Golang 1.9 and concurrent map

[matcornic]

Hello,

Thanks for this package that has been useful for years.
Golang 1.9 now provides a concurrent map in standard library. Consider mentioning it on the README for those using latest version of Golang.

Though, the package is still very useful for older versions :)

[orcaman]

@matcornic thanks for the feedback, we're glad that you found this useful!

As for the 1.9 sync.Map - it has a few key differences from this map. The stdlib sync.Map is designed for append-only scenarios. So if you want to use the map for something more like in-memory db, you might benefit from using our version. You can read more about it in the golang repo, for example here: golang/go#21035 (comment) and here: https://stackoverflow.com/questions/11063473/map-with-concurrent-access

[matcornic]

@orcaman thanks for your quick answer ! Your explanation makes sense. So, in my opinion, differences between your package and standard library are worth explaining in the README.
We should be clear on which situation your library is more suited than the standard library, and in which cases it's not 👍

[orcaman]

Good point. I will update the README.md

[orcaman]

Merged as per our discussion. Thanks!