Performance Improvement - Possible Side Effects
Wed Dec 28 2005

I have discovered an area of the DearDiary code that is hopelessly inefficient, and that is the area that generates the diary Indexes - that's to say, either the calendar listing or the 'long listing' of your entries. To cut a long story hopefully somewhat shorter, the code would ask for ALL entry data from the database for that diary, possibly stretching back of DD's 6 year history, even if it was only going to display the last 3 months of it. As you can imagine, for the busy diaries with lots of entries, this is pretty awful.

I have adjusted the query to limit the number of entries that DD will look for to 150. This is a hard coded 'magic number' which is a coding practise I hate but it is nothing more than a sticky plaster to hopefully Band Aid a somewhat sluggishly performing server of late. This whole area is being radically redesigned at the moment anyway so it's a temporary fix.

It does possibly mean that your Diary Index isn't showing you all the months you expected - or appears to have missing entries. There may be side effects to this that I haven't considered - so if you think you're experiencing weirdness with your Calendar or some entries aren't appearing properly on your Index or Welcome page, please drop me a note. I shall try to set the 'magic number' at a level where I don't think anyone will be affected but still give the database server half a chance of sending everything out :)

Thanks for your patience,
Steve.
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