Akumuli is a numeric time-series database. 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".

• Column-oriented time-series database.
• Log-structured append-only B+tree with multiversion concurrency control.
• Crash safety.
• Fast aggregation without pre-configured rollups or materialized views.
• Custom compression algorithm (dictionary + entropy) with small memory overhead (about 2.5 bytes per element on appropriate data).
• Compressed in-memory storage for recent data.
• Can be used as a server application or an embedded library.
• Simple query language based on JSON over HTTP.
• Fast data ingestion over the network:
  • 4.5M data points per second on 8-core Intel Xeon E5-2670 v2 (m3.2xlarge EC2 instance).
  • 16.1M data points per second on 32-core Intel Xeon E5-2680 v2 (c3.8xlarge EC2 instance).
• Query results returned using chunked transfer encoding at rate about 50MB/second (about 1M data points/second) per core.

• Wiki
• Getting started

• Run prerequisites.sh. It will try to do the best thing.

In case automatic script didn't work:

• Boost:

  sudo apt-get install libboost-all-dev

• log4cxx:

  sudo apt-get install log4cxx

• jemalloc:

  sudo apt-get install libjemalloc-dev

• microhttpd:

  sudo apt-get install libmicrohttpd-dev

• APR:

  sudo apt-get install libapr1-dev libaprutil1-dev libaprutil1-dbd-sqlite3

• SQLite:

  sudo apt-get install libsqlite3-dev

• Cmake:

  sudo apt-get install cmake

1. cmake .
2. make -j

• Run prerequisites.sh. It will try to do the best thing.

In case automatic script didn't work:

• Boost:

  sudo yum install boost boost-devel

• log4cxx:

  sudo yum install log4cxx log4cxx-devel

• jemalloc:

  sudo yum install jemalloc-devel

• microhttpd:

  sudo yum install libmicrohttpd-devel

• APR:

  sudo yum install apr-devel apr-util-devel apr-util-sqlite

• SQLite

  sudo yum install sqlite sqlite-devel

• Cmake:

  sudo yum install cmake

1. cmake .
2. make -j
3. make

• Same as for RHEL7, but we need to manually install log4cxx, as there isn't a package in the repos:

wget http://www.pirbot.com/mirrors/apache/logging/log4cxx/0.10.0/apache-log4cxx-0.10.0.tar.gz
tar -xzvf apache-log4cxx-0.10.0.tar.gz 
cd apache-log4cxx-0.10.0

• Add #include <cstring> to: src/main/cpp/inputstreamreader.cpp, src/main/cpp/socketoutputstream.cpp and src/examples/cpp/console.cpp
• Add #include <cstdio> to: src/examples/cpp/console.cpp

./configure --prefix=/usr --libdir=/usr/lib64
make -j4
sudo make install

• Go on as for RHEL7

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