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Thu Dec 17 10:20:49 HKT 2020



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Sun Jan 10 21:32:11 HKT 2021 From /weblog/trip/travelling

Europe


Europe at autumn - http://cn.wsj.com/big5/20130926/lif080725.asp?source=rss

Coldest city! - http://www.damncoolpictures.com[..]tsk-in-russia-coldest-city-in-world.html

fascinating-facts-about-modern-greece - http://list25.com[..]ting-facts-about-modern-greece/?view=all

things-that-will-make-you-want-to-visit-greenland - http://list25.com[..]ke-you-want-to-visit-greenland/?view=all

If you've never been to Norway, this is what you've been missing out on. - http://www.damncoolpictures.com[..]yone-needs-to-visit-norway-at-least.html

Great church - http://list25.com/25-great-church-buildings-challenge/?view=all

Tips - http://bikethemoment.com/traveltips/

「世界最美海灘」的Navagio - http://hk.apple.nextmedia.com[..]realtime/international/20140709/52671530

【夏日芬蘭】落水玩漂浮 氹氹轉望藍天 - http://hk.apple.nextmedia.com[..]om/realtime/supplement/20140624/52619256

芬蘭的隱世桃源-在千湖之國尋找傳說中的姆明谷 - https://thestandnews.com/international/芬蘭的隱世桃源-在千湖之國尋找傳說中的姆明谷/

ALPS - http://list25.com[..]ns-you-should-definitely-visit-the-alps/

european-places-so-beautiful-you-might-cry - http://list25.com[..]ces-so-beautiful-you-might-cry/?view=all

In the mountains of the Czech Republic lies a 55 meter observation deck with a gigantic slide. Franek Company Architects built the slide in collaboration with Taros Nova and it stands at 1116 meters above sea level. - http://www.damncoolpictures.com[..]-czech-republic-has-giant-slide-and.html

canary-islands - http://list25.com[..]-should-be-on-your-bucket-list/?view=all

Parthenon at Greek - http://list25.com[..]ting-facts-about-the-parthenon/?view=all

Alps - http://global.britannica.com/place/Transylvanian-Alps

prague - http://list25.com[..]ng-in-prague-is-not-a-bad-idea/?view=all

【托斯卡尼】Arezzo 阿雷佐・踏進電影《美麗人生》的山城場景 - http://travelwithmice.blogspot.hk/2016/06/arezzo.html

exotic-places-in-eastern-europe - http://list25.com[..]ces-in-eastern-europe-you-have-to-visit/

西伯利亞鐵路 2017, Travel to Russia with Train - https://www.csleung4.com[..]%259E%25E9%2590%25B5%25E8%25B7%25AF-2017

巴爾幹半島路線圖 - 實用篇 - http://backpackersopoor.blogspot.hk/2016/07/blog-post_18.html

巴爾幹醉人風景 - http://backpackersopoor.blogspot.com/2015/08/blog-post.html

Best Fall Destinations To Visit in Europe - http://frame.bloglovin.com[..]5826429103&blog=12905715&frame_type=none

HIKING UP TO HIDDEN URSA BEACH – PORTUGAL - http://frame.bloglovin.com[..]5835773213&blog=11713667&frame_type=none

博物館化之斯德哥爾摩 - https://thestandnews.com/art/博物館化之斯德哥爾摩/

croatia - https://list25.com[..]s-about-croatia-you-probably-didnt-know/

絕代佳麗波圖 遺世之美耐人尋味 - https://dq.yam.com/post.php?id=9806

astounding-fairytale-like-european-castles-and-chateaus - http://list25.com[..]-european-castles-and-chateaus/?view=all

漫遊保加利亞 - 出發前資訊總匯集 - https://medium.com[..]%E7%B8%BD%E5%8C%AF%E9%9B%86-14f4fabfa389

This clifftop monastery is surprisingly accessible - https://www.nationalgeographic.com[..]ore-clifftop-monasteries-meteora-greece/

Denmarks 300-year-old-homes-of-the-future - http://www.bbc.com[..]enmarks-300-year-old-homes-of-the-future

Discover the secrets of London’s oldest Roman road - https://www.nationalgeographic.com[..]e-secrets-of-the-citys-oldest-roman-road

The Wadden Sea - https://www.holland.com[..]/destinations/regions/wadden-islands.htm

(google search) (amazon search)



Sat Jan 09 16:23:31 HKT 2021 From /weblog/science/animal

anient


四川現遠古生物「仙女蝦」 幼卵無懼100℃滾水 - http://hk.apple.nextmedia.com/realtime/china/20140707/52665712

extinct-animals-that-scientists-want-to-de-extinct - http://list25.com[..]-scientists-want-to-de-extinct/?view=all

dinosaurs - http://list25.com[..]u-might-need-to-stop-believing/?view=all http://list25.com[..]acts-you-might-not-know-about-dinosaurs/

extinct-animals - http://list25.com[..]ls-that-we-are-sad-to-see-gone/?view=all

fossils - http://list25.com[..]izarre-fossils-ever-discovered/?view=all

Big frog - http://www.zmescience.com[..]als-ecology/ancient-pacman-frog-0423432/

https://list25.com[..]sea-monsters-that-once-ruled-the-oceans/

https://www.zmescience.com[..]ience/10-weirdest-prehistoric-creatures/

【蛛蠍混合體?】1億年歷史琥珀 藏新品種長尾蜘蛛 - https://hk.news.appledaily.com[..]ional/realtime/article/20180206/57797446

https://www.zmescience.com[..]ce/saber-toothed-cat-about-facts-0943284

neanderthals - https://www.bbc.com[..]00128-how-did-the-last-neanderthals-live

一頭挑食的結節龍 最後的晚餐吃什麼? - https://dq.yam.com/post.php?id=12605

Great Auk - https://www.zmescience.com/other/pieces/great-auk-extinct-tragic/

https://www.nationalgeographic.com[..]19/09/dinosaur-fossils-collector-feature

Pterosaurs constantly evolved into better fliers until their extinction - https://www.zmescience.com[..]anatomy/pterosaur-flight-evolution-0523/

