hi, appengine docs says -
*"*When implementing the code for tasks (as worker URLs within your app), it is important to consider whether the task is idempotent<http://en.wikipedia.org/wiki/idempotent>. App Engine's Task Queue API is designed to only invoke a given task once, however *it is possible in exceptional circumstances that a task may execute multiple times* (e.g. in the unlikely case of major system failure). Thus, your code must ensure that there are no harmful side-effects of repeated execution.*"* my doubt is - in exceptional circumstances, is it possible that repeated task executions happen in parallel (i.e. multiple invocations of same task on same or different systems at the same time) ? -- Prashant -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.