Understanding Waitgroups in Go: Managing Goroutines and Changes in Go 1.25
By
mfbmina
A baker's-dozen of insight crammed into one ring.
Summary
This article explains waitgroups in Go programming, which are synchronization primitives from the sync package that help manage multiple goroutines. It discusses how waitgroups solve the problem of processing hundreds of records concurrently rather than sequentially, mentions their usage patterns, and notes that changes were introduced in Go 1.25. The content appears to be an educational tutorial on concurrent programming in Go.
Key quotes
· 4 pulledWaitgroups are part of the sync package, and provide a way to wait for a collection of goroutines to finish.
One way to solve this is to process each record sequentially and unify the output only at the end. However, this can be extremely slow.
Another way is to process them concurrently, speeding up the overall time.
I've decided to talk about waitgroups, a way to simplify the management of multiple goroutines.
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