Travis CI 總算要把 Trusty 當作預設環境了...

Ubuntu 14.04 (Trusty Tahr) 放出三年後,Travis CI 總算想起來該更新了:「Trusty as default Linux is coming」。

With the recent EOL of Ubuntu Precise, we are planning to begin setting the default distribution for builds to Ubuntu Trusty 14.04 on Tuesday, the 18th of July.

然後剩不到兩年又要 EoL 了... XD

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DigitalOcean 推出 High CPU Droplets

DigitalOcean 推出了高 CPU 使用量的 VPS 服務:「Introducing High CPU Droplets」。

價位從 USD$40/month 開始。相較於 Standard Droplet,CPU 的速度提升到 2.5 倍速 (平均):

The current CPUs powering High CPU Droplets are the Intel Broadwell 2697Av4 with a clock speed of 2.6Ghz, and the Intel Skylake 8168 with a clock speed of 2.7Ghz. Customers in our early access period have seen up to four times the performance of Standard Droplet CPUs, and on average see about 2.5 times the performance.

目前早期先開放這些區,八月底會開 FRA1 與 LON1:

These Droplets are available through the Control Panel and the API starting today as capacity allows in SFO2, NYC1, NYC3, TOR1, BLR1, and AMS3. They will be available in FRA1 and LON1 by the end of August.

等 benchmark 數字出來後才會比較清楚跟 AWS 上的 c4.large 系列比起來如何... 不過現在看起來 DigitalOcean 想直接跟 AWS 對決?如果技術上沒有特別的東西,應該會蠻辛苦的... (因為只剩下價格)

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Stripe 香港開台,以及 Alipay 與 WeChat Pay 的支援

看到 Stripe 的幾個大動作:「Stripe in Hong Kong + Alipay and WeChat Pay globally」。

一個是進入香港的消息:

Today, we’re excited to officially launch Stripe in Hong Kong.

另外一個是 Alipay (支付寶) 以及 WeChat Pay (微信支付) 可以透過 Stripe 在全球使用:

So, today we’re introducing global support for Alipay and WeChat Pay, connecting Stripe businesses in 25+ countries to the hundreds of millions of Chinese consumers that actively use these payment methods.

尤其是後面的消息,對於中國的使用者方便不少...

Posted in Computer, Financial, Murmuring, Network, Service | Tagged , , , , , , , , | 1 Comment

懷舊技術系列...

在「Stopping The Internet Of Noise - A Useful Internet Back Again」這邊看到作者在思考現在的工具有很多干擾 (像是 Social Network 這樣的網站),反倒是傳統的一些技術與工具更專注在解決問題本身。

像是 Usenet

IRC:

RSS reader:

有種考古懷舊系列的感覺...

題外化,看到他用的是 BazQux 這個 RSS reader,來測試看看感覺如何,如果可以的話就從 Feedly 換過去好了...

Posted in Blog, Computer, Murmuring, Network, RSS, Service, Social, Usenet, WWW | Tagged , , , , , , , , | Leave a comment

MongoDB 的 Index 種類

Percona 的人寫了一篇簡單的文章介紹 MongoDB 的 Index:「MongoDB Indexing Types: How, When and Where Should They Be Used?」。

官方文件的「Indexes」算清楚,不過有些地雷沒講,像是 Unique Indexes 只這樣說:

The unique property for an index causes MongoDB to reject duplicate values for the indexed field. Other than the unique constraint, unique indexes are functionally interchangeable with other MongoDB indexes.

但 Percona 的人就有說出「地雷」,算是不錯的補充教材 XDDD

Unique indexes work as in relational databases. They guarantee that the value doesn’t repeat and raise an error when we try to insert a duplicated value. Unique doesn’t work across shards.

話說前陣子聽到傳言抱怨,MongoDB 的文件是行銷 & 團隊寫出來的,一堆限制都沒寫在明顯的地方... XD

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直接接管整個 .io 的網域...

