Ajay Singh

Diagram comparing concurrency and parallelism with two separate task flow illustrations labeled "Process 1" and "Process 2"

Concurrency vs Parallelism: Understanding the Difference That Matters

In modern software development, terms like concurrency and parallelism frequently surface when discussing system performance, scalability, or responsiveness. While they may appear similar and are often used interchangeably they are fundamentally different concepts with distinct implications for how systems are designed and executed. Let’s explore what each of these terms truly means, why the difference […]

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Illustration comparing Redis Pub/Sub and Redis Streams messaging patterns. The left side shows a fast red sports car representing Pub/Sub for speed, while the right side shows a relay race team symbolizing Streams for reliability. Labels read "Pub/Sub" and "Streams", with "Speed vs Reliability" emphasized below.

Redis Streams vs Pub/Sub: A Performance Perspective

When building real-time systems, message delivery mechanisms play a crucial role in defining system behavior under load. Redis offers two core messaging patterns: Pub/Sub and Streams. While they can seem similar at first glance, their performance characteristics and design goals are quite different. Redis Pub/Sub: Speed Over Reliability Redis Pub/Sub is built for scenarios where

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