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PHP 7.2 的效能改善

作者在「PHP 7.1 vs 7.2 Benchmarks (with Docker and Symfony Flex)」這邊拿 Symfony 測試 PHP 7.2 的效能,發現效能提昇主要來自於多個連線時的情境:

前面的數字是前端頁面 (用了 Twig),後面的數字是純 API 呼叫。都可以看出 conc = 1 時其實沒有顯著差異,但只要有多個連線同時存取時,效能的提昇就會展現出來。對於繁忙的站台感覺會有不少幫助...

作者的猜測是 opcache 模組的改善,也就是在這段提到的:

- Opcache:
  . Added global optimisation passes based on data flow analysis using Single
    Static Assignment (SSA) form: Sparse Conditional Constant Propagation (SCCP),
    Dead Code Elimination (DCE), and removal of unused local variables
    (Nikita, Dmitry)

Amazon Device Farm 支援讓使用者直接連上去 debug 了...

Amazon Device Farm 推出這樣的功能又朝著設備租賃服務更進一步了:「Amazon Device Farm Launches Direct Device Access for Private Devices」。

Now, with direct device access, mobile applications developers can use individual devices in their private test set as if they were directly connected to their local machine via USB. Developers can now test against a wide array of devices just like they would as if the devices were sitting on their desk.

這樣就可以使用更底層的東西了...

AWS WAF 支援 Regex (PCRE)

首先是 AWS WAF 支援 Regex 了:「AWS WAF Now Supports Regular Expressions (Regex)」。

而且是以 PCRE 版本為主:

AWS WAF supports most of the standard Perl Compatible Regular Expressions (PCRE).

這樣設定變得方便很多啊,大家都算熟 regex,而且也夠強大...

另外一個公告是 AWS WAF 可以將地區的當條件進行設定了:「AWS WAF Now Supports Geographic Match」。

除了針對某些地區擋掉或是開放以外,也可以針對不同地區設定 rate limit。當條件設定就是了...

YouTube 史上第一個破四十億次播放的影片:Despacito

前幾天 2017/10/11 達到了:「Luis Fonsi & Daddy Yankee's 'Despacito' Is First Clip to Hit 4 Billion Views on YouTube」。


出自「Gangnam Style (music_video)」這頁。

不到一年的時間 XD

依照這個速度,應該是下個月會破 UINT_MAX (4294967295)?當年 YouTube 的人有在 Google+ 上發了一則關於超過 INT_MAX 的 PR 稿 (不過後來刪除了):「Gangnam Style overflows INT_MAX, forces YouTube to go 64-bit」。

所以這次會發嗎?

CircleCI 的隱私問題

作者看 CircleCI 網站時發現的問題:「CircleCI trusts 8 analytics companies with your source code and API tokens」。

CircleCI 網站引用了這八個網站的 javascript:

  • Pusher
  • Intercom
  • Launch Darkly
  • Amplitude
  • Appcues
  • Quora (??)
  • elev.io
  • Optimizely

有些有很明顯目的而且也夠大,但有些就沒聽過了... 不過照 BuiltWith 上分析的資料「circleci.com Technology Profile」,遠超過這些啊 XDDD

可以看到 GitHub 站上只引用了 Facebook (不過這是哪邊出現的啊?),另外因為使用 Fastly 的 CDN 服務,所以 Fastly 也是屬於 GitHub 的信任名單;這兩家都算夠大的 vendor:「github.com Technology Profile」。

Travis CI 則是 Google Analytics 與 Fastly,也是兩家夠大的 vendor:「travis-ci.com Technology Profile」。

所以對於很注重這資安方面的人,應該還算是有選擇...

Linode 要推出「Linode Block Storage」了...

從「Linode Block Storage (Fremont beta)」這邊可以看到 Linode 推出 Block Storage 了,是 SSD-based,跟 Amazon EBS 的 gp2 也是 SSD-based 相同。

計價方式,價錢也相同,沒有 I/O fee:

They're affordable - $0.10 per GB (free during the beta) and no usage fees.

目前能從 1GB 開到 1TB:

How big of a Volume can I create?
Between 1 GB and 1024 GB for now. After the beta, the max volume size may be larger.

單台可以掛 8 個:

How many Volumes can I attach to a Linode at the same time?
Up to 8.

