hey guys :slightly_smiling_face: what’s the best p...
# helpf
Fabian Ehringer
10/04/2021, 2:23 PMhey guys 🙂 what’s the best practice for bigger projects. Do you recommend splitting the SST app into multiple smaller apps? Running
yarn startyarn startt
thdxr
10/04/2021, 2:23 PMCan you tell us more about what is happening during yarn start that is slowing things down?
thdxr
10/04/2021, 2:23 PMTypically after first run, yarn start should have nothing to do
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Fabian Ehringer
10/04/2021, 2:33 PMwe have 8 stacks per domain (micro-service) and each stack has up to 4 sub stacks. Just iterating through all the stacks takes a long time. Executing
yarn startt
thdxr
10/04/2021, 2:42 PMwow that's crazy
thdxr
10/04/2021, 2:42 PMYeah it seems like you should have multiple sst apps at this point. I'm still curious to see why just compiling all the stacks into cdk takes so long
thdxr
10/04/2021, 2:43 PMAnother thing you could do is in your app ts file
thdxr
10/04/2021, 2:44 PMyou can conditionally initialize stacks
thdxr
10/04/2021, 2:44 PM Copy code
if (app.local && process.env["SERVICE_I_AM_WORKING_ON"]) {
// only initialize minimum needed stacks
}thdxr
10/04/2021, 2:44 PMProbably would have to be more sophisticated than that but the idea is you can control what spins up in your entry point
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Fabian Ehringer
10/04/2021, 2:57 PMoh yeah, that’s a good idea too. haven’t thought about that
Fabian Ehringer
10/04/2021, 2:57 PMwould you recommend splitting bigger projects in smaller sst apps anyways?
t
thdxr
10/04/2021, 3:11 PMI'm always hesitant to split stuff up. Even for multiple stacks I wait until I really have to, same for services and same for apps
thdxr
10/04/2021, 3:11 PMso I'd say avoid it for as long as you can
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Fabian Ehringer
10/04/2021, 5:48 PMthanks for the help. I’ll try your approach
Fabian Ehringer
10/04/2021, 5:49 PMare there any good example sst projects about how to structure stacks and source code in a big project in production?
t
thdxr
10/04/2021, 5:50 PMWe don't have examples as big as yours, I put together this one which I think is a good pattern for a fairly large app: https://github.com/serverless-stack/serverless-stack/tree/master/examples/typescript-monorepo
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Fabian Ehringer
10/04/2021, 5:53 PMthank you very much. I appreciate the help 🙂
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Frank
10/04/2021, 6:11 PM
Yeah agreed with @thdxr on not splitting up too early. @Fabian Ehringer can you run sst start once more without commenting out any stacks, and DM me your
.build/sst-debug.logFrank
10/04/2021, 6:11 PM
That will give us an idea on what’s taking long.
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Fabian Ehringer
10/04/2021, 9:07 PM@Frank I sent you the
.build/sst-debug.logFabian Ehringer
10/04/2021, 9:22 PMI’m curious about how to split stacks later on. If I already know that my application will have “independent” and complex subdomains which can be seen as services, isn’t it better to split early on? A split like in the attached graphic will be difficult if the system’s already running in production, right? Or am I missing something?
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