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Known issues and gotchas

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John P. Bloch edited this page Jul 14, 2014 · 2 revisions

Please check the issues list for a list of all currently known issues.

Gotchas

Data race conditions

Early in the library's life, we saw data race conditions in multi-server environments such as WordPress.com VIP due to the post object not propagating to the database cluster and object cache fast enough before the async task tried to retrieve a new post. This meant that when creating a post, the async task would run get_post() on the post ID before the post was in the database and object cache, causing our tasks to fail. We moved the trigger for the request from an immediate invocation to a 'shutdown' invocation and haven't noticed it since then, but it may happen again, so be aware.

  1. Getting Started
  2. action
  3. prepare_data()
  4. run_action()
  5. Advanced Usage
  6. Constructor
  7. Tweaking argument counts
  8. Handling multiple action triggers per request
  9. Security
  10. Known issues and gotchas
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