Christoph C. Cemper comments

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                                            Christoph C. Cemper

Template / Skeleton File or Default YAML Block

We need the same kind of templating function for YAML

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

Wow, thanks so much for the quick response. Maybe unrelated, but caught my eye: the xcaddy switched implicitly from our company standard golang 1.21.8 to 1.22.0, 1.22.8 or 1.22.9 depending...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

Sorry, we *also* cannot reproduce it as mentioned, and visible from the frequency, and @mholt mentioned there's possibly a low hanging fruit sanitizing. If you want to review the full...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

In addition to that, it's beyond my imagination how we would want to be able to reproduce some random web traffic pattern of X production web sites for an obvious...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

hmmm... maybe late, but that code snippet is just a read. Where is the write that conflicts? And how is correct concurrency ensured? Are there mutex'es? Is the context's variable...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

Since we disagree on this, I guess we'll just keep counting how many times Caddy takes down a dozen production websites and services and backend-APIs down in the next days...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

In addition to that, I want to re-confirm, again, >Unfortunately, we could not reproduce the issue yet in any way, nor do we know how to isolate this down to...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

> Configs are not private information. half of the config refers to internal hosts, ips, names, etc. that are nobody's business, for example, and any such knowledge can help a...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

Good morning @francislavoie Thanks for you fast responses, much appreciated (it was past midnight here in Austria). I want to apologize if you felt my response insulting or somehow related...

fatal error: concurrent map read and map write after upgrading 2.7.6 to 2.8.4 and/or adding github.com/caddyserver/cache-handler

> You're describing a race in map access. The odd thing is, the subject `map` is scoped per HTTP request: > > I, for one, cannot imagine 2 HTTP requests...