Performance¶
Wagtail is designed for speed, both in the editor interface and on the front-end, but if you want even better performance or you need to handle very high volumes of traffic, here are some tips on eking out the most from your installation.
Editor interface¶
We have tried to minimise external dependencies for a working installation of Wagtail, in order to make it as simple as possible to get going. However, a number of default settings can be configured for better performance:
Cache¶
We recommend Redis as a fast, persistent cache. Install Redis through your package manager (on Debian or Ubuntu: sudo apt-get install redis-server
), add django-redis
to your requirements.txt
, and enable it as a cache backend:
CACHES = {
'default': {
'BACKEND': 'django_redis.cache.RedisCache',
'LOCATION': '127.0.0.1:6379',
'OPTIONS': {
'CLIENT_CLASS': 'django_redis.client.DefaultClient',
}
}
}
Search¶
Wagtail has strong support for Elasticsearch - both in the editor interface and for users of your site - but can fall back to a database search if Elasticsearch isn’t present. Elasticsearch is faster and more powerful than the Django ORM for text search, so we recommend installing it or using a hosted service like Searchly.
Once the Elasticsearch server is installed and running. Install the elasticsearch
Python module with:
pip install elasticsearch
then add the following to your settings:
WAGTAILSEARCH_BACKENDS = {
'default': {
'BACKEND': 'wagtail.wagtailsearch.backends.elasticsearch.ElasticSearch',
'INDEX': '{{ project_name }}',
},
}
Once Elasticsearch is configured, you can index any existing content you may have:
./manage.py update_index
Database¶
Wagtail is tested on SQLite, and should work on other Django-supported database backends, but we recommend PostgreSQL for production use.
Public users¶
Caching proxy¶
To support high volumes of traffic with excellent response times, we recommend a caching proxy. Both Varnish and Squid have been tested in production. Hosted proxies like Cloudflare should also work well.
Wagtail supports automatic cache invalidation for Varnish/Squid. See Frontend cache invalidator for more information.