New research explains why crocodiles are relatively unchanged since dinosaur times - https://www.zmescience.com[..]cience/why-crocodiles-survived-08012021/

(google search) (amazon search)


Wed Jan 06 20:49:46 HKT 2021 From /weblog/java/string

construction


Java's String.repeat Method in Action: Building PreparedStatement with Dynamic Number of Parameters - https://marxsoftware.blogspot.com[..]k11-string-repeat-preparedstatement.html

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Wed Jan 06 20:29:12 HKT 2021 From /weblog/health

eye


眼睛揭示的健康問題 - http://cn.wsj.com/big5/20120824/hea072218.asp?source=rss

視網膜撕裂 — 激光修補 - https://thestandnews.com[..]82-%E6%BF%80%E5%85%89%E4%BF%AE%E8%A3%9C/

The reality is that, unless you have a degenerative problem that needs to be treated by an ophthalmologist, there is no reason to try to naturally improve your eyesight, and there is not much any lens can do in this regard (unless we’re talking about children). You can put in the effort, but it is unlikely to help. Think about whether you really need to see any better than you currently do, considering you have glasses to fix the issue.
Progressive lenses can help you switch more comfortably from far to close distance. Your eyesight won’t magically improve, but that should never be your expectation when choosing glasses. - https://www.zmescience.com[..]-progressives-lenses-good-for-your-eyes/

(google search) (amazon search)


Wed Jan 06 20:26:28 HKT 2021 From /weblog/health/food

milk


Milk Mysteries: What’s in Your Glass? - https://www.webmd.com/diet/ss/slideshow-what-milk-to-drink

(google search) (amazon search)


Wed Jan 06 20:22:50 HKT 2021 From /weblog/trip/camping

tips


http://list25.com[..]ng-hacks-that-are-truly-genius/?view=all

8字結 - http://www.ropelab.com.au/figure-8-descenders/

Few other knots that are useful - https://www.gotoclimb.com/how-to-tie-climbing-knots/

http://list25.com[..]ke-your-weekend-more-enjoyable/?view=all

【防蚊香包】
材料:小茴香、艾葉、白芷、薄荷、石菖蒲、藿香各10克
做法:將所有材料混合均勻,放在紗布袋內,可隨身攜帶或放在多蚊處驅蚊
*孕婦及皮膚敏感人士忌用

【止痕外洗方】
材料:地膚子、土茯苓、白蘚皮、紫草各20克
做法:將材料連同5碗水,用中火煲30分鐘,待暖後外洗患處
*孕婦及皮膚敏感人士忌用
http://hk.apple.nextmedia.com/realtime/news/20160520/55106709

https://www.outsideonline.com/2217271/20-lost-arts-outdoors

How to Start a Fire, Plus 15 Other Outdoor Skills That Aren’t Complicated - https://getpocket.com[..]r-outdoor-skills-that-aren-t-complicated

(google search) (amazon search)


Fri Jan 01 08:12:37 HKT 2021 From /weblog/software_engineering/SCM

Best Practice


Article for SCM - http://www.infoq.com/articles/agile-version-control#q13

In my opinions, everything except machine generated should be in SCM... How about you? - http://www.theserverside.com[..]d.tss?thread_id=41260&ASRC=EM_NNL_347801

Check In Early, Check In Often - http://www.codinghorror.com/blog/archives/001165.html

Comparison of difference SCM, a bit subjective, still good as basic overview of feature and comparison - http://lucas-ward.blogspot.com[..]urity-model-for-source-control-scmm.html

https://copyconstruct.medium.com/post-commit-reviews-b4cc2163ac7a

(google search) (amazon search)


Thu Dec 31 11:18:48 HKT 2020 From /weblog/health/food

Health Meal


https://www.bbc.com[..]e/20180126-the-100-most-nutritious-foods

food boost immune - https://www.webmd.com/cold-and-flu/ss/slideshow-immune-foods

Again, should eat difference food - https://www.bbc.com[..]205-how-to-eat-your-way-to-a-healthy-gut

Turmeric - https://www.webmd.com/diet/ss/slideshow-turmeric

https://www.zmescience.com[..]/science/top-diets-year-ranked-explained

Fix muscle with good food - https://www.mr-sport.com.tw[..]life/food/fix-your-muscle-with-food.html

要動不要痛—調整飲食,擊退運動傷害! - https://www.mr-sport.com.tw[..]eat-when-you-get-hurt-from-exercise.html

【動畫●每日健康】新超級食物苔麩代替麵粉 多吃腸胃更暢通 - http://hk.apple.nextmedia.com[..]om/realtime/supplement/20161012/55761307

http://list25.com[..]at-makes-eating-healthier-easy/?view=all

豐富健康食譜 - http://www.yimho.com/2086.html

Eating for health, not weight - http://www.nytimes.com[..]y/the-optimal-diet.html?_r=2&ref=opinion

