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3.7 KiB
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===============
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NoSQL databases
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===============
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.. sidebar:: further read
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- `NoSQL databases <https://en.wikipedia.org/wiki/NoSQL>`_
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- `redis.io <https://redis.io/>`_
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- `MongoDB <https://www.mongodb.com>`_
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The following `NoSQL databases`_ are supported:
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- :ref:`engine redis_server`
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- :ref:`engine mongodb`
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All of the engines above are just commented out in the :origin:`settings.yml
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<searx/settings.yml>`, as you have to set various options and install
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dependencies before using them.
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By default, the engines use the ``key-value`` template for displaying results /
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see :origin:`simple <searx/templates/simple/result_templates/key-value.html>`
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theme. If you are not satisfied with the original result layout, you can use
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your own template, set ``result_template`` attribute to ``{template_name}`` and
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place the templates at::
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searx/templates/{theme_name}/result_templates/{template_name}
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Furthermore, if you do not wish to expose these engines on a public instance, you
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can still add them and limit the access by setting ``tokens`` as described in
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section :ref:`private engines`.
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Configure the engines
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=====================
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`NoSQL databases`_ are used for storing arbitrary data without first defining
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their structure.
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Extra Dependencies
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------------------
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For using :ref:`engine redis_server` or :ref:`engine mongodb` you need to
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install additional packages in Python's Virtual Environment of your SearXNG
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instance. To switch into the environment (:ref:`searxng-src`) you can use
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:ref:`searxng.sh`::
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$ sudo utils/searxng.sh instance cmd bash
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(searxng-pyenv)$ pip install ...
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.. _engine redis_server:
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Redis Server
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------------
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.. _redis: https://github.com/andymccurdy/redis-py#installation
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.. sidebar:: info
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- ``pip install`` redis_
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- redis.io_
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- :origin:`redis_server.py <searx/engines/redis_server.py>`
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Redis is an open source (BSD licensed), in-memory data structure (key value
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based) store. Before configuring the ``redis_server`` engine, you must install
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the dependency redis_.
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Select a database to search in and set its index in the option ``db``. You can
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either look for exact matches or use partial keywords to find what you are
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looking for by configuring ``exact_match_only``. You find an example
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configuration below:
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.. code:: yaml
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# Required dependency: redis
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- name: myredis
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shortcut : rds
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engine: redis_server
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exact_match_only: false
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host: '127.0.0.1'
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port: 6379
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enable_http: true
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password: ''
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db: 0
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.. _engine mongodb:
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MongoDB
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-------
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.. _pymongo: https://github.com/mongodb/mongo-python-driver#installation
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.. sidebar:: info
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- ``pip install`` pymongo_
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- MongoDB_
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- :origin:`mongodb.py <searx/engines/mongodb.py>`
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MongoDB_ is a document based database program that handles JSON like data.
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Before configuring the ``mongodb`` engine, you must install the dependency
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redis_.
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In order to query MongoDB_, you have to select a ``database`` and a
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``collection``. Furthermore, you have to select a ``key`` that is going to be
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searched. MongoDB_ also supports the option ``exact_match_only``, so configure
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it as you wish. Below is an example configuration for using a MongoDB
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collection:
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.. code:: yaml
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# MongoDB engine
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# Required dependency: pymongo
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- name: mymongo
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engine: mongodb
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shortcut: md
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exact_match_only: false
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host: '127.0.0.1'
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port: 27017
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enable_http: true
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results_per_page: 20
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database: 'business'
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collection: 'reviews' # name of the db collection
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key: 'name' # key in the collection to search for
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Acknowledgment
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==============
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This development was sponsored by `Search and Discovery Fund
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<https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
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