Django Oscar 4 requires us to configure a search engine. For this, we use Haystack.
Search engines allow us to index and search products efficiently, enabling things like ordering alphabetically, by price, or by date added etc.

Solr

Solr implementation differs between development and production.
In this tutorial, we'll show how to run Solr locally and discuss the production setup only theoretically.

Besides your web server, Solr requires a dedicated server.
 

Documentation:
https://www.java.com/en/download/manual.jsp
https://django-oscar.readthedocs.io/en/latest/howto/how_to_setup_solr.html
 

pip install pysolr==3.10.0

• Download Solr by accessing the following url:
  https://archive.apache.org/dist/lucene/solr/6.6.6/solr-6.6.6.tgz

• Extrack the content
   
• In the Command Line go to: /solr-6.6.6/solr-6.6.6/bin

  cd solr-6.6.6
  cd solr-6.6.6
  cd bin

   

• Run:

  solr start
  solr create -c sandbox -n basic_config

• HAYSTACK_CONNECTIONS = {
      'default': {
          'ENGINE': 'haystack.backends.solr_backend.SolrEngine',
          'URL': 'http://127.0.0.1:8983/solr/sandbox',
          'ADMIN_URL': 'http://127.0.0.1:8983/solr/admin/cores',
          'INCLUDE_SPELLING': True,
      },
  }

  Replace the HAYSTACK_CONNECTIONS 
   

• In your project directory run:

  python manage.py build_solr_schema --configure C:/Users/jaimedcsilva/Desktop/solr-6.6.6/solr-6.6.6/server/solr/sandbox/conf
  python manage.py build_solr_schema --reload-core sandbox
  python manage.py rebuild_index --noinput

   

Access the Solr admin page at: http://localhost:8983/

Things to keep in mind when moving to production

• Solr requires a dedicated server
• Solr requires Java
• The Solr server should be restricted to communicate only to the Django server
• Only the admin should have access to http://localhost:8983/
• Consider server backups.

If you need to stop the Solr server:

solr stop -all