set cache settings in enviorments

config/environments/development.js

@@ -4,4 +4,7 @@ module.exports.redis            = {host: '127.0.0.1',
                                    port: 6379, 
                                    idleTimeoutMillis: 1,
                                    reapIntervalMillis: 1};
-module.exports.windshaft_port   = 8181;
+module.exports.windshaft_port   = 8181;
+module.exports.lru_cache = true;
+module.exports.lru_cache_size = 10000;
+module.exports.enable_cors = true;

config/environments/production.js

@@ -1,4 +1,6 @@
 module.exports.name             = 'production';
 module.exports.postgres         = {user: 'tileuser', host: '127.0.0.1', port: 6432};
 module.exports.redis            = {host: '127.0.0.1', port: 6379};
-module.exports.windshaft_port   = 8181;
+module.exports.windshaft_port   = 8181;
+module.exports.lru_cache:true,
+module.exports.lru_cache_size: 10000

config/environments/test.js

@@ -4,4 +4,7 @@ module.exports.redis            = {host: '127.0.0.1',
                                    port: 6379, 
                                    idleTimeoutMillis: 1,
                                    reapIntervalMillis: 1};
-module.exports.windshaft_port   = 8080;
+module.exports.windshaft_port   = 8080;
+module.exports.lru_cache = false;
+module.exports.lru_cache_size = 10000;
+module.exports.enable_cors = true;

lib/cartodb/server_options.js

@@ -7,7 +7,9 @@ module.exports = function(){
         base_url: '/tiles/:table',
         grainstore: {datasource: global.environment.postgres},
         redis: global.environment.redis,
-        enable_cors: true
+        enable_cors: global.environment.enable_cors,
+        lru_cache: global.environment.lru_cache,
+        lru_cache_size: global.environment.lru_cache_size
 };
 
 /**
@@ -99,4 +101,4 @@ me.getMapMetadata = function(req, callback){
 };
 
 return me;
-}();
+}();