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fix(backend): return Unit from async refreshCountryUsage - #616
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SchedulingService is annotated with @async, which only supports void or Future return types. The expression body of refreshCountryUsage returned the Int from CountryUsageService.refresh(), so every run failed with "Invalid return type for async method". Add a test that checks all scheduled methods return void or Future. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Problem
The edge image from master logs this error each time the country usage refresh runs:
SchedulingServiceis annotated@Asyncat class level.refreshCountryUsage()(added in #606) had an expression body, so it returned theIntfromCountryUsageService.refresh(). Spring rejects that before the task runs, so country usage was never refreshed.Fix
Unit/void. No other scheduled method was affected.SchedulingServiceTest, which uses reflection to check that every@Scheduledmethod returnsvoidorFuture. I confirmed it fails against the old code.🤖 Generated with Claude Code