angularCacheService.js

/*Usage:

return cacheService({                         // Replace the $http() with cacheService
    url: serviceBase.serviceBaseUri + '/GetSeriesTeam',
    method: 'POST',                             // Works for POST only currently
    methodName: 'GetSeriesTeam',              // Optional, but recommended if different services use same post object properties.
    data: params
}, 10).then(function(response) {              // The 10 specifies time duration to cache this object in memory
    return response.data;
})*/


! function() {
    'use strict';

    angular.module('app.cacheService', [])

    .factory('cacheService', ['$q', '$http',
        function($q, $http) {

            var db = {};

            var _paramsToStr = function(obj, methodName) {
                var methodName = methodName || '';
                var str = '';
                for (var key in obj) {
                    str += methodName + '_' + key + '-' + obj[key] + '_';
                };
                return str;
            };

            var _post = function(callParams, cacheDuration) {
                var cacheDuration = parseInt(cacheDuration) || 0.5;
                var deferred = $q.defer();
                var query = _paramsToStr(callParams.data, callParams.methodName);
                if ((db[query] && db[query].result) && (new Date() < new Date(db[query].insertedOn.getTime() + (cacheDuration * 60000)))) { // 60000 millisecs makes a minute
                    setTimeout(function() { // angular doesnt like blazing fast resolves
                        deferred.resolve(JSON.parse(JSON.stringify(db[query].result)));
                    }, 100);
                } else {

                    db[query] = {};

                    $http({
                        url: callParams.url,
                        method: callParams.method,
                        data: callParams.data,
                        cache: false
                    }).then(function(response) {
                        if (response.status == 200) {
                            db[query].result = JSON.parse(JSON.stringify(response));
                            db[query].insertedOn = new Date();
                        }
                        deferred.resolve(JSON.parse(JSON.stringify(response)));
                    });

                };

                return deferred.promise;
            };

            return _post

        }
    ])

}();