然後 2018 開始收費:

The beta is free through 2017. January 1, 2018 the meter starts running.

有了 Block Storage 後有些事情就比較好搭出來了,也不會受限於 local disk 的空間大小。

DHS 要求郵件系統都必須使用 STARTTLS、DMARC,並且全面禁用 RC4 與 3DES

Twitter 上看到 18F 貼了 DHS 的新規定:「Enhance Email and Web Security」。

郵件系統的部份,要求要有 STARTTLS,並且設定 SPFDMARC。另外禁用 SSLv2 SSLv3,以及 RC43DES

網站的部份,則是要求 HTTPS 以及 HSTS。另外也與郵件系統一樣禁用 SSLv2、SSLv3,以及 RC4 與 3DES。

不只 18F 一個單位在推動,這樣整體的速度才會加快...

中華的 DNS 架構

Twitter 上看到「HiNet DNS系統設備維護作業」這則維護公告,裡面提到了會對 HiNet DNS 系統維護,但範圍是雲林以南:

起訖日期:2017-10-19
時間: 14:00 ~ 16:00
範圍:雲林(含)以南
說明:親愛的HiNet客戶您好﹕ 為提昇網路服務品質,HiNet DNS系統將於106/10/19(星期四)下午2:00到4:00進行設備維護,期間DNS查詢服務將可能發生瞬斷情形,若影響上網服務造成您的不便,敬請見諒,並感謝您對HiNet的支持與愛護。 祝您 身體健康 萬事如意 中華電信數據通信分公司 敬上 客服專線:0800-080-412

這樣聽起來中華有在自己內部網路跑 anycast service 了?而且這樣應該表示有機會在 DNS 層拆出不同區域的用戶?

OnePlus OxygenOS 內建的 Malware

看到「OnePlus OxygenOS built-in analytics」這篇,講作者在聽連線時看到 OnePlus OxygenOS 內建的 Malware:

維基百科上的說明好像不怎麼意外啊:

一加(全稱:深圳市萬普拉斯科技有限公司,英語:OnePlus)是中國一家行動通訊終端裝置研製與軟體開發的企業,於2013年12月7日成立,主要開拓國外市場。

作者一開始看到各種行為,像是 screen_offscreen_onunlockabnormal_reboot

{
    "ty": 3,
    "dl": [
        {
            "id": "258cfeb1",
            "en": "screen_off",
            "ts": 1484177517017,
            "oed": [],
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, {
            "id": "258cfeb1",
            "en": "screen_on",
            "ts": 1484177826984,
            "oed": [],
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, {
            "id": "258cfeb1",
            "en": "unlock",
            "ts": 1484177827961,
            "oed": [],
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, {
            "id": "258cfeb1",
            "en": "abnormal_reboot",
            "ts": 1484178427035,
            "oed": [],
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, ...
    ]
}

然後是各種機器資訊,包括 MAC address、IMEI 之類的:

{
    "ty": 1,
    "dl": [
        {
            "ac": "",
            "av": "6.0.1",
            "bl": 82,
            "br": "OnePlus",
            "bs": "CHARGING",
            "co": "GB",
            "ga": 11511,
            "gc": 234,
            "ge": 6759424,
            "gn": 30,
            "iac": 1,
            "id": "258cfeb1",
            "im": "123456789012345,987654321098765",
            "imei1": "123456789012345",
            "it": 0,
            "la": "en",
            "log": "",
            "ma": "aa:bb:cc:dd:ee:ff",
            "mdmv": "1.06.160427",
            "mn": "ONE A2003",
            "nci": "23430,",
            "ncn": ",",
            "noi": "23430,",
            "non": "EE,",
            "not": "LTE,",
            "npc": "gb,",
            "npn": "07123456789,07987654321",
            "nwa": "aa:bb:cc:dd:ee:ff",
            "nwb": "ff:ee:dd:cc:bb:aa",
            "nwh": false,
            "nwl": 0,
            "nws": "\"CHRISDCMOORE\"",
            "ov": "Oxygen ONE A2003_24_161227",
            "pcba": "",
            "rh": 1920,
            "ro": false,
            "romv": "3.5.6",
            "rw": 1080,
            "sov": "A.27",
            "ts": 1484487017633,
            "tz": "GMT+0000"
        }
    ]
}

