Benchmarking MongoDB vs PostgreSQL with Go: A Practical Performance Comparison

Thu, 25 Sep 2025 09:00:00 -0500

When selecting a database for a production application, theoretical comparisons only get you so far. What matters is how the database performs with your specific workloads and access patterns. In this article, we’ll explore how to build a comprehensive benchmarking suite in Go to compare MongoDB and PostgreSQL across common real-world operations, providing actionable insights for your next project.

Introduction
Setting Up the Environment
Creating Realistic Test Datasets
Benchmarking Methodology
Single-Record Operations
Range Queries and Filtering
Aggregation Performance
Pagination and Sorting
Write Operations
Concurrency Testing
Results Analysis
Database Memory and CPU Usage
Real-World Scenarios and Recommendations
Conclusion

Introduction

MongoDB and PostgreSQL represent two fundamentally different approaches to data storage and retrieval:

Database Performance on Support Tools

Benchmarking MongoDB vs PostgreSQL with Go: A Practical Performance Comparison

Table of Contents

Introduction