Tag Archives: aws

Amazon DynamoDB Accelerator (DAX)

DynamoDB 推出的新架構,在系統上幫忙處理 cache:「Amazon DynamoDB Accelerator (DAX) – In-Memory Caching for Read-Intensive Workloads」。 DAX 跟現有的 DynamoDB API 相容: DAX is a fully managed caching service that sits (logically) in front of your DynamoDB tables. It operates in write-through mode, and is … Continue reading

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以後被盜開機器的機種又多一個了:EC2 F1 Instances with FPGAs

又多了一種可以挖 BitCoin 的 instance type 了,AWS 正式推出 F1 Instance:「EC2 F1 Instances with FPGAs – Now Generally Available」。 目前只有在 us-east-1 有,不過有計畫要推到其他地區: Today we are making the F1 instances generally available in the US East (Northern Virginia) Region, with plans to bring … Continue reading

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AWS Lambda 支援 Python 3.6 了

大家都等很久的需求總算推出來了 (雖然我覺得還好...),AWS Lambda 要支援 Python 3.6 了:「AWS Lambda Supports Python 3.6」。會逐步推上線: You can now develop your AWS Lambda functions using Python 3.6. This feature will become available in all AWS Lambda regions within 24 hours.

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Amazon Redshift 壓縮率的改善

Amazon Redshift 對壓縮率的改善:「Data Compression Improvements in Amazon Redshift Bring Compression Ratios Up to 4x」。 首先是引入了 Zstandard: First, we added support for the Zstandard compression algorithm, which offers a good balance between a high compression ratio and speed in build 1.0.1172. … Continue reading

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ALB (Application Load Balancer) 支援對 Host 的分流了

大概是有時候 cluster 太小,ELB 或是 ALB 的費用反而比 cluster 還貴,再加上 ALB 提供起來算方便,所以就推出這樣的功能了:「New – Host-Based Routing Support for AWS Application Load Balancers」。 現在可以針對 Host 欄位決定導到不同的 cluster 上了: 然後讓 ALB 可以設的 rule 數量增加: As part of today’s launch we are raising the maximum number … Continue reading

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Amazon Aurora 改善 ALTER TABLE 時增加 column 的速度

Amazon Aurora (MySQL) 提昇了增加 column 操作的速度:「Amazon Aurora Supports Fast DDL Operations」,細節可以在「Amazon Aurora Under the Hood: Fast DDL」這邊看到。 這次加速是限制在 nullable 欄位: We’re addressing this mess, starting with the most common DDL operation we’ve seen: adding a nullable column at the end … Continue reading

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Amazon EC2 上的 Ubuntu 的效能提昇

Ubuntu 跟 AWS 合作,對 AWS 上 EC2 的 kernel 最佳化:「Ubuntu on AWS gets serious performance boost with AWS-tuned kernel」。 透過各界面拉出來的 Ubuntu 16.04 都將會是對 kernel 最佳化過的版本了: As of March 29th, Ubuntu Cloud Images for Amazon have been enabled with the AWS-tuned … Continue reading

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AWS EU (Stockholm) Region

由老大 Werner Vogels 出來講一些細節... AWS EU (Stockholm) Region 預定在 2018 年開張營業:「Välkommen till Stockholm – An AWS Region is coming to the Nordics」。 The new AWS EU (Stockholm) Region will have three Availability Zones and will be ready for customers to … Continue reading

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AWS Lambda 的 Node.js 支援 6.10 了

AWS Lambda 總算是支援 Node.js 6.10 了:「AWS Lambda Supports Node.js v6.10」。不過 6 還是沒有原生的 async/await,目前的 7 才有... 還是要靠 module 支援。 繼續用 Python 2.7 寫... @_@

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Stripe 對於控制 API 使用量的作法

在「Scaling your API with rate limiters」這篇 Stripe 的 Paul Tarjan 提到了四種如何保護 API 的作法。 前兩種都是 rate limit。第一種是最標準的「你一分鐘可以用幾次」的方式,這是最容易理解的方式。第二種是「你同時間可以用幾個 API request」,這通常會用在大量消耗資源的 API 上,避免短時間內被打爆。 第三種是拉到整體來看,把 API 分成重要與不重要的,然後直接保留確保重要的 API 有一定的 capacity 可以用: We always reserve a fraction of our infrastructure for critical requests. If our … Continue reading

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