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News & Views

Posted by Preaction
on 9th August 2017

Summary: I will be doing work on the Metabase API on 2017-08-12. Writing test reports may be unresponsive for a few minutes, and there may be bugs. Please let me know if there are any problems submitting test reports.

I have completed the processing script for the new test report format. This was the last step in moving the Metabase API away from Amazon and on to our MySQL cluster for cost and stability reasons: Amazon SimpleDB is too expensive, and its limitations for our purposes outweigh its costs. We have always maintained a copy of the Metabase data in our MySQL database, and there's no real need to continue having two live copies of the same data (especially when one of the copies costs money every time you ask for a piece of data).

This Saturday, 2017-08-12, around 1:00 PM US/Central (18:00 UTC), I will be switching DNS over to the new, backwards-compatible Metabase API which writes to our MySQL database. A few months ago, I asked for testers to try this new API out, and everything went well (thanks to everyone who helped with that). The new API works the same as the old API: No changes are needed for your testers or anyone consuming the minimal data feeds out of the Metabase API (the log.txt view).

Since this is only a DNS change, the downtime for the change should be zero as DNS propagates and your testers are pointed at the new IP address. Since it's possible for me to mess up this change, there may be some downtime. Since all software has bugs, there may be some downtime if any bugs are revealed by all the testers being migrated to the new API.

This change (and all the work around this change) sets up the project for new changes down the road:

  • Speeding up report processing by triggering individual processing jobs
  • Distributing those jobs over multiple machines to improve performance
  • Making test report text available immediately after submission

If you have any questions, you can join the CPAN Testers discussion mailing list, or e-mail me directly.

June 2017 (1) >>