npm i ajax-cache --save

$.ajax({

    url: "http://rapapi.org/mockjsdata/9195/common/getRandom",

    dataType:'json',

    localCache: 'snapshot',

    success: function(res) {

        if (res.snapshot) {

            console.log('[snapshot] ' + res.data);

        } else {

            console.log('[remote data] ' + res.data);

        }

    }

});

$.ajax({

    url: "http://rapapi.org/mockjsdata/9195/common/getRandom",

    dataType:'json',

    localCache: 5000,

    success: function(res) {

        console.log('\n[Caching for 5 seconds] ' + res.data);

    }

});

$.ajax({

    url: "http://rapapi.org/mockjsdata/9195/common/getRandom",

    dataType:'json',

    localCache: false,

    success: function(res) {

        console.log('Cache has been cleared');

        console.log(res.data);

    }

});

$.ajaxCache.clear();

$.ajaxCache.set({

    storage: 'localStorage',        //存储方式，默认"localStorage"，可选择"sessionStorage"

    cacheNamePrefix: '_ajaxcache'   //存储前缀，通常不需要修改

});