Cewolf - producer's data is invalidated

[MichaelJ McCabe]

Hi Ulf.

I had a question regarding this. within the PageViewCountData class, there is a method "hasExpired" which returns whether the producer's data is over 5 seconds old or not.

I wanted to fully understand this, and perhaps solve the reason why I'm getting problems. Does this mean that after 5 seconds the date is set to be invalidated? The reason I bring this up, is that I am getting problems that sometimes, on page load, the content of the graphs are not showing. Now this could be down to multiple reason, of which I am checking, but this interested me and I thought i'd ask.

Does it mean that if the page takes longer than 5 seconds to load, the content will not show? I may be being stupid, but if this IS the case, how do I go about extending this?

[Ulf Dittmer]

The method is part of the DatasetProducer interface, the javadocs of which have more information about how it's used.

The gist is that it would not result in no image being produced, but incorrect use of it may lead to the produceDataset method being called more (or less) often than necessary (which may be a performance or correctness issue, depending on what that method does).