For the core application it’s all GenServers that run their initialization asynchronously by immediately returning a continue instruction from their init/1 callback (and all the other code that’s potentially calling out to them is set up to properly handle timeouts resulting from this). Based on logging messages, the application start for the core happens within a few hundred milliseconds.
For the bot application, it’s similar in terms of timing so I assume it’s behaving sanely, though I don’t have anywhere near the knowledge of what’s going there that I do for the core application because I haven’t read much of the source code for discord_alchemy.
