Zoom has admitted it doesn’t have 300 million daily active users. The admission came after The Verge noticed the company had quietly edited a blog post making the claim earlier this month. Zoom originally stated it had “more than 300 million daily users” and that “more than 300 million people around the world are using Zoom during this challenging time.” Zoom later deleted these references from the original blog post, and now claims “300 million daily Zoom meeting participants.”
The difference between a daily active user (DAU) and “meeting participant” is significant. Daily meeting participants can be counted multiple times: if you have five Zoom meetings in a day then you’re counted five times. A DAU is counted once per day, and is commonly used by companies to measure service usage. Only counting meeting participants is an easy, somewhat misleading, way to make your platform usage seem larger than it is.
AWS 吸血吸的太過份了,連 AZ 間的流量都收高價 (跟跨 region 一樣的錢)
所以如果你 deploy k8s 在 AWS,預設的情況都是 cross-AZ,然後你還搞 micro service 的話,流量一大就會看到帳單出現以前從沒見過的收費 - 那些你在 service/pod 間的呼叫通通要錢
microservice 就是要吃大流量才想用的架構,但你一上雲端就是吃光你的錢。