## Amazon SES 寄到 Gmail 受到阻擋的情況

Amazon SES 預設是共用 IP pool，所以遇到這種情況不算太意外，但應該是暫時性的，不過發問的作者有提到後來的解法是花 US$25/mo 使用 Dedicated IP 解決 IP reputation 的問題 (在 id=37177533 這邊)： Thanks you all for comments. I have made a decision to subscribed to dedicated IPs (credits: @slau). The differentiating factor between our current AWS SES plan and the competitors (mentioned in the comments) is having a dedicated IP. With our current volume, none of the competitors are anyway near AWS SES costs. So, moving to a dedicated IPs thats cost 25$ extra not only solves our issue, but also no change in code/infrastructure.

## Amazon S3 的新數字

Werner Vogels 寫了一篇在回憶 Amazon S3 的文章：「Building and operating a pretty big storage system called S3」，裡面有個是他這個層級比較容易取得公開權限的資料：

Amazon Web Services introduced Amazon S3 in 2006. Amazon reported it stored more than 100 trillion objects as of March 2021, up from 10 billion objects in October 2007, 14 billion objects in January 2008, 29 billion objects in October 2008, 52 billion objects in March 2009, 64 billion objects in August 2009, 102 billion objects in March 2010, and 2 trillion objects in April 2013.

## Amazon SES 總算支援 2048 bits RSA key 了

Amazon SES 總算是支援 2048 bits RSA key 了：「Amazon SES now supports 2048-bit DKIM keys」。

Until now, Amazon SES supported a DKIM key length of 1024-bit, which is the current industry standard.

## Amazon SQS 推出量大折扣...

Amazon SQS 推出了分級計價，不過看了一下「Amazon SQS pricing」這邊的表格，一般的單位大概是不太會遇到：「Amazon SQS announces tiered pricing」。

## 證明圓周率 π 是無理數

$\frac{d}{dx} sin(x) = cos(x)\newline\newline\frac{d}{dx} cos(x) = -sin(x)$

$\frac{d}{dx} f(x)g(x) = f'(x)g(x) + f(x)g'(x)$

## Amazon SES 開東京區與新加坡區了...

Amazon SES 是 2011 年年初發表的服務，過了九年總算想起來這幾區也是需要 SES 的服務了...：「Amazon Simple Email Service is now available in the US East (Ohio), Asia Pacific (Singapore), Asia Pacific (Tokyo), and Asia Pacific (Seoul) Regions」。

## 美國政府對於書面文字的要求

(Before) The amount of expenses reimbursed to a claimant under this subpart shall be reduced by any amount that the claimant receives from a collateral source. In cases in which a claimant receives reimbursement under this subpart for expenses that also will or may be reimbursed from another source, the claimant shall subrogate the United States to the claim for payment from the collateral source up to the amount for which the claimant was reimbursed under this subpart.

(After) If you get a payment from a collateral source, we will reduce our payment by the amount you get. If you get payments from us and from a collateral source for the same expenses, you must pay us back the amount we paid you.

## AWS 推出更便宜的儲存方案 Glacier Deep Archive

AWS 推出的這個方案價錢又更低了：「New Amazon S3 Storage Class – Glacier Deep Archive」。

Glacier Deep Archive 在取得時 first byte 的保證時間是 12 小時，另外最低消費是 180 天：

Retrieval time within 12 hours

Configurable retrieval times, from minutes to hours

Pricing for each of these metrics is determined by the speed at which data is requested based on three options. "Expedited" queries <250 MB are typically returned in 1-5 minutes. "Standard" queries are typically returned in 3-5 hours. "Bulk" queries are typically returned in 5-12 hours.

## SQS 可以打進 Lambda 了...

We can now use Amazon Simple Queue Service (SQS) to trigger AWS Lambda functions! This is a stellar update with some key functionality that I’ve personally been looking forward to for more than 4 years. I know our customers are excited to take it for a spin so feel free to skip to the walk through section below if you don’t want a trip down memory lane.

By adding support for SQS to Lambda we’re removing a lot of the undifferentiated heavy lifting of running a polling service or creating an SQS to SNS mapping.

There are no additional charges for this feature, but because the Lambda service is continuously long-polling the SQS queue the account will be charged for those API calls at the standard SQS pricing rates.