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title: Overview
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<h4>Apache Crail (Incubating) is a high-performance distributed data store designed for fast sharing of ephemeral data in distributed data processing workloads</h4>
<p><a class="btn btn-success" href="download/">Download Now</a></p>
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<h2>Fast</h2>
<p align="justify">Crail is designed from ground up for modern high-performance networking and storage hardware (RDMA, NVMe, NVMf, etc.). It leverages user-level I/O to access hardware directly from the application context, providing bare-metal I/O performance to analytics workloads. For example, Crail achieves data access at rates close to the 100Gb/s network limit with latencies below 10 us.</p>
<p><a class="btn btn-default" href="overview/index.html#overview">Learn more &raquo;</a></p>
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<h2>Heterogeneous</h2>
<p align="justify">Crail offers a unified storage namespace over a heterogeneous set of storage resources distributed in a cluster, such as DRAM, non-volatile memory (NVM), Flash or GPU memory. Depending on the storage policy, data sets may be stored on a particular storage technology or even a specific storage device, or be distributed across multiple devices and storage technologies. 
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<p><a class="btn btn-default" href="overview/index.html#fs">Learn more &raquo;</a></p>
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<h2>Modular</h2>
<p align="justify">Crail provides a modular architecture where new network and storage technologies can be integrated in the form of pluggable modules. Crail further exports various application interfaces including File System (FS), Key-Value (KV) and Streaming, and integrates seamlessly with the Apache ecosystem, such as Apache Spark, Apache Parquet, Apache Arrow, etc.</p>
<p><a class="btn btn-default" href="overview/index.html#spark">Learn more &raquo;</a></p>
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<h2>News</h2>
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