健康飲食還需多吃“苦” - http://cn.wsj.com/big5/20120607/lif075953.asp?source=rss

我續說︰「我建議你一個兩天的開心全餐,希望對囡囡有幫助。第一天早餐有全麥多士及低脂乳酪1杯;午餐有瘦肉粥、灼芥蘭、香蕉1條;小食有小魚乾;晚餐洋葱炒肉片、白飯、藍莓一杯。第二天早餐番茄芝士三文治及脫脂奶1盒;午餐有三文魚壽司、綠茶及奇異果1個;小食有香蕉乾;晚餐有白飯、西芹炒雞丁及木瓜半個。」- http://www.yimho.com/1450.html

1.【 想要膽固醇聽話? 每天三杯柳橙汁OK!! < http://www.sjps.kh.edu.tw/grace/home/01.htm >】

2.【 要長壽別忘蕃茄 < http://www.sjps.kh.edu.tw/grace/home/02.htm >】

3.【 喝杯水再睡_喝適量的水有益健康! < http://www.sjps.kh.edu.tw/grace/home/03.htm >】

4.【 喝下重覆煮沸的開水會致癌 < http://www.sjps.kh.edu.tw/grace/home/04.htm >】

5.【 喜歡吃冷凍水餃的人請小心 < http://www.sjps.kh.edu.tw/grace/home/05.htm >】

6.【 小心衛生筷子 < http://www.sjps.kh.edu.tw/grace/home/06.htm >】

7.【 豆漿, 請多告訴你身旁的女性朋友 < http://www.sjps.kh.edu.tw/grace/home/07.htm >】

8.【 操作電腦時要多喝茶 < http://www.sjps.kh.edu.tw/grace/home/08.htm >】

9.【 老醫之家:一個不錯的中文醫療資訊網站 < http://www.sjps.kh.edu.tw/grace/home/09.htm >】

10.【 建議大家最近別吃生魚片及去海邊玩! < http://www.sjps.kh.edu.tw/grace/home/10.htm >】

11.【 養肺的季節--養肺食譜 < http://www.sjps.kh.edu.tw/grace/home/11.htm >】

12.【 聽過喝咖啡減肥? < http://www.sjps.kh.edu.tw/grace/home/12.htm >】

13.【 幫助皮膚健康的維生素 < http://www.sjps.kh.edu.tw/grace/home/13.htm >】

14.【 造成身材浮腫的殺手食物報告出爐 < http://www.sjps.kh.edu.tw/grace/home/14.htm >】

15.【 喝雞湯 細菌黏液最快排出 < http://www.sjps.kh.edu.tw/grace/home/15.htm >】

16.【 15種吃了腿會變瘦、變美的食物 < http://www.sjps.kh.edu.tw/grace/home/16.htm >】

17.【 早餐吃熱食,才能保護胃氣 < http://www.sjps.kh.edu.tw/grace/home/17.htm >】

18.【 五種食物,讓你百毒不侵 < http://www.sjps.kh.edu.tw/grace/home/18.htm >】

19.【 不要太常吃冰 < http://www.sjps.kh.edu.tw/grace/home/19.htm >】

20.【 喝太多鋁箔包飲料容易導致老年癡呆症 < http://www.sjps.kh.edu.tw/grace/home/20.htm >】

21.【 黑糖薑茶(女人一定要看) < http://www.sjps.kh.edu.tw/grace/home/21.htm >】



健康生活篇

1.【 午餐後趴睡是健康的殺手 < http://www.sjps.kh.edu.tw/grace/home/午睡是健康的殺手.htm >】

2.【 失眠、生物電和橡皮鞋底! < http://www.sjps.kh.edu.tw/grace/home/B02.htm >】

3.【 有午睡習慣的人比較不會老 < http://www.sjps.kh.edu.tw/grace/home/B03.htm >】

4.【 睡眠不足 小心變笨 < http://www.sjps.kh.edu.tw/grace/home/B04.htm >】

5.【 深夜開燈睡易致癌 < http://www.sjps.kh.edu.tw/grace/home/b05.htm >】

6.【 用微波爐加熱水請小心 < http://www.sjps.kh.edu.tw/grace/home/b06.htm >】

7.【 杜絕感冒的六大法則 < http://www.sjps.kh.edu.tw/grace/home/b07.htm >】

8.【 每天更健康 < http://www.sjps.kh.edu.tw/grace/home/b08.htm >】

9.【 小心!看不見的「波」可能讓你致癌 < http://www.sjps.kh.edu.tw/grace/home/b09.htm >】


蒜頭飯 - 閱後傳知他人,添福添壽

一位朋友每天吃蒜頭蒸飯,晚餐用一把蒜頭切碎煮飯, 半年之後高血壓消失了,痛風症消失了,坐骨神經痛亦消失了。 對於目前流行的非典型肺炎,他認為吃蒜頭是增強免疫力的方法, 因為蒜頭是「窮人靈芝」,通血管及清除毒素,以前美軍 亦用作隨身解毒劑。

蒜頭炒飯:
蒜頭越多越香,拍碎,用油鍋炒香蒜頭放入鹽及煮好的飯,加葫 椒鹽拌炒起鍋。 ( 菲律賓人的早餐都是這道主食 )

