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From Janne Jalkanen <>
Subject Re: JSPWiki 3 design notes
Date Wed, 13 Feb 2008 22:01:31 GMT
> The biggest pain point, I suspect is that all of the pages need to  
> be examined at startup time. That's an expensive operation. Similar  
> to how we run the Lucene indexer in a background thread, an easy  
> way to speed up startup would be to initialize the ReferenceManager  
> that way, too.

ReferenceManager actually caches its contents to the workdir (the  
refmgr.ser), so only the first startup is slow; for the rest we just  
deserialize the data.  Variables are also cached.

However, ACLs are not.  And since we do scan through all of the  
pages, the missing ACLs cause a refresh of the entire page.  This  
would be a relatively low-hanging fruit to grab.

> However, that's probably not the whole answer. It seems to me that  
> references (what links to Page X, and what does Page X link to) is  
> also something that should properly be stored as page metadata. So,  
> that's probably part of the solution too. Certainly, part of the  
> plan would be to enable deployers to share page repositories, and  
> references would be part of that.

Yes, it would make sense to store this as the page metadata.   
However, they're not the only thing which are a problem.


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