Shared cache for affected tables in layergroup and map controllers

lib/cartodb/server.js

@@ -20,6 +20,7 @@ var TemplateMaps = require('./backends/template_maps.js');
 var QueryTablesApi = require('./api/query_tables_api');
 var UserLimitsApi = require('./api/user_limits_api');
 var AuthApi = require('./api/auth_api');
+var LayergroupAffectedTablesCache = require('./cache/layergroup_affected_tables');
 var PgQueryRunner = require('./backends/pg_query_runner');
 var PgConnection = require('./backends/pg_connection');
 
@@ -161,6 +162,9 @@ module.exports = function(serverOptions) {
     var mapValidatorBackend = new windshaft.backend.MapValidator(tileBackend, attributesBackend);
     var mapBackend = new windshaft.backend.Map(rendererCache, mapStore, mapValidatorBackend);
 
+    var layergroupAffectedTablesCache = new LayergroupAffectedTablesCache();
+    app.layergroupAffectedTablesCache = layergroupAffectedTablesCache;
+
     var authApi = new AuthApi(pgConnection, metadataBackend, mapStore, templateMaps);
 
     app.findStatusCode = function(err) {
@@ -191,8 +195,10 @@ module.exports = function(serverOptions) {
         tileBackend,
         previewBackend,
         attributesBackend,
+        surrogateKeysCache,
         userLimitsApi,
-        queryTablesApi
+        queryTablesApi,
+        layergroupAffectedTablesCache
     ).register(app);
 
     new controller.Map(
@@ -203,7 +209,8 @@ module.exports = function(serverOptions) {
         metadataBackend,
         queryTablesApi,
         surrogateKeysCache,
-        userLimitsApi
+        userLimitsApi,
+        layergroupAffectedTablesCache
     ).register(app);
 
     new controller.NamedMaps(