GraphQL ToDo App should have non-default DB initialization timeout

[eeverman]

The DB configuration for the micronaut-graphql-todo app has no initialization-fail-timeout set. The default for that is 1ms, so if your machine happens to be a bit busy or slow, the app fails to start with a DB connection error. Adding initialization-fail-timeout: 20000 (20 seconds) would fix this for all but the slowest machines.

So that section would look like this:

#tag::datasource[]
datasources:
  default:
    driverClassName: org.postgresql.Driver  # <2>
    dialect: POSTGRES # <3>
    schema-generate: NONE # <4>
    initialization-fail-timeout: 20000
#end::datasource[]

[eeverman]

Note: I created a MR for this one project, but probably all the sample projects w/ a DB connection should have similar configuration.

[sdelamo]

I don't know if the place to change this is in the tutorials. If the default is too aggressive, I think we should change the default.

[sdelamo]

thoughts @dstepanov ?

[dstepanov]

Do we use test resources? The test container should wait till the database is ready