Set directive 'max-age' to 5 min when there are affacted tables where we can't know when were updated for the last time, e.g: non cartodified tables or foreing tables without cartodb support

config/environments/development.js.example

@@ -326,6 +326,7 @@ var config = {
         purge_enabled: false, // whether the purge/invalidation mechanism is enabled in varnish or not
         secret: 'xxx',
         ttl: 86400,
+        fallbackTtl: 300,
         layergroupTtl: 86400 // the max-age for cache-control header in layergroup responses
     }
     // this [OPTIONAL] configuration enables invalidating by surrogate key in fastly

config/environments/production.js.example

@@ -326,6 +326,7 @@ var config = {
         purge_enabled: false, // whether the purge/invalidation mechanism is enabled in varnish or not
         secret: 'xxx',
         ttl: 86400,
+        fallbackTtl: 300,
         layergroupTtl: 86400 // the max-age for cache-control header in layergroup responses
     }
     // this [OPTIONAL] configuration enables invalidating by surrogate key in fastly

config/environments/staging.js.example

@@ -326,6 +326,7 @@ var config = {
         purge_enabled: false, // whether the purge/invalidation mechanism is enabled in varnish or not
         secret: 'xxx',
         ttl: 86400,
+        fallbackTtl: 300,
         layergroupTtl: 86400 // the max-age for cache-control header in layergroup responses
     }
     // this [OPTIONAL] configuration enables invalidating by surrogate key in fastly

config/environments/test.js.example

@@ -328,6 +328,7 @@ var config = {
         purge_enabled: false, // whether the purge/invalidation mechanism is enabled in varnish or not
         secret: 'xxx',
         ttl: 86400,
+        fallbackTtl: 300,
         layergroupTtl: 86400 // the max-age for cache-control header in layergroup responses
     }
     // this [OPTIONAL] configuration enables invalidating by surrogate key in fastly