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Monthly Archives: December 2009
Google Webmaster Tools 提供 Site Performance 圖表
在「Google’s Site Performance Tool」這邊看到的,Google Webmaster Tools 現在提供網站速度的歷史資料了,像是這樣: 不是很即時,但應該還是有參考價值…
Amazon Web Services 建立美西中心
這個消息已經有陣子了,不過還是整理一下。Amazon 在前幾天宣佈在美西 (實際上是北加州) 建立了新的 data center:「Expanding the AWS Footprint」,包括 S3 與 EC2 都提供美西的節點。 以 S3 的資料來看,美西的節點頻寬費用與之前美國節點相同,但儲存費用大約貴了 10%,request 的費用也一樣貴了 10%。EC2 的部份也是類似的情況。在查過美國電價後,看起來就是差在電力成本上:「Average Retail Price of Electricity to Ultimate Customers by End-Use Sector, by State」。以工業用電來算,維吉尼亞的一度電是 6.84 cent,而加州要 11.75 cent,貴了許多。 EC2 的 instance (server) … Continue reading
Posted in Computer, Murmuring, Network Leave a comment
jQuery 1.4a1 – 終於要出新版了…
在 jQuery 的 blog 上看到 jQuery 1.4a1 的消息:「jQuery 1.4 Alpha 1 Released」,離上次 jQuery 1.3.2 在 2/20 放出來已經過了九個月了… 就時間上來看,最主要的差異是 IE8 (3/19) 與 Firefox 3.5 (6/30) 的釋出,使得 jQuery 在這兩個平台上面的問題比起 IE7 與 Firefox 3.0 稍微多了一些… 目前看起來 1.4 系列除了支援 IE8 以及 Firefox 3.5 外,最主要是把 … Continue reading
Posted in Browser, Computer, Firefox, IE, Murmuring, Network, Programming, Software, WWW Leave a comment
Google 提供 Public DNS Resolver
在 TC 看到 Google 公開了 Public DNS Resolver 服務:「Google Gets Into The DNS Business. Here’s What That Means」。 與 OpenDNS 不同,他不會把無法 resolve 的 request 導到廣告頁,另外又因為密度比 OpenDNS 高 (因為 Google 在很多地方有機房),IP address 又好寄 (分別是 8.8.8.8 與 8.8.4.4),就基本的 resolver 功能來說,OpenDNS 沒有優勢。 不過我發現如果是查詢 … Continue reading
Posted in Computer, DNS, Murmuring, Network 2 Comments
備份與 DRM
在 Slashdot 上看到一個丹麥人很認真的玩起「矛與盾」:「Danish DRM Breaker Turns Himself In To Test Backup Law」。 丹麥的著作權法令允許備份,但不允許破解 DRM。於是他拿到 DVD 後就破解 DRM 備份,然後跑去找反盜版組織「自首」XDDD 結果反盜版組織只說「okay 我們知道了,之後會聯絡你」就沒下文了,這傢伙就跑去找警察自首 XDDD
Posted in Computer, Murmuring, Recreation, Social 3 Comments
使用 Google 提供的 AJAX Libraries 需要注意的細節…
在「How Google is wasting your bandwidth」看到有人發現 Google 所提供的 Google AJAX Libraries 有一些地方處理的非常極端,沒有注意的話反而會使得使用者多花不少頻寬在上面。 以 jQuery 為例,如果直接指定版本,使用 1.3.2:http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js,那麼 Expires 會設定一年左右的時間: Last-Modified: Mon, 23 Nov 2009 18:54:21 GMT Date: Mon, 30 Nov 2009 22:03:29 GMT Expires: Tue, 30 Nov 2010 22:02:37 GMT Cache-Control: … Continue reading
