don't change state after application started #437
Merged
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Description
corresponds to: https://github.com/aio-libs/aiohttp/blob/master/aiohttp/web_app.py#L146 and https://docs.aiohttp.org/en/stable/web_advanced.html#background-tasks
Related issues
Type of change
Changes Made
on_startup
for theweb.Application
Testing
Mentions
Pending Testing ... to see if it behaves as it should