Django ORM vs. Serializers: Optimal Data Retrieval for Complex Queries

Ramesh Ponnusamy
5 min readSep 20, 2023

Performance: Django ORM Query > Django Serializers

Django, a popular web framework for Python, offers two powerful tools for retrieving data from a database: the Object-Relational Mapping (ORM) system and Serializers. Both approaches have their strengths and weaknesses, and choosing the right one can greatly impact the performance of your application. In this blog post, we’ll explore the differences between Django ORM and Serializers and provide guidance on when to use each approach.

Photo by Wayne Bishop on Unsplash

Analysis Report:

Performance with Django ORM:

Django ORM executed just one SQL query and completed the task in a mere “elapsed_time” of 0.032 seconds. This remarkable efficiency is particularly noticeable when handling complex queries or joining multiple models. The use of select_related and prefetch_related minimizes additional database queries, resulting in swift and efficient data retrieval.

Performance with Django Serializers:

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