Hangfire Clean up

[adnan-kamili]

Please refer to the following at the bottom:

https://github.com/HangfireIO/Hangfire/issues/1705

[ahydrax]

Hi there, Could you launch select count(*) from hangifre.[table_name] where expireat is null for the following tables: Counter, Job, Jobparameter, State?

[adnan-kamili]

Thanks for looking into this. Here are the results:

select count(*) from hangfire.counter where expireat is null : 202,560,245

select count(*) from hangfire.job where expireat is null: 1

I manually ran this to clean this up:

delete from hangfire.job where expireat is not null and expireat < now()otherwise it was 163 million.

select count(*) from hangfire.jobparameter // no expireat column: 163 ( I ran the delete query, previously it was 126 million)

select count(*) from hangfire.state // no expireat column: 537 ( I ran the delete query, previously it was189 million)

[adnan-kamili]

select key, sum(value) from counter where key in (?, ?) group by key

The above query pushes the AWS Aurora Postgres to limits. Any query you suggest to cleanup this table?

[adnan-kamili]

I ran this query to cleanup:

delete from hangfire.counter where key = 'stats:succeeded'

It took 15 mins.

And then:

delete from hangfire.counter where expireat is not null

Now it has only three rows

[ahydrax]

Thanks for the info you provided!

What version of package do you use now?

[adnan-kamili]

 <PackageReference Include="Hangfire.AspNetCore" Version="1.7.27" />
 <PackageReference Include="Hangfire.PostgreSql.ahydrax" Version="1.7.4" />

[adnan-kamili]

Now, I see a new weird behaviour:

autovacuum: VACUUM hangfire.counter

is continuously timing out.

[ahydrax]

It looks like autovacuum is enabled in AWS Aurora Postgres by default. You can try to launch it manually in query console. My package doesn't call vacuum explicitly.