Allow configuring TTL of mapConfigs via "mapConfigTTL"

NEWS.md

@@ -12,6 +12,7 @@ Enhancements:
  * Use single redis pooler for torque and grainstore
  * Reduce cost of garbage collection for localized resources
  * Allow limiting number of templates for each user (#136)
+ * Allow configuring TTL of mapConfigs via "mapConfigTTL"
 
 1.7.1 -- 2014-02-11
 -------------------

config/environments/development.js.example

@@ -26,6 +26,11 @@ var config = {
     ,maxConnections:128
     // Maximum number of templates per user. Unlimited by default.
     ,maxUserTemplates:1024
+    // Seconds since "last creation" before a detached
+    // or template instance map expires. Or: how long do you want
+    // to be able to navigate the map without a reload ?
+    // Defaults to 7200 (2 hours)
+    ,mapConfigTTL: 7200,
     // idle socket timeout, in miliseconds 
     ,socket_timeout: 600000
     ,enable_cors: true

config/environments/production.js.example

@@ -26,6 +26,11 @@ var config = {
     ,maxConnections:128
     // Maximum number of templates per user. Unlimited by default.
     ,maxUserTemplates:1024
+    // Seconds since "last creation" before a detached
+    // or template instance map expires. Or: how long do you want
+    // to be able to navigate the map without a reload ?
+    // Defaults to 7200 (2 hours)
+    ,mapConfigTTL: 7200,
     // idle socket timeout, in miliseconds
     ,socket_timeout: 600000 
     ,enable_cors: true

config/environments/staging.js.example

@@ -26,6 +26,11 @@ var config = {
     ,maxConnections:128
     // Maximum number of templates per user. Unlimited by default.
     ,maxUserTemplates:1024
+    // Seconds since "last creation" before a detached
+    // or template instance map expires. Or: how long do you want
+    // to be able to navigate the map without a reload ?
+    // Defaults to 7200 (2 hours)
+    ,mapConfigTTL: 7200,
     // idle socket timeout, in miliseconds
     ,socket_timeout: 600000 
     ,enable_cors: true

config/environments/test.js.example

@@ -26,6 +26,11 @@ var config = {
     ,maxConnections:128
     // Maximum number of templates per user. Unlimited by default.
     ,maxUserTemplates:1024
+    // Seconds since "last creation" before a detached
+    // or template instance map expires. Or: how long do you want
+    // to be able to navigate the map without a reload ?
+    // Defaults to 7200 (2 hours)
+    ,mapConfigTTL: 7200,
     // idle socket timeout, in miliseconds
     ,socket_timeout: 600000 
     ,enable_cors: true

lib/cartodb/server_options.js

@@ -47,8 +47,8 @@ module.exports = function(){
           datasource: global.environment.postgres,
           cachedir: global.environment.millstone.cache_basedir,
           mapnik_version: global.environment.mapnik_version || mapnik.versions.mapnik,
-          default_layergroup_ttl: 7200, // seconds (default is 300)
+          default_layergroup_ttl: global.environment.mapConfigTTL || 7200, 
-          gc_prob: 0.01 // default is 0.01 TODO: make configurable via env config
+          gc_prob: 0.01 // @deprecated since Windshaft-1.8.0
         },
         mapnik: {
           metatile: rendererConfig.metatile,