Solving the N+1 Problem in Django ??

Ever encountered the N+1 problem in Django? It's when fetching related data leads to excessive queries. For instance, if you retrieve a set of objects and then query for each object's related data, you may end up with many more queries than necessary.

Consider this hypothetical scenario:

Original Approach:

• Number of books: 100
• Number of queries: 101 (1 query to fetch all books, then 100 queries for each book's author)
• Total time: 500 ms

Optimized Approach using select_related:

• Number of books: 100
• Number of queries: 1 (1 query to fetch all books and their authors)
• Total time: 50 ms

Here's how to tackle it:

Original Approach:

Optimized Approach using select_related:

Efficiency in querying leads to better performance! ?

#Django #DatabaseOptimization #CodingTips