Django + ElasticSearch without invalidation logic

3:45pm - 4:10pm on Friday, October 4 in Madison

Flávio Juvenal

Slides:
https://docs.google.com/presentation/d/1ZA6j4qgm1xKJ60MgHhk4ghejctOrE0Z59NIWHgQ5LoE/edit?usp=sharing

Description

This talk will teach you to finally integrate Django and Elasticsearch “like it’s 2019”.

Elasticsearch is a great addition to the Django developer’s toolkit: it supports performant complex full-text queries and filters on huge datasets, where traditional relational database-only solutions fall short. But integrating Django with Elasticsearch usually is a pain: you need logic to keep database tables and Elasticsearch indexes in sync. Since data is stored in two places, it can become out-of-sync if care is not taken. Dirty index data will generate wrong search results, defeating the purpose of the integration.

A new alternative is django- zombodb, a Django app that uses a Postgres extension for syncing tables with Elasticsearch indexes at transaction time. With django-zombodb, developers can treat an ElasticSearch index just like an internal Postgres index. This means no code is needed to synchronize Postgres with Elasticsearch, you just need to run a Django migration that executes a CREATE INDEX in the database and you’re done. Any new inserts, updates or deletes on that model will reflect on an Elasticsearch index at transaction time!

django-zombodb also offers a Pythonic/Djangonic API to make Elasticsearch queries over Django models using the ORM in a queryset-friendly way. Developers are able to compose Elasticsearch queries with regular ORM queries by just chaining queryset methods and composing Q-like objects. In this talk, you’ll learn django-zombodb advantages over other solutions, how it works, how to use it, and even you can contribute to it.

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