Where WebAssembly is, and where WebAssembly on the server is going... let's hope it doesn't become another CORBA.

With some tuning SQLite can go a long way, even for server type workloads. There are still a few caveats but in some case this can reduce complexity and cost quite a bit.

Could indeed turn into a nice alternative to fail2ban.

This is a good list, should be seen as a starting point there are more things to do after this. I'm thinking for instance about adding fail2ban to the mix.

Nice post explaining the common algorithms used for load balancing. Each having their own trade offs of course. Well done with tiny simulations.

OK, that looks like cool challenges to train your troubleshooting skills.