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Channels perform poorly and lack performance optimizations

6/10 Medium

Despite being a hallmark of Go, channels are slow and throw away language niceties like defers and interface indirection when optimizing for performance. Developers must abandon many of Go's features to achieve high performance.

Go
Category
performance
Workaround
partial
Stage
build
Freshness
persistent
Scope
language
Upstream
open
Recurring
Yes

Sources

Collection History

Query: “What are the most common pain points with Go for developers in 2025?”3/29/2026

In actuality, to write high-performance Go, you end up throwing away many of the language's niceties. Defers add overhead, interface indirection is expensive... and channels are, generally speaking, on the slowish side.

Created: 3/29/2026Updated: 3/29/2026