Why Your Goroutines Need a Speed Limit: Bounded Concurrency in Go

Fri, 10 Apr 2026 10:00:00 +0530

TL;DR: Spawning go func() without a limiter is a recipe for system collapse. This guide details how to use Semaphores and Worker Pools to prioritize predictable stability over absolute speed, protecting downstream dependencies from the thundering herd.

It’s a rite of passage for every Go developer. You receive a list of 10,000 URLs to fetch or 50,000 rows to process. You wrap the workload in an unbounded go func() loop, achieving maximum throughput in milliseconds.

Python Background Workers: Architecture, Queues, and Retry Strategies

Sun, 01 Feb 2026 13:00:00 +0530

I thought processing audio in the background was simple: spawn a thread, run the script, save the file. Then I hit 200 concurrent requests, and it failed epically.

The CPU spiked to full usage because of pydub’s processing. The TTS API didn’t rate-limit me but, it was horribly slow. Then the jobs started failing. Half the jobs died silently. The other half wrote corrupted files because of race conditions I didn’t know existed. And when I deployed a little fix? The deployment killed in-flight jobs, leaving orphaned audio segments scattered across cloud storage directory.

Reliability on Lorbic

Why Your Goroutines Need a Speed Limit: Bounded Concurrency in Go

Python Background Workers: Architecture, Queues, and Retry Strategies