然後是開了什麼 app XDDD

{
    "ty": 4,
    "dl": [{
            "id": "258cfeb1",
            "pn": "com.Slack20003701",
            "pvc": "20003701",
            "tk": [
                [1484079940460, 1484079952177],
                [1484081525486, 1484081603191],
                [1484081603424, 1484081619211],
                ...
            ],
            "it": 0
        }, {
            "id": "258cfeb1",
            "pn": "com.microsoft.office.outlook170",
            "pvc": "170",
            "tk": [
                [1484084321735, 1484084333336],
                [1484084682578, 1484084683668],
                [1484084685843, 1484084688985],
                ...
            ],
            "it": 0
        }, ...
    ]
}

以及在 app 裡面做了什麼 XDDD (像是 ChromeTabbedActivity startRecentsActivity stopWifiSettingsActivity startSettings start)

{
    "ty": 2,
    "dl": [{
            "id": "258cfeb1",
            "pi": 12795,
            "si": "127951484342058637",
            "ts": 1484342058637,
            "pn": "com.android.chrome",
            "pvn": "55.0.2883.91",
            "pvc": 288309101,
            "cn": "ChromeTabbedActivity",
            "en": "start",
            "aed": [],
            "sa": true,
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, ... {
            "id": "258cfeb1",
            "pi": 4143,
            "si": "41431484342115589",
            "ts": 1484342115589,
            "pn": "com.android.systemui",
            "pvn": "1.1.0",
            "pvc": 0,
            "cn": "RecentsActivity",
            "en": "stop",
            "aed": [],
            "sa": true,
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, {
            "id": "258cfeb1",
            "pi": 26449,
            "si": "264491484342115620",
            "ts": 1484342115620,
            "pn": "com.android.settings",
            "pvn": "6.0.1",
            "pvc": 23,
            "cn": "WifiSettingsActivity",
            "en": "start",
            "aed": [],
            "sa": true,
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, ... {
            "id": "258cfeb1",
            "pi": 2608,
            "si": "26081484346421908",
            "ts": 1484346421908,
            "pn": "com.android.settings",
            "pvn": "6.0.1",
            "pvc": 23,
            "cn": "Settings",
            "en": "start",
            "aed": [],
            "sa": true,
            "it": 0,
            "rv": "OnePlus2Oxygen_14.A.27_GLO_027_1612271635"
        }, ...
    ]
}

有人提供了移除的方法:

但你可以不要買這個牌子啊 XDDD

Alphabet (Google) 的 Project Loon 拿到授權,支援波多黎各的救災計畫

Project LoonAlphabet (Google 的母公司) 透過熱氣球建立網路的計畫。

這次波多黎各災後已經好幾個禮拜了,但還是有大量的基地台還是不通。於是 Project Loon 從 FCC 得到實驗性的執照,建立行動網路:「Alphabet’s Internet balloons will try to restore cell service in Puerto Rico」。

Nearly 82 percent of cell sites in Puerto Rico and 57 percent in the US Virgin Islands are out of service, the FCC said in its daily damage report yesterday. In nearly all counties in Puerto Rico, more than 75 percent of cell sites are not working, and "22 out of the 78 counties in Puerto Rico have 100 percent of their cell sites out of service." Large percentages of residents are also without cable or wireline service.

在 FCC 的公告裡提到授權了 900Mhz 頻段:「FCC GRANTS EXPERIMENTAL LICENSE FOR PROJECT LOON TO OPERATE IN PUERTO RICO」(PDF 檔但是標題是「Microsoft Word」...)。

Project Loon obtained consent agreements to use land mobile radio (LMR) radio spectrum in the 900 MHz band from existing carriers operating within Puerto Rico.

不過由於要讓使用者可以使用現有的 SIM 卡連上網,需要當地電信業者的合作,Google 目前還沒完全確認:

Alphabet hasn't announced a schedule for providing service in Puerto Rico, and the company says it is still determining whether it will be able to help.

Project Loon must be integrated with the network of a cellular company in order to provide service, and Alphabet is “making solid progress on this next step," the spokesperson said. Project Loon is part of Alphabet's X division, formerly known as "Google X."

是一戰成名的機會...

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