go module proxies

private go module proxies

what are the options besides the default public proxy.golang.org if you want to run something private?

Athens is the most "feature complete" but goproxy/goproxy is much simpler with almost the same functionality, and it's easier to embed/customize.

project	hosted	direct	upstream proxy	exclude	sumdb	cache control	access control
gomods/athens	azure	yes	yes	yes	proxy	no	no
goproxy/goproxy	goproxy.cn	yes	yes	yes	proxy	no	no
goproxyio/goproxy	goproxy.io	yes	yes	?	proxy	no	no
thumbai/thumbai	thumbai.app	yes	yes	?	?	no	no

athens is probably the most "feature complete"
goproxy/goproxy is the simplest and can be customized / embedded as a handler the easiest
athens and goproxy/goproxy both have support for a wide range of storage backends
goproxyio looks overly complex yet not configurable
thumbai does not look maintained

not ready / commercial / part of another project