在「The .io Error – Taking Control of All .io Domains With a Targeted Registration」這邊看到的 XDDD

其實就是這樣:

;; AUTHORITY SECTION:
io.         172800  IN  NS  ns-a1.io.
io.         172800  IN  NS  ns-a2.io.
io.         172800  IN  NS  ns-a3.io.
io.         172800  IN  NS  ns-a4.io.
io.         172800  IN  NS  a0.nic.io.
io.         172800  IN  NS  b0.nic.io.
io.         172800  IN  NS  c0.nic.io.

然後他就去註冊 ns-a{1,2,3,4}.io 了 XDDD

這很歡樂 XDDD

(應該可以來掃一下所有的 tld...)

Posted in Computer, DNS, Murmuring, Network, Security, Service | Tagged , , , , , , , | 2 Comments

BoringSSL 的 FIPS 140-2 驗證

看到由 Google 主導的 BoringSSL 有計劃將其中一塊申請 FIPS 140-2 的驗證計畫 (BoringCrypto 的部份):「FIPS 140-2」。

其中 FIPS 140-2 最有名的後門應該是 Dual_EC_DRBG (定義於 NIST SP 800-90A,被 FIPS 140-2 引用),所以特地講清楚他們選擇哪個演算法:

FIPS 140-2 requires that one of its PRNGs be used (which they call DRBGs). In BoringCrypto, we use CTR-DRBG with AES-256 exclusively and RAND_bytes (the primary interface for the rest of the system to get random data) takes its output from there.

而且還花了不少篇幅解釋 PRNG 的細節。

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AWS 的 Patch Manager 支援 Linux

在「Amazon EC2 Systems Manager Patch Manager now supports Linux」這邊 AWS 宣佈了 Patch Manager 支援 Linux 的消息。

目前支援的包括了:

  • Amazon Linux 2014.03 and later (2015.03 and later for 64-bit)
  • Ubuntu Server 16.04 LTS, 14.04 LTS, and 12.04 LTS
  • RHEL 6.5 and later (7.x and later for 64-Bit)

連已經超過 LTS 支援期的 Ubuntu 12.04 都支援了... 不過 CentOS 看起來沒順便支援?

可以設計一些規定 (與組織內規範相關的,像是 approval process) 讓 Patch Manager 決定要怎麼佈:

可以用這個直接處理安全性更新...

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在程式競賽得獎負面相關於工作的品質

2015 的文章以及演講,最近冒出來看到的。GooglePeter Norvig 提到了用 ML 的方式分析,發現程式競賽的成績與工作品質的負面相關性:「Being good at programming competitions correlates negatively with being good on the job」。

換句話說,程式競賽的成績反而是是個負面指標 (對於 Google 內的情況分析出來的,所以是基於 Google hiring process 的前提過濾過的)。

In this talk, Peter talked about how Google did machine learning and at one point he mentioned that at Google they also applied machine learning to hiring. He said that one thing that was surprising to him was that being a winner at programming contests was a negative factor for performing well on the job.

給了一些對原因的猜測:

Peter added that programming contest winners are used to cranking solutions out fast and that you performed better at the job if you were more reflective and went slowly and made sure things were right.

YouTube 的留言處也有一些猜測,像是:

What he's talking about is the fact that several extremely important parts of software engineering are not included in these contests, for example code reusability, maintainability, decomposition of the problem using the OO paradigm, etc. All of these make a good engineer, but are not necessarily needed in competitive programming contests.

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Google Chrome 對 WoSign 與 StartCom 的白名單要完全移除了

Twitter 上看到的:

WoSignStartCom 的移除會發生在 61 版,而依照「Final removal of trust in WoSign and StartCom Certificates」這邊的說明,stable 應該會在九月出 61 版而生效:

Based on the Chromium Development Calendar, this change should be visible in the Chrome Dev channel in the coming weeks, the Chrome Beta channel around late July 2017, and will be released to Stable around mid September 2017.

Posted in Browser, Computer, GoogleChrome, Murmuring, Network, Security, Service, Software, WWW | Tagged , , , , , , , , , , , | Leave a comment