[djeikyb]

My team just chose golang instead of java or dotnet core for a new crud app. I'm not especially fond of go, but mean length of feedback loops are worth it (so far). We have a bunch of tests, and they all run in a few hundredths of a second. Same coverage in java is usually several seconds at least. Often up to 30s if running tests with maven.

Standing up the app is also instantaneous. Spring boot apps with hibernate often take at least ten seconds. In prod this doesn't matter. But a cheap app start means integration tests are cheap. An fs hook runs both unit and integration tests every time the code changes.

ps. all the things people hate about go are true

[riku_iki]

There are lighter options in java world, my dropwizard server with JDBI starts in 1.2sec.

[parenthephobia]

I'm genuinely unsure if this is a joke. If you're running that on a modern computer, your server is spending billions of clock cycles starting up. What on Earth is it doing? :)

If I write a Go server, I'm unhappy if it takes more than 0.2 seconds to start.

[riku_iki]

Depends what your server is doing, java app binded to http port will take probably same amount of time.

My dropwizard server contains almost all possible batteries: ssl, logging, http filters, static content, metrics, DB connection pooling, static content serving, all kinds of URL parameter parsing and URL routing, DI framework, ORM, thread pooling. I think it just inspects and initializes all this data structures in memory, load libraries and classes, etc.