Going back to Go: Concurrency Patterns

Building blocks for concurrency in go (goroutine, channel) and patterns (fan out).

TODO

• concurrency is not parallelism by rob pike https://go.dev/blog/waza-talk

Basic

• start (and stop) go routine
• channel, buffer, not buffered, select

Patterns (I can think of top of my head)

• pipeline
  • fan out (one web page has multiple links)
  • fan in, wait until multiple part download has finished
• limit parallelism, e.g. at most two concurrent outgoing requests

Libraries

• error group
• single flight

Top google search results

• https://go.dev/blog/pipelines Go Concurrency Patterns: Pipelines and cancellation
• https://github.com/lotusirous/go-concurrency-patterns
• https://www.oreilly.com/library/view/concurrency-in-go/9781491941294/ch04.html book from oreilly
• https://reliasoftware.com/blog/golang-concurrency-patterns generator pattern?