[doc] Add an ADR on the introduction of performance tests

[sbegaudeau]

Signed-off-by: Stéphane Bégaudeau stephane.begaudeau@obeo.fr

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[frouene]

to share utility services

[sbegaudeau]

Done

[pcdavid]

Maybe it's out of scope for this particular ADR, but it's not clear to me where/how/when the tests will be executed.

I guess for a first iteration we simply need to get things running we can run everything locally on our dev machines, but this means the DB, the backend, and Gatling itself will run on the same host, competing for resources and avoiding all/most network-related costs.

[sbegaudeau]

Maybe it's out of scope for this particular ADR, but it's not clear to me where/how/when the tests will be executed.

I have the same concerns and right know, I don't know. I just want to ensure that they are executed frequently on our CI to ensure that they are still working properly but to really extract some metrics that we can keep over time, we will have to figure it out. Maybe have a dedicated machine running Sirius Web somewhere to use as a target to run the test.