jerdew
How to start applications concurrently in 1.15-otp-26?
The announcement for 1.15 says:
Furthermore, Erlang/OTP 26 allows us to start applications concurrently and cache the code path lookups, decreasing the cost of booting applications. The combination of Elixir v1.15 and Erlang/OTP 26 should also reduce the boot time of applications, such as when starting
iex -S mixor running a single test withmix test.
In the elixir repo I see ‘concurrently’ in 2 places and they both default to not-concurrent, so I’m assuming my stuff does not start concurrently by default. … but the announcement looks like it runs stuff concurrently by default as the graph showing the speed up is titled simply time mix run -e 1
Do I need to configure concurrent app starting in 1.15-otp-26?
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adw632
jerdew
I see where I was confused, I was mixing start_concurrently up as a command line flag; I had tried setting default_task: "start_concurrently" in my Mix.Project and set an alias of start_concurrently to app.start --start_concurrently which didn’t do anything different.
For other sleepless devs that copy-paste examples more than we’re willing to admit, it’s a setting in your project config:
def project do
[
...
start_concurrently: true
]
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