蛋炒飯,起鍋前撒上一些蒜粉,保證您炒的不夠吃,太香太好吃了。

另一位朋友提醒要多食維他命 C,以增強抵抗力,並切忌吃煎炸熱氣食物,免引致喉嚨發
炎,病毒就由此攻入。

薑湯做法:
1. 約十公克的薑磨成糊狀。
2. 把薑糊放入玻璃杯裡。
3. 注入滾燙的熱開水。
4. 加入一匙蜂蜜,拌勻後飲用。

男女老少都適合飲用。
老薑切片或拍碎煮黑糖功效一樣 , 連續喝兩個月(每天早晚各喝一次 )據書本 記載的見證:
1. 身體變溫暖,手腳冰冷的『怕冷症』體質明顯改善。
2. 體重可減輕約十公斤。
3. 皮膚變得細嫩。
4. 去掉多餘贅肉,腰圍變細。

薑對身體很有益處,愛美又想要健康的人,不妨試試看吧!
祝身體健康!

熱門瘦身食譜排行榜Top5 - http://forward.hkwebs.net/archives/7721

冬天多吃莓果養顏排毒又減肥 (strawberry) - http://forward.hkwebs.net/archives/7818

長期食素加速衰老 - http://forward.hkwebs.net/archives/7816

Food good for slim and skin - http://forward.hkwebs.net/archives/7912

10 good food... - http://forward.hkwebs.net/archives/8043

Food to help hair - http://www.yimho.com/1425.html

地中海膳食模式——一种富于水果、蔬菜、坚果、全谷物和富含不饱和脂肪酸的鱼类的膳食, 食用三文鱼, 水果,击退中风, 放下苏打,端起咖啡, 酒精:始终都要节制, 巧克力——更多时候依然视为氧化剂, 什么不能吃:限制碳水化合物, 红肉 - http://neuro.dxy.cn/article/45615

日日食花生 更健康更長命 - http://thehousenews.com[..]%A5%E5%BA%B7%E6%9B%B4%E9%95%B7%E5%91%BD/

busy-students-eat-healthier - http://list25.com[..]lp-busy-students-eat-healthier/?view=all

breast-feeding-diet - https://www.webmd.com/parenting/baby/breast-feeding-diet

(google search) (amazon search)


Wed Dec 30 20:49:03 HKT 2020 From /weblog/java/concurrency

Thread


An API to get the state of a thread, but someone say it is not reliable - http://java.sun.com[..]5.0/docs/api/java/lang/Thread.State.html http://java.silke-wingens.de/2011/03/13/threads-states/?lang=en

http://www.nabble.com[..]readed-programs-tf3627394.html#a10128844

Having said that, I have to note that using Thread#getState() is not
something you can absolutely rely on as the behavior isn't guaranteed
to be the same on all platforms. That is, it can be a useful tool for
debugging and test-driving but not ideal for regression (unit)
testing.

Overview of Java thread - http://java67.blogspot.hk[..]t-thread-and-javalangthread-in-java.html

Loom - https://webtide.com/do-looms-claims-stack-up-part-1/ https://webtide.com/do-looms-claims-stack-up-part-2/

(google search) (amazon search)


Tue Dec 29 22:18:24 HKT 2020 From /weblog/security

password


Make sure all your passwords are 12 characters or more, Use bcrypt or PBKDF2 exclusively to hash anything you need to be secure. - http://www.codinghorror.com/blog/2012/04/speed-hashing.html

Password is only worked for one time - http://www.mobileread.com/forums/showthread.php?threadid=6462

crack captcha - http://sam.zoy.org/pwntcha/

Java password mask - http://java.sun.com[..]er/technicalArticles/Security/pwordmask/

OpenID resource - http://openid.net/ http://www.arachna.com[..]ge/spidaman/20070225#the_openid_snowball http://developers.sun.com/identity/ http://www.theserverside.com[..]_id=46569&asrc=EM_NLN_2030603&uid=703565

OpenID explain - http://ravichodavarapu.blogspot.com/2007/06/what-is-openid.html

A technique that crack winxp password at 3 min - http://www.infoq.com/news/2007/09/rainbowtables

Using image as password - http://dsc.discovery.com/news/briefs/20060306/password_tec.html

The other interesting idea, Evolving Password - http://www.docuverse.com[..]uid=79730e53-1d30-47ae-98e8-abb55201429b

Passphrase Evangelism - http://www.codinghorror.com/blog/archives/000360.html

Rainbow Hash Cracking - http://www.codinghorror.com/blog/archives/000949.html , add salt (token) to prevent it - http://blog.cfelde.com/2011/04/hashing-passwords/

How to make password harder to be guessed, but I guess there should be simple way to guess "this is fun", other than take 2537 years? - http://www.baekdal.com/tips/password-security-usability

Discussion about if some old suggested rules about still valid or not - http://queue.acm.org/detail.cfm?id=2422416&ref=fullrss

Using quantum for password? - https://www.inside.com.tw/2017/03/01/quantum-key-distribution

Salted Password Hashing - Doing it Right - https://crackstation.net/hashing-security.htm http://www.infoq.com[..]w-to-encrypt-the-user-password-correctly

It sound like outsource is better - https://blog.plan99.net/building-account-systems-f790bf5fdbe0

Hash explained - https://dev.to[..]-passwords-in-your-next-application-4e2f

(google search) (amazon search)


