Tag Archives: ttl

除了 DNS 的 TTL 外,還有瀏覽器本身的 cache time...

在看「Reviewing Fastly’s New Approach To Load Balancing In The Cloud」這篇的時候被提醒: However, most browsers have implemented their own caching layer that can override the TTL specified by the server. In fact, some browsers cache for 5-10 minutes, which is an eternity … Continue reading

Posted in Browser, Computer, DNS, Firefox, GoogleChrome, IE, Murmuring, Network, Software, WWW | Tagged , , , , | 1 Comment

DynamoDB 推出 TTL 功能

DynamoDB 推出了依照時間自動刪除的功能:「New – Manage DynamoDB Items Using Time to Live (TTL)」。 You can enable this feature on a table-by-table basis, specifying an item attribute that contains the expiration time for the item. 這個功能比較特別的是,刪除的 scan 是不收取費用的: There is no charge for … Continue reading

Posted in AWS, Cloud, Computer, Database, Murmuring, Network, Programming, Software | Tagged , , , , , , , , , | Leave a comment

Adobe Typekit 對 PageSpeed 的妥協

Adobe Typekit 是個收費的網頁字型服務,為了讓變更可以儘快生效,用了比較短的 cache time: We use a short cache time for the kit JavaScript so that you can update your kit (for example, adding fonts, or changing the list of allowed domains) and have your changes live in a … Continue reading

Posted in CDN, Cloud, Computer, Murmuring, Network, WWW | Tagged , , , , , , , , , , , , | Leave a comment