php - Why query is slow using ajax? -


i made php class search database methods. i.e like, full text , ...

i did test on huge database. search speed great, started use script in page.

i decided use ajax speed stuff...

this ajax code :

    $.ajax({         type: "post",         data: publisher + '&blur=true',         url:"server/advance2.php",         ifmodified: true, /* tested , without */         cache: true, /* tested , without */         statuscode: { 404: function() {                  $('#target').html('<h4 class="col-md-offset-4 col-md-3 textred textcenter farsi">error...</h4>');              }//404         },//statuscode         beforesend: function() {              $('#target').html('<img src="e995a9c2864f.gif" class="col-md-offset-4 col-md-3" alt="we searching, please wait"/>');          },         success: function(result) {             $('#target').html(result)         }      });//ajax request after blur

but search speed decreased.

would tell me why it's happening, , how can fix it?

a couple of quick debugging ideas:

1) open browser debugger, started f12, make sure the majority of time of response waiting on web server (vs rendering, etc.).

2) on server side, find db query log , see how long query taking. noted in other answers, there number of moving parts here. need step step , find 1 that's taking longer expected.


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