Tue Dec 29 22:03:33 HKT 2020 From /weblog/unix

monitoring


Using unhide to check hidden process - http://www.ubuntugeek.com[..]unhide-the-opensource-forensic-tool.html

fuser, check which user using the file or directory - http://www.thegeekstuff.com/2012/02/linux-fuser-command/

htop, look much better than top - http://nerds-central.blogspot.com[..]ght-no-i-am-loving-htop-it-is-linux.html http://www.thegeekstuff.com/2011/09/linux-htop-examples

Tutorial of both lsof and pstack - http://myhowto.org[..]ternals-with-lsof-and-strace/#strace_run

Tutorial of SAR - http://www.thegeekstuff.com/2011/03/sar-examples . In Solaris, you can check SAR from previous days using "sar -f /var/adm/sa/sa30 " ( last 30th )

If we like to see the detail from "ps" command:
solaris: /usr/ucb/ps -awwx , or, use pargs, but need sudo to that user - http://javarevisited.blogspot.com.au[..]ow-long-argument-of-running-process.html
linux: ps -aef --cols [XXXX]

prstat - use prstat instead of ps in solaris http://developers.sun.com/solaris/articles/prstat.html
How to check physical memory on solaris? /usr/sbin/prtconf | grep Memory http://www.dbapool.com/faqs/Q_116.html

Other forensics tools - http://www.forensicfocus.com[..]om/computer-forensics-software-intro.php

Sun monitoring tools collections - http://blogs.sun.com[..]try/solaris_performance_monitoring_tools http://tech.varghees.com[..]sed-system-monitoring-commands-in-linux/

time, basic unix util - http://www.thegeekstuff.com/2013/10/time-command-format

http://www.baptiste-wicht.com[..]ow-level-discovery-cores-cpus-hard-disk/

10 commands for system monitoring - http://techblog.netflix.com[..]1/linux-performance-analysis-in-60s.html http://www.infoq.com/cn/news/2015/12/linux-performance

https://linuxcommando.blogspot.com[..]nxi-swiss-army-knife-for-displaying.html

Top explain - https://dzone.com/articles/different-cpu-times-unixlinux-top

(google search) (amazon search)


Fri Dec 25 22:15:53 HKT 2020 From /weblog/design

performance


http://highscalability.com[..]6/big-list-of-20-common-bottlenecks.html

Nothing specific, mostly code clean up, refactoring and simplification, the performance boost was a surprise. <- This is a good one - http://bad-concurrency.blogspot.com.au[..]12/07/disruptor-v3-faster-hopefully.html

Is there anything we can do about this when designing algorithms and data-structures? Yes there is a lot we can do. If we perform chunks of work on data that is co-located, and we stride around memory in a predictable fashion, then our algorithms can be many times faster. For example rather than using bucket and chain hash tables, like in the JDK, we can employ hash tables using open-addressing with linear-probing. Rather than using linked-lists or trees with single items in each node, we can store an array of many items in each node. - http://mechanical-sympathy.blogspot.com.au[..]emory-access-patterns-are-important.html

Skip lists are used instead of b-trees because b-trees don’t scale. - http://highscalability.com[..]ast-mvcc-inmem-lockfree-codegen-and.html

Beware about the performance issue of static initalization - http://stackoverflow.com[..]-cause-problems-with-multi-threading-how

Experiment show why arraylist is better in most cases - http://www.javaadvent.com/2013/12/arraylist-vs-linkedlist.html

How to design low latency application in java - http://vanillajava.blogspot.com.au[..]5/chronicle-and-low-latency-in-java.html

http://highscalability.com[..]ciples-of-high-performance-programs.html http://blog.libtorrent.org[..]principles-of-high-performance-programs/

Suggestion about how to determine number of thread pool - http://venkateshcm.com[..]rmine-Web-Applications-Thread-Poll-Size/

Beware the performance penalty of logging - https://plumbr.eu/blog/locking-and-logging

Keep thing dynamic - http://highscalability.com[..]ciples-of-high-performance-programs.html

http://www.rationaljava.com[..]st-rule-of-performance-optimisation.html

http://www.eecs.berkeley.edu[..]u/~rcs/research/interactive_latency.html

http://highscalability.com[..]aling-data-platforms.html?SSLoginOk=true

Discuss about developing low latency financial application - http://queue.acm.org/detail.cfm?ref=rss&id=2770868

Discussion of object pooling - http://highscalability.com[..]-but-forgotten-trick-object-pooling.html http://coffeenco.de[..]m_performance_part_1_object_pooling.html

Efficiency - the amount of work you need to do.
Performance - how fast you can do that work
Efficiency - governed by your algorithm
Performance - governed by your data structures.
http://www.rationaljava.com[..]e-difference-between-efficiency-and.html


Turning off power save mode on the CPU reduced brought the max latency from 11 msec down to 8 msec.
Guaranteeing threads will always have CPU resources using CPU isolation and thread affinity brought the maximum latency down to 14 microseconds.
http://highscalability.com[..]eduler-jitter-using-cpu-isolation-a.html
http://epickrram.blogspot.co.uk[..]o.uk/2015/09/reducing-system-jitter.html

About design for performance for webapi - http://tech.forter.com[..]y-decision-as-a-service-design-patterns/

check list - http://techbeacon.com[..]ery-software-development-team-should-ask

Beware if system utilization over 80% - http://www.infoq.com/cn/news/2016/02/utilisation-wait-latency http://robharrop.github.io[..]/20/service-latency-and-utilisation.html

scalable-io-events-vs-multithreading-based - https://thetechsolo.wordpress.com[..]lable-io-events-vs-multithreading-based/

