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I have a script which uses ajax(json) to fetch Google suggestions(xml), demo: JsFiddle
I think it reacts to slow, especially on the first keyup. So I want to speed it up. I first thought of doing the request on keydown instead of the default keyup. But that didn’t speed it up and caused another problem; it was not possible to come down in the list anymore. So my question is: Is there any way of speeding up the first keyup(suggestions), and maybe the whole thing all together?
I think you should speed up your Server side search engine first.
+ You could do auto complete just after user typed more than 3 or 4 letters. (Then it will pass less search result)
+ You could give some limits for your search query in server side
+ Also assign right indexes for the tables.
Also you could use Cache for search result.