From a5b9ca706cbde7a981b89f9cf02ce6d50da8f6f3 Mon Sep 17 00:00:00 2001
From: Raul Ochoa <rochoaf@gmail.com>
Date: Mon, 27 Apr 2015 16:18:50 +0200
Subject: [PATCH] Adds new fastly cache backend

---
 lib/cartodb/cache/backend/fastly.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 lib/cartodb/cache/backend/fastly.js

diff --git a/lib/cartodb/cache/backend/fastly.js b/lib/cartodb/cache/backend/fastly.js
new file mode 100644
index 00000000..91cf162a
--- /dev/null
+++ b/lib/cartodb/cache/backend/fastly.js
@@ -0,0 +1,18 @@
+var FastlyPurge = require('fastly-purge');
+
+function FastlyCacheBackend(apiKey, serviceId, softPurge) {
+    this.serviceId = serviceId;
+    this.fastlyPurge = new FastlyPurge(apiKey, { softPurge: softPurge || true });
+}
+
+module.exports = FastlyCacheBackend;
+
+/**
+ * @param cacheObject should respond to `key() -> String` method
+ * @param {Function} callback
+ */
+FastlyCacheBackend.prototype.invalidate = function(cacheObject, callback) {
+    this.fastlyPurge.key(this.serviceId, cacheObject.key(), callback);
+};
+
+module.exports = FastlyCacheBackend;