How to find out bottleneck - https://vanilla-java.github.io[..]entile-latencies-in-Chronicle-Queue.html

https://www.inkandswitch.com/slow-software.html

Compiler Performance and LLVM - http://pling.jondgoodwin.com/post/compiler-performance/

Know Thy Complexities! - https://www.bigocheatsheet.com[..]oW9D2qyCTt3qMftzYxsdz7KJs8LkSeRPWLzguwpA

10 大高性能开发宝石 - https://xie.infoq.cn/article/a0d418bf29915ecad5d5eeab0

How to detect and fix IO related performance issue - https://blog.ycrash.io/2020/11/28/i-o-waiting-cpu-time-wa-in-top/

(google search) (amazon search)


Fri Dec 25 12:40:57 HKT 2020 From /weblog/software_engineering/SCM

git


Suggestful github project - http://rdegges.com/successful-github-development

GIT to SVN command guide - http://www.javacodegeeks.com[..]vs-svn-commandline-syntax-reference.html

pretty cool guide - http://martin.elwin.com[..]e-to-an-ioke-dev-env-from-source-part-1/ http://www.ralfebert.de/tutorials/git/ http://www.drdobbs.com[..]rticleId=240160261&siteSectionName=tools http://www.drdobbs.com[..]&siteSectionName=architecture-and-design

Some comments about possible issues - http://www.ericsink.com/entries/git_index.html

http://www.developer.com[..]an-streamline-your-writing-projects.html

Several ppl blog about why GIT better than SVN - http://inancgumus.com[..]tages-of-git-over-subversion-svn-a-brief http://altdevblogaday.org[..]03/09/its-time-to-stop-using-subversion/ http://blog.ashodnakashian.com/2011/06/git-for-personal-projects/

A suggested branching model - http://nvie.com/posts/a-successful-git-branching-model/

Some advantage of GIT over Mercurial - http://blog.extracheese.org[..]hy-i-switched-to-git-from-mercurial.html

#undo last commit
git reset HEAD^

#show files in a given commit
git show --pretty="format:" --name-only rev_number

#remove untracked files and directories
git clean -f -d

#track remote branch
git branch --track branch_name origin/master

# given you created a new local branch 'branch_name'
# pushes 'branch_name' to 'origin/branch_name', creating the remote branch for you
git push origin branch_name

#delete remote branch
git push origin :remote_branch_name

From http://leonardoborges.com[..]ngs/2011/05/29/a-few-useful-git-commands

Some more suggested workflow - http://eclipsesource.com/blogs/2011/06/09/git-lessons-learned/ http://sandofsky.com/blog/git-workflow.html

Move from SVN, experience of JIRA - http://www.drdobbs.com[..]from-subversion-to-git-and-the/240009175 http://blogs.atlassian.com/2013/10/git-workflows-webinar-qa

Merge or Rebase? http://blogs.atlassian.com[..]13/10/git-team-workflows-merge-or-rebase

http://www.javaworld.com[..]ntial-tips-for-git-and-github-users.html

change-default-git-commit-message-template - http://blog.ajduke.in[..]nge-default-git-commit-message-template/

https://codewords.recurse.com/issues/two/git-from-the-inside-out

Git cheat list - https://gist.github.com/aleksey-bykov/1273f4982c317c92d532

https://examples.javacodegeeks.com[..]re-development/git/git-commands-tutorial

https://dev.to/hector6872/how-good-are-git-hooks-14ho

https://medium.freecodecamp.org[..]nds-in-less-than-10-minutes-c53922625a73

https://medium.com[..]ployment-for-non-developers-7811dcf508bb

(google search) (amazon search)


Fri Dec 25 12:40:16 HKT 2020 From /weblog/health

sleep


Are we really need 8 hours of sleep? http://www.bbc.co.uk/news/magazine-16964783

Find the best sleep position - http://cn.wsj.com/big5/20130208/PHO221844.asp http://cn.wsj.com/big5/20130208/hea083626.asp

Take a nap is good! - http://cn.wsj.com/big5/20130917/ATG133550.asp

Why it is good to sleep together - http://cn.wsj.com/big5/20131107/hea080252.asp

中老年人怎樣睡個好覺? - http://cn.wsj.com/big5/20140325/hea120959.asp

Facts about sleep - http://www.damncoolpictures.com[..]nsane-facts-about-sleep-infographic.html

關注男士健康 側身睡覺有利養肝 - http://www.healthcare-kingdom.com[..]6%BA%E6%9C%89%E5%88%A9%E9%A4%8A%E8%82%9D

We all know that kind of situation very well. You are supposed to work or study but you cannot help dosing off. Sometimes, staying awake can be a real challenge; especially if you are tired or bored. Fortunately, there is a surprisingly wide range of various tricks and hacks to help you fight the annoying drowsiness. Here are 25 Ways To Stay Awake When All You Want To Do Is Sleep. - http://list25.com[..]-awake-when-all-you-want-to-do-is-sleep/

At least 7 hours sleep.... - http://www.mr-sport.com.tw[..]-health-life/news/sleep-or-exercise.html

http://list25.com[..]ch-might-help-you-sleep-better/?view=all

http://list25.com[..]-sleep-you-probably-didnt-know/?view=all

http://super-memory.com/articles/sleep.htm

about-sleep-paralysis - http://list25.com[..]p-paralysis-that-make-it-scary/?view=all

