Changeset 28532 for trunk/admin/themes/default/js/LocalStorageCache.js

Timestamp:

May 24, 2014, 4:18:04 PM (10 years ago)

Author:

mistic100

Message:

feature 3077 : improve cache invalidation

• add "lastmodified" automatic field for categories, groups, users, tags and images tables
• provide a "server key" to the client cache manager

File:

• trunk/admin/themes/default/js/LocalStorageCache.js (modified) (4 diffs)

trunk/admin/themes/default/js/LocalStorageCache.js

@@ -1 @@
-var LocalStorageCache = function(key, lifetime, loader) {
-  this.key = key;
-  this.lifetime = lifetime*1000;
-  this.loader = loader;
+var LocalStorageCache = function(options) {
+  this.key = options.key + '-' + options.serverId;
+  this.serverKey = options.serverKey;
+  this.lifetime = options.lifetime ? options.lifetime*1000 : 3600*1000;
+  this.loader = options.loader;
   
   this.storage = window.localStorage;
@@ -15 +16 @@
     var cache = JSON.parse(this.storage[this.key]);
     
-    if (now - cache.timestamp <= this.lifetime) {
+    if (now - cache.timestamp <= this.lifetime && cache.key == this.serverKey) {
       callback(cache.data);
       return;
@@ -22 +23 @@
   
   this.loader(function(data) {
-    if (that.ready) {
-      that.storage[that.key] = JSON.stringify({
-        timestamp: now,
-        data: data
-      });
-    }
-    
+    that.set.call(that, data);
     callback(data);
   });
@@ -35 +30 @@
 LocalStorageCache.prototype.set = function(data) {
   if (this.ready) {
-    that.storage[that.key] = JSON.stringify({
+    this.storage[this.key] = JSON.stringify({
       timestamp: new Date().getTime(),
+      key: this.serverKey,
       data: data
     });