Personal Journal

“Building SaaS products with intent, sharing lessons from the journey, and writing about productivity and practical technology.”

Apr 01, 2026Backend

How to benchmark on PostgreSQL with pgbench

Testing the database under various workloads is essential for identifying bottlenecks and ensuring reliability. In this article, we will learn about how to use pgbench to simulate concurrent workloads, measure performance metrics, and evaluate how PostgreSQL behaves under load

1 min read
Mar 19, 2026Backend

Kafka Series [01]: Core Components And How They Work

A deep dive into Kafka's components - brokers, topics, partitions, producers, and consumers - how they actually work together under the hood.

1 min read
Mar 05, 2026Backend

Happens-Before in Java: What Every Java Developer Should Know

Understanding happens-before is critical for writing correct concurrent code in Java. This article breaks down the core rules at a high level.

1 min read