance data access</div>
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<h2 class="h5 hub1__title">What is a key-value store?</h2>
<p class="hub1__text">A key-value store is a data storage software. It stores, retrieves, and manages data as a set of unique keys. Each one is associated with one and only one value.</p>
<h2 class="h5 hub1__title hub1__titleend">How a key-value store works</h2>
<p class="hub1__text">A key-value store, or a key-value database, holds a collection of data records in various fields. The data records have unique keys to retrieve and modify records quickly.</p>
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<h2 class="compute2__h2">Benefits Of Key-Value Store</h2>
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<p class="compute2__text base2__text">Thanks to their design, key-value stores can perform many more operations in a given amount of time than other database models</p>
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<h3 class="fz20 compute2item__title">Horizontal scalability</h3>
<p class="compute2__text base2__text">Key-value stores can keep and process large volumes of data by scaling horizontally</p>
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<h2 class="grid4__h2 h5 key4__h2">With Apache Ignite, a key-value store can cache data in memory and persist it on disk</h2>
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<p class="grid4__text">The <a href="/arch/native-persistence.html">native persistence</a> feature eliminates the time-consuming cache warm-up step as well as the data reloading phase from external databases.</p>
<p class="grid4__text pt-1">Since the native persistence always keeps a full copy of data on disk, you are free to cache a subset of records in memory.</p>
<p class="grid4__text pt-1">If a required data record is missing in memory, then Ignite reads it from disk automatically, regardless of the API you use.</p>
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<h2 class="grid5__h2 key5__h2 h4">Key-value store is used when <strong>speed and scale are top priorities</strong></h2>
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<h3 class="key5__h3">User sessions caching</h3>
<p class="grid5__text key5__text">Key-value stores are used to accumulate user session details in web applications to personalize content.</p>
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<h3 class="key5__h3">360 Customer View</h3>
<p class="grid5__text key5__text">Applications can collect user preferences and behavioral patterns to offer better services. The records can be stored in a key-value database to enable fast customer data lookups.</p>
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<h3 class="key5__h3">Back-end systems acceleration</h3>
<p class="grid5__text key5__text">Developers use key-value stores to cache specific records that don’t require a regular update. This reduces load on core back-end systems and databases.</p>
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