jquery - Caching AJAX results with PHP -

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i have ajax call retrieves lines file via json. have 3m rows in database , want show result cannot see anything.

the results retrieved via json wanted cache, if data requested more once, not send request again. best practices caching in jquery?

i use php in server side. suggestions appreciated.

my javascript code:

function getsearchresult(char,company,category,country,page) {     $.ajax({         type: "post",         url: "companyresult.php",         data: {             mysearchchar : char,             mysearchcompany : company,             mysearchcategory : category,             mysearchcountry : country,             mypage : page               },         cache: false,         datatype : "html",     beforesend: function(){         $("#loading").show(); //show image loading          $('html, body').animate({scrolltop:$('#insid_body_web').offset().top}, 'slow');         $("#resultcompany1").hide();          $("#resultcompany2").hide();         $("#errorsearch").hide();      },     complete: function(){        $("#loading").hide(); //hide image loading        $("#resultcompany1").show();         $("#resultcompany2").show();        $("#errorsearch").hide();      },     success: function(data){     $(".insid_body_web").html(data);     $('html, body').animate({scrolltop:$('#insid_body_web').offset().top}, 'slow');     $("#resultcompany1").show();     $("#resultcompany2").show();      $("#errorsearch").hide();     $(".insid_body_web").css("min-height","1397px");     },     error: function() {     $("#errorsearch").show();     $("#resultcompany1").hide();     $("#resultcompany2").hide();      }, }); }

and php function result:

public function selectallcompanydatabypagingbycat($char,$company,$cat,$country,$from,$records) {     $sql ="select company_compname,company_phone,company_site,company_id      company         company_delete ='0'      , company_request = '0' ";     if ($cat !=""){ $sql .= " , company_compcat = '".$cat."' "; }     if ($company !=""){ $sql .= " , company_compname = '".$company."' "; }     if ($country !=""){ $sql .= " , company_country = '".$country."' "; }     if ($char !=""){ $sql .= " , company_compname '".$char."%' "; }     $sql .= " order company_id desc limit $from,$records";     $query = @mysql_query($sql);     return $query;     mysql_free_result($query);  }

chage data in ajax this

 data: {             "mysearchchar" : char,             "mysearchcompany" : company,             "mysearchcategory" : category,             "mysearchcountry": country,             "mypage" : page               },

and in companyresult.php

$cat = trim($_post['mysearchcategory']); $company = trim($_post['mysearchcompany']); $country = trim($_post['mysearchcountry']);

...... , on...


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