Adds a feature flag to cache timed out tile requests: cacheOnTimeout

config/environments/development.js.example

@@ -196,6 +196,9 @@ var config = {
 
     // Use this as a feature flags enabling/disabling mechanism
     ,enabledFeatures: {
+        // whether a timed out render request should be cached in memory after is computed or not
+        // beware keeping it will grow up the memory usage
+        cacheOnTimeout: false,
         // whether it should intercept tile render errors an act based on them, enabled by default.
         onTileErrorStrategy: true,
         // whether the affected tables for a given SQL must query directly postgresql or use the SQL API

config/environments/production.js.example

@@ -196,6 +196,9 @@ var config = {
 
     // Use this as a feature flags enabling/disabling mechanism
     ,enabledFeatures: {
+        // whether a timed out render request should be cached in memory after is computed or not
+        // beware keeping it will grow up the memory usage
+        cacheOnTimeout: false,
         // whether it should intercept tile render errors an act based on them, enabled by default.
         onTileErrorStrategy: true,
         // whether the affected tables for a given SQL must query directly postgresql or use the SQL API

config/environments/staging.js.example

@@ -196,6 +196,9 @@ var config = {
 
     // Use this as a feature flags enabling/disabling mechanism
     ,enabledFeatures: {
+        // whether a timed out render request should be cached in memory after is computed or not
+        // beware keeping it will grow up the memory usage
+        cacheOnTimeout: false,
         // whether it should intercept tile render errors an act based on them, enabled by default.
         onTileErrorStrategy: true,
         // whether the affected tables for a given SQL must query directly postgresql or use the SQL API

config/environments/test.js.example

@@ -192,6 +192,9 @@ var config = {
 
     // Use this as a feature flags enabling/disabling mechanism
     ,enabledFeatures: {
+        // whether a timed out render request should be cached in memory after is computed or not
+        // beware keeping it will grow up the memory usage
+        cacheOnTimeout: false,
         // whether it should intercept tile render errors an act based on them, enabled by default.
         onTileErrorStrategy: true,
         // whether the affected tables for a given SQL must query directly postgresql or use the SQL API

lib/cartodb/server_options.js

@@ -269,6 +269,7 @@ module.exports = function(redisPool) {
             function handleTilerLimits(err, renderLimit) {
                 assert.ifError(err);
                 rendererOptions.limits = {
+                    cacheOnTimeout: global.environment.enabledFeatures.cacheOnTimeout || false,
                     render: renderLimit
                 };
                 return null;