Power nap - https://www.nytimes.com[..]ke-naps-at-work-apologize-to-no-one.html

http://www.zmescience.com/medicine/why-you-feel-cold-always-0232

The shorter your sleep, the shorter your life: the new sleep science - https://www.theguardian.com[..]-worst-enemy-matthew-walker-why-we-sleep http://www.chicagotribune.com[..]we-sleep-matt-walker-20171003-story.html

https://journal.thriveglobal.com[..]com/jeff-bezos-sleep-amazon-19c617c59daa

http://www.npr.org[..]king-through-life-in-an-underslept-state

How to take nap - http://cn.wsj.com/big5/20171024/LIF172127.asp?source=rss

10 things to know about sleep as the clocks go back - http://www.bbc.com/news/health-41666563

https://www.zmescience.com[..]-deprivation-anxiety-depression-08012017

Do and Don't after sleep bad night - https://www.webmd.com[..]p-disorders/ss/slideshow-sleep-bad-night
https://www.webmd.com[..]ders/ss/slideshow-natural-sleep-remedies
https://www.webmd.com/sleep-disorders/ss/slideshow-sleep-foods

https://list25.com/25-crazy-facts-about-sleep/

Naps help us process information we subconsciously acquire during the day - https://www.zmescience.com[..]nce/short-subconscious-information-9543/

https://www.zmescience.com[..]nce/sleep-brainwave-reactivation-9236363

Only sleep and sex at bed - https://getpocket.com/explore/item/how-i-finally-learned-to-sleep

https://www.zmescience.com[..]/science/sleep-exam-results-mit-1342424/

https://www.webmd.com[..]science-19/biology/interact-sleep-cycles

10 Foods That Fight Pain - https://www.webmd.com[..]management/ss/slideshow-foods-fight-pain

https://www.mattressnerd.com/polyphasic-sleep/natural-sleep-aids/

Sleep jerks - https://elemental.medium.com[..]-while-you-drift-into-sleep-88f8d28d643a

(google search) (amazon search)


Fri Dec 25 11:28:30 HKT 2020 From /weblog/languages

smalltalk


Free tutorial - http://www.iam.unibe.ch/~ducasse/FreeBooks.html http://squeak.preeminent.org/tut2007/html/index.html

History - http://users.ipa.net[..]/design_principles_behind_smalltalk.html

Smalltalk Zoo - https://medium.com[..]troducing-the-smalltalk-zoo-25b64ebeb642

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Fri Dec 25 11:26:31 HKT 2020 From /weblog/health/food

herb


Peppermint - https://www.webmd.com[..]/ss/slideshow-health-benefits-peppermint

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Thu Dec 24 08:49:03 HKT 2020 From /weblog/languages/c

misc


The long past of C, how standard growth in C - http://esr.ibiblio.org/?p=4304

The state of C - http://drdobbs.com[..]int?articleId=223000089&siteSectionName=

Reference of C libraries - http://programmers.stackexchange.com[..]out-there-that-include-the-gnu-c-library

Reflection for C - http://altdevblogaday.com[..]/25/reflection-in-c-part-1-introduction/

Interesting idea, integrate C and lisp - http://voodoo-slide.blogspot.com/2010/01/amplifying-c.html

How to prevent code duplication in C - http://groups.google.com[..]read/thread/b4d029524579944e?hl=en&pli=1

Why need header - http://stackoverflow.com[..]7/why-does-c-need-a-separate-header-file

How to monitor file usage - http://www.thegeekstuff.com/2010/04/inotify-c-program-example

C programming questions - http://stevenkobes.com/ctest.html

Taking input for compilation - http://susam.in/blog/compiler-taking-input-while-compiling/

Understand lvalues and rvalues - http://eli.thegreenplace.net[..]standing-lvalues-and-rvalues-in-c-and-c/

http://www.thegeekstuff.com/2012/05/classic-unix-books

You may have something like
switch (x) {
case 1 ... 100:
printf("1 <= %d <= 100\n", x);
break;
http://www.lainoox.com/ranges-in-c-switch-statements/

Tutorial - http://cslibrary.stanford.edu/101/EssentialC.pdf

C Is Not a Low-level Language - https://queue.acm.org/detail.cfm?id=3212479

(google search) (amazon search)


Wed Dec 23 20:46:42 HKT 2020 From /weblog/ai

robot


https://www.zmescience.com[..]ces/the-best-gadgets-and-robots-of-2020/

(google search) (amazon search)


Wed Dec 23 20:45:42 HKT 2020 From /weblog/science

nature


蓋亞假說:美麗的神話 - http://thehousenews.com[..]%8E%E9%BA%97%E7%9A%84%E7%A5%9E%E8%A9%B1/

色彩斑斕的動物 - http://cn.wsj.com/big5/20131203/PHO101146.asp?source=rss

地球上仍存活的最古老生物 - http://cn.wsj.com/big5/20140430/PHO082434.asp?source=rss

deep-sea-mysteries-and-oddities-that-will-leave-you-baffled - http://list25.com[..]nd-oddities-that-will-leave-you-baffled/

rare-flowers-that-are-stunning-to-look-at - http://list25.com/25-rare-flowers-that-are-stunning-to-look-at/

earth-facts-that-might-surprise-you - http://list25.com/25-earth-facts-that-might-surprise-you/

north-pole-facts-most-people-are-not-aware-of - http://list25.com[..]s-most-people-are-not-aware-of/?view=all

earth-facts-you-probably-have-not-considered - http://list25.com[..]u-probably-have-not-considered/?view=all

http://www.attenboroughsreef.com/

amazon - http://list25.com[..]he-most-unique-places-on-earth/?view=all

25 Interesting Tidbits About Deserts That Will Make You Glad For Rain - http://list25.com[..]at-will-make-you-glad-for-rain/?view=all

