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# RethinkDB

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RethinkDB is a document-oriented database similar to MongoDB but aims to overcome scalability and practical limitation of the latter. [1] [2] RethinkDB is built to store JSON documents, and scale to multiple machines with very little effort. It has a pleasant query language that supports queries such as table joins and group by. It is easy to setup and learn. For more detailed information, see the official homepage.

## Installation

Install rethinkdbAUR from the official repositories.

Create and set user rights for RethinkDB folder:

    # mkdir /var/lib/rethinkdb/default
    # chown -R rethinkdb:rethinkdb /var/lib/rethinkdb/

Now you can start `rethinkdb` from the command-line:

    # rethinkdb

Alternatively, start and enable `rethinkdb@default`.

RethinkDB's admin UI is now available on port 8080.

## Configuration

RethinkDB has multi-instance support, which means you can run several independent database instances on the same machine. The systemd service also supports multi-instance configuration.

To create a new RethinkDB instance, create its configuration file:

    # cd /etc/rethinkdb
    # cp instances.d/default.conf instances.d/Name.conf

where Name represents the configuration you will be using later. Change the configuration options in the new file. Then start/enable `rethinkdb@Name.service`.

The 'default' instance is created at installation time for your convenience. Its data is stored in `/var/lib/rethinkdb/default`.

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- Database management systems

RethinkDB
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