 Akumuli is a time-series database for modern hardware. It can be used to capture, store and process time-series data in real-time. The word "akumuli" can be translated from Esperanto as "accumulate".
<ul>
<li>True column-oriented format (not PAX).</li>
<li>Based on novel <a href="http://akumuli.org/akumuli/2017/04/29/nbplustree/" rel="nofollow">LSM and B+tree hybrid datastructure</a> with multiversion concurrency control (no concurrency bugs, parallel writes, optimized for SSD and NVMe).</li>
<li>Crash safety and recovery.</li>
<li>Fast aggregation without pre-configured rollups or materialized views.</li>
<li>Queries can be executed without decompressing the data.</li>
<li>Fast compression algorithm (dictionary + entropy) with small memory overhead (about 2.5 bytes per element on appropriate data).</li>
<li>Compressed in-memory storage for recent data.</li>
<li>Can be used as a server application or an embedded library.</li>
<li>Simple query language based on JSON and HTTP.</li>
<li>Fast range scans and joins, read speed doesn't depend on database cardinality.</li>
<li>Fast data ingestion over the network:
<ul>
<li>4.5M data points per second on 8-core Intel Xeon E5-2670 v2 (m3.2xlarge EC2 instance).</li>
<li>16.1M data points per second on 32-core Intel Xeon E5-2680 v2 (c3.8xlarge EC2 instance).</li>
</ul>
</li>
<li>Query results are streamed to client using the chunked transfer encoding of the HTTP protocol.</li>
<li>Decompression algorithm and input parsers were fuzz-tested.</li>
<li>Grafana <a href="https://github.com/akumuli/akumuli-datasource">datasource</a> plugin.</li>
<li>Fast and compact inverted index for series lookup.</li>
</ul>

Akumuli is a time-series database for modern hardware. It can be used to capture, store and process time-series data in real-time. The word "akumuli" can be translated from Esperanto as "accumulate".

Akumuli - Time-series database

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