I have a project in the early design phase that I was thinking of going with .Net Core on Linux. I've thought about going with Java, but with all the recent Java licensing changes don't think I want to go that route anymore.
Now, we use Linux alpine docker containers, use postgre instead Sql Server and pwsh with Invoke-Build to run CI/CD stuff. Sworm for orchestrations and compose for local. Have 2 incoming country-level services this year for production. Currently on dev/stage it works really fast but load is trivial.
We did a lot of performance test on Windows and achieved 1.5-2K req/s with hello world and our setup on IIS/kestrel. Did no test for linux variant so far.
> I've thought about going with Java,
Java compared to latest C# is like ... Clojure to VBA. No brainner really, plus Oracle (sure, there are alternatives).
Also, entire Java enterprise stack is overengineered beyond repair. I need 77 classes for basic stuff. Take .NET core you wont regret it.
I've found that .Net Core on Linux and in Windows are close enough that scaling should be the bigger concern. Unless you're tethered to windows, the broader tooling is much more mature with Linux containers/pods.
On the Java side though there is a hack in JRE which checks if JVM runs inside a Docker container in order to not get out of memory limit by cgroup.
Of course for now you always have the option of enabling desktop GC instead
With so much experience you must know how this sounds to someone not in the .net space.
You and your company are clearly well versed in .net and it's worked out for you -- take a person and a company equally experienced in Java and they'd achieve similar results (I have, companies I've worked at have). The systems you're describing are not extraordinarily large scale systems. You've failed to outline the gains here vs. another tech stack.
For example, this is the one about Chocolatey that I gave at Microsoft event few years back (other are similar, but all on Serbian ATM since I mostly do consulting locally and involve everything from Gitlab over InfluxDb over PowerShell to obscure languages such as Autohotkey):
That being said, both .NET and the JVM are great platforms. You'll have to evaluate both platforms and see which one benefits your project more.