Antarctica is one of the coldest, most desolate places in the world, and today you're going to learn all about it. - http://www.damncoolpictures.com[..]interesting-facts-that-you-probably.html

great-barrier-reef - http://list25.com[..]-reef-facts-youll-want-to-hear/?view=all

Types of mountains - http://www.zmescience.com[..]st/main-types-mountains-earths-ups-downs

bizarre-ocean-phenomena - http://list25.com[..]ean-phenomena-you-wont-believe-are-real/

http://www.zmescience.com[..]ology/animals-ecology/animal-speed-limit

Ocean - http://list25.com[..]ising-ocean-facts-most-people-dont-know/

Earth - http://list25.com/25-shocking-facts-you-never-knew-about-earth/

sinkholes - https://www.zmescience.com[..]other/science-abc/science-abc-sinkholes/

ecosystems - https://www.zmescience.com[..]what-they-are-and-why-they-are-important

https://www.zmescience.com[..]ture-post/what-is-supervolcano-18032018/

https://list25.com/25-unbelievable-cloud-formations/

https://www.zmescience.com[..]/feature-post/largest-river-world-43223/

https://list25.com/25-longest-rivers-in-the-world/

What is soil? Here’s the inside scoop - https://www.zmescience.com/science/what-is-soil-feature/

What causes an Ice Age? A simple explainer - https://www.zmescience.com/ecology/what-causes-ice-age-14092019/

https://www.zmescience.com[..]water-dont-underestimate-the-connection/

https://www.bbc.com[..]108-why-the-world-is-running-out-of-sand

Even a little extra CO2 is triggering big changes in forests - https://www.zmescience.com[..]o2-is-triggering-big-changes-in-forests/

Christmas flakes: macro photography reveals unique snowflake design - https://www.zmescience.com[..]/great-pics/christmas-snowflakes-photos/

This is the secret behind biodiversity hotspots - https://www.zmescience.com[..]ience/biodiversity-hotspot-source-35243/

Looking back on Palmyra’s recent history, Wegmann sees it as a source of hope. Tropical islands may seem fragile, but they can turn out to be surprisingly robust. The conservation story of Palmyra should remind us of two things, he says: “One, nature is resilient. And two, we as humans can engineer ourselves out of some of the major problems that we’ve caused.” - https://www.bbc.com[..]w-tropical-islands-got-rid-of-their-rats

Rivers can change colors as time passes, and this is linked to ecosystem health - https://www.zmescience.com[..]-and-this-is-linked-to-ecosystem-health/

(google search) (amazon search)


Wed Dec 23 07:38:52 HKT 2020 From /weblog/hardware

raspberry pi


Beginner guide - http://lifehacker.com[..]rs-guide-to-diying-with-the-raspberry-pi

Cool! http://blog.afkham.org[..]uilding-raspberry-pi-cluster-part-2.html

christmas-lights-with-java-and-raspberry-pi - https://www.javaadvent.com[..]s-lights-with-java-and-raspberry-pi.html

(google search) (amazon search)


Mon Dec 21 21:38:36 HKT 2020 From /weblog/health/food

antioxidant


mushrooms - https://www.zmescience.com[..]on-medicine/mushrooms-antioxidants-rich/

high antioxidants food - https://www.webmd.com[..]ipes/ss/slideshow-all-about-antioxidants

(google search) (amazon search)


Mon Dec 21 21:36:51 HKT 2020 From /weblog/health/food

carbs


https://www.consumerreports.org[..]ealthy-eating/are-potatoes-good-for-you/

https://blogs.webmd.com[..]-to-eat-carbs-and-still-lose-weight.html

healthy-carbs - https://www.webmd.com[..]eshow-your-guide-to-eating-healthy-carbs

(google search) (amazon search)


Sun Dec 20 22:24:50 HKT 2020 From /weblog/java/performance

hotspot


How can jruby take advantage of hotspot - http://headius.blogspot.com[..]nderstanding-jvm-jit-and-helping-it.html

Discussion about OOME - http://www.codingthearchitecture.com[..]01/14/jvm_lies_the_outofmemory_myth.html

How hotspot optimization ofoptimzate Polymorphism - http://blogs.azulsystems.com/cliff/2008/03/another-round-o.html

List of tools - http://www.jroller.com/lmchung/entry/java_performance_tools

an issue of hotspot but haven't handle in 5 year - http://bugs.sun.com/view_bug.do?bug_id=6186134

A test for how hotspot inline method - http://java.dzone.com/articles/how-aggressive-method-inlining http://nurkiewicz.blogspot.com.au[..]ggressive-is-method-inlining-in-jvm.html

Various JIT optimization that JVM doing - http://blog.takipi.com[..]uper-useful-jit-optimization-techniques/

https://www.reddit.com[..]ava_as_fast_as_c_when_it_comes_to_stack/

(google search) (amazon search)


Sat Dec 19 21:29:27 HKT 2020 From /weblog/software_engineering

schedule


https://www.infoq.com/articles/volcano-prioritize-work

https://www.jrothman.com/mpd/2020/12/failure-is-always-an-option/

(google search) (amazon search)