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Track processed batches and events in target DB
================================================
Batch tracking is OK.
Event tracking is OK if consumer does not use retry queue.
Batch tracking
--------------
is_batch_done(consumer, batch)
returns:
true - batch is done already
false - batch is not done yet
set_batch_done(consumer, batch)
returns:
true - tagging successful, batch was not done yet
false - batch was done already
Event tracking
--------------
is_batch_done(consumer, batch, event)
returns:
true - event is done
false - event is not done yet
set_batch_done(consumer, batch, event)
returns:
true - tagging was successful, event was not done
false - event is done already
Fastvacuum
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pgq.ext.completed_batch
pgq.ext.completed_event
pgq.ext.completed_tick
pgq.ext.partial_batch
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