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pg_advisory_lock vs. pg_try_advisory_lock #80

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@AleksandrLeontev

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@AleksandrLeontev

Why do you use pg_try_advisory_lock and not just simple pg_advisory_lock which will avoid polling in SQL?

You can plan with this example:

  def with_advisory_lock(lock_id)
    execute("SELECT pg_advisory_lock(#{lock_id})")
    yield
  ensure
    execute("SELECT pg_advisory_unlock(#{lock_id})")
  end

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