---
title: Performance is key. Consistency is a must.
---
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                <h2 class="tagline"><em>Performance</em> is key. <em>Consistency</em> is a must.</h2>
                <p class="description">Providing low latency, high concurrency data management solutions since 2002.<br/>
                  <br/>Build high-speed, data-intensive applications that elastically meet performance requirements at any scale.<br/>
                  Take advantage of Apache Geode's unique technology that blends advanced techniques for data replication, partitioning and distributed processing.

                  <br/><br/>
                  Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing.<br/>
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                <h3>Replication and Partitioning</h3>
                <p>Data can easily be partitioned (sharded) or replicated between nodes allowing performance to scale as needed. Durability is ensured through redundant in-memory copies and disk-based persistence.</p>
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                <h3>Persistence</h3>
                <p>Super fast write-ahead-logging (WAL) persistence with a shared-nothing architecture that is optimized for fast parallel recovery of nodes or an entire cluster.</p>
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                <h3>Performance</h3>
                <p>Linear-scaling low latency for transactions, reads, writes and query processing of indexed or unindexed data.</p>
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                <h3>In-Memory Storage</h3>
                <p>Blazing fast in-memory storage optimized for large heaps, with the option of using off-heap storage, compression and features such as disk-overflow, eviction and expiration of data.</p>
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                <h3>Functions</h3>
                <p>Distributed location-aware user functions can be deployed and executed by the same nodes storing relevant sharded data for fast parallel processing. Failed operations can be retried on replicant nodes.</p>
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                <h3>Transactions</h3>
                <p>ACID distributed transactions support efficient and safe coordinated operations on colocated data. Transactions can be initiated or suspended by either a client or a server.</p>
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              <h3>OQL and Indexes</h3>
              <p>Object Query Language allows distributed query execution on hot and cold data, with SQL-like capabilities, including joins.<br/>
              Multiple kinds of indexes can be defined and consistently maintained across the cluster.</p>
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              <h3>Events</h3>
              <p>Clients can be notified about server-side data events, and servers can react synchronously or asynchronously with guaranteed delivery of ordered events.</p>
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              <h3>Clustering</h3>
              <p>Highly scalable, robust advanced clustering technology with failure detection, dynamic scaling, and network-partition detection algorithms.</p>
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              <h3>Multi-Cluster</h3>
              <p>Geode clusters can be replicated over WAN in various topologies: active-active, active-passive, ring, hub-spoke, star, etc.</p>
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              <h3>Continuous Query</h3>
              <p>Clients can stay up to date by registering OQL queries with the Geode servers, making event-driven applications possible.</p>
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              <h3>Clients</h3>
              <p>Clients are available for Java, C++, and C# .NET Framework. A REST API is available for all other languages.</p>
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              <h3>Adapters</h3>
              <p>Geode can be used as a drop-in replacement for memcached, allowing use of Geode's server-side features like multi-cluster replication.</p>
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                And much more... Interested? You can check our <a href="https://cwiki.apache.org/confluence/display/GEODE/Index#Index-Geodein5minutesGeodein5minutes" target="_blank" class="btn btn-inverse btn-lg">Geode in 5 minutes tutorial</a> <span class="avoidwrap">, ask a question on the <a href="/community/" class="btn btn-inverse btn-lg">Mailing lists</a> or <a href="http://stackoverflow.com/search?q=Apache%20Geode" class="btn btn-inverse btn-lg">StackOverflow</a></span>
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                <h2>About the Project</h2>
<p>Apache Geode is a data management platform that provides real-time, consistent access to data-intensive applications throughout widely distributed cloud architectures.</p>

<p>Geode pools memory, CPU, network resources, and optionally local disk across multiple processes
to manage application objects and behavior. It uses dynamic replication and data partitioning
techniques to implement high availability, improved performance, scalability, and fault
tolerance. In addition to being a distributed data container, Apache Geode is an in-memory data
management system that provides reliable asynchronous event notifications and guaranteed message
delivery.</p>

<p>Apache Geode is a mature, robust technology originally developed by GemStone Systems.
Commercially available as GemFire™, it was first deployed in the financial sector as the transactional, low-latency data engine used
in Wall Street trading platforms.
Today Apache Geode technology is used by hundreds of enterprise customers for high-scale business applications that must meet low latency and 24x7 availability requirements.</p>
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