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learn - innovate - share
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仙人掌世界: January 2009
http://blog.brandonc.me/2009_01_01_archive.html
Learn - innovate - share. Jan 5, 2009. The JNDI could support java client to get EJB instance from J2EE Container. We have two type configuration for JNDI. First one,To hardcode properties in program look like listing 1, another one is put properties in file jndi.properties and place on root directory of classes. Listing 2 (jndi.properties). Javanaming.factory.initial=org.jnp.interfaces.NamingContextFactory java.naming.provider.url=localhost:1099. Subscribe to: Posts (Atom). This work by Brandon Chen.
仙人掌世界: December 2011
http://blog.brandonc.me/2011_12_01_archive.html
Learn - innovate - share. Dec 20, 2011. Java Performance]Chapter 2:Operating System Performance Monitoring. 這篇談到如何在作業系統層級搜集數據(CPU、Memory、Network I/O、Disk I/O)，從數據中分析可能的效能問題. Performance monitoring： 使用非侵入式的方法從作業系統或應用程式搜集、觀察數據，如使用作業系統提供的工具(e.g. vmstat)搜集效能數據，但不會影響應用程式的行為與效能，這方法適用於大部份的環境(production / development/ testing .)使用. Performance profiling： 使用侵入式方法搜集較特定目標數據，如某method的total cpu time/輸入參數，但可能會調整到應用程式行為或者降低效能，這方法比較適用於development/ testing 環境. Dec 15, 2011. Garbage collection 引入的延遲否容許？ Dec 6, 2011. Is li...
仙人掌世界: golang - Flag 隱藏選項 -help 與 -h
http://blog.brandonc.me/2013/04/golang-flag-help-h.html
Learn - innovate - share. Apr 21, 2013. Golang - Flag 隱藏選項 -help 與 -h. 預設的 FlagSet 裡藏了兩個預設選項 -help 跟 -h, 在用 flag 時可以少寫一點 boilerplate code. Func (f *FlagSet) parseOne() (bool, error) { / ignored flag, alreadythere := m[name] if! Alreadythere { if name = help name = h { / special case for nice help message. f.usage() return false, ErrHelp } return false, f.failf(flag provided but not defined: -%s, name) } / ignored }. 上面那段 code 的意思是程式裡沒有設定 h 或 help 選項，若是執行的時候從 command-line 解析到 h 或 help 就印出 usage (. Random ...
仙人掌世界: April 2012
http://blog.brandonc.me/2012_04_01_archive.html
Learn - innovate - share. Apr 7, 2012. STM（ software transactional memory. 65289;是種 concurrency control. 160;機制，相對於用 locking 進行同步化，更安全與簡單，以下使用帳戶轉帳的例子實作比較locking與STM. 多組帳號同時以隨機金額進行轉帳，轉帳過程要保證沒有 race condition 與避免 deadlock. Subscribe to: Posts (Atom). Memcached vs Redis vs MongoDB vs MySQL 效能比較. 使用 TOTP 與 Google Authenticator 實作 Two-Factor authentication. Random / Math.random() / ThreadLocalRandom. Java Performance]Chapter 2:Operating System Performance Monitoring. This work by Brandon Chen.
仙人掌世界: Memcached vs Redis vs MongoDB vs MySQL 效能比較
http://blog.brandonc.me/2011/11/memcached-vs-redis.html
Learn - innovate - share. Nov 21, 2011. Memcached vs Redis vs MongoDB vs MySQL 效能比較. 做分散式快取服務即是典型的應用模式，Memcached 使用概念簡單且相關應用情境、文件、工具、演算法都已相當成熟，許多知名網站都運用 Memcached 提升scalability，像是GAE、Heroku 等PaaS 環境也有提供 Memcached 的收費服務，這些市場訊息已說明大規模的使用記憶體是可以合乎成本效益的。 是近年隨著 NoSQL 熱潮出現的 Key-Value store，其功能涵蓋了 Memcached 並且提供許多高階功能，在許多應用情境下相較 Memcached，能降低開發與營運複雜度，比如：. 豐富的資料結構(strings, hashes, lists, sets and sorted sets) 更易於設計適當的資料粒度增進資料重用的機會，且可依不同的資料結構特性在redis server上做組合與計算，降低開發上的複雜度與資料傳輸. 資料覆寫功能 提升讀取效能，提升 availability.
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The Ward Family
Brandon's Perspective
Sunday, November 30, 2008. Thanksgiving 2008 in Drexel Hill - A success. Thanksgiving was a success this year. It was the first time we ever had a holiday meal at our house and it went well. My parents arrived around noon while I was frying the turkey. This was our second deep fried turkey and I must say they're delicious - and way faster than baking a turkey in the oven. My grandmother came also, Lucia loves her. My dad was a natural at Wii Bowling. It must be genetic. Posted by Brandon @ 8:11 PM. New M...
DreamHost
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// Of no consequence...
Musings on Healthcare, Economics, Psychology, Technology, and Innovation. Vision is the world's most desperate need. There are no hopeless situations, only people who think hopelessly." - W. Newman. Subscribe to: Posts (Atom). People Helper, Problem Solver, Technology Visionary. View my complete profile.
Somewhere Between Awake and Asleep
Musings from the 3rd shift. 13 Really Useful Online CSS Tools to Streamline Development Design Reviver. On September 16, 2011. 13 Really Useful Online CSS Tools to Streamline Development Design Reviver. Secunia Personal Software Inspector PSI – Introduction. On July 13, 2011. Secunia Personal Software Inspector PSI – Introduction. How to Tie a Tie: Four Popular Styles. On May 20, 2011. How to Tie a Tie: Four Popular Styles. Restore Your iPhone Without Losing Your Homescreen Organization. On May 20, 2011.
仙人掌世界
Learn - innovate - share. May 6, 2013. 最近比較少用 IDE 後，coding 少了些自動化的回饋機制總覺得缺了點什麼，手動執行不知不覺也浪費了許多時間. 想了想, 有些重複流程是可以用程式自動化的, 只要有程式來偵測目錄變動並自動執行程式就夠了，. 於是用 Go 做了一個命令列工具 watchf. 65292;能彈性組合命令, 也可以在多個作業系統上使用. 程式碼存檔時從另一個 terminal 看到程式碼錯誤分析、compiler 編譯訊息跟測試結果. Watchf -e modify,delete -c go vet -c go test -c go install -p .go$. Watchf -r -i 5s -e modify,delete -c mvn test -p .java$. Watchf -r -c rsync -aq $SRC $DST &. Watchf -e modify,delete -c go vet -c go test -c go install -p .go$ -w. Apr 21, 2013. Package main i...
Fragile Equilibrium
Thursday, January 3, 2013. Everything You Know About Startups is Wrong. Every generation finds its own management style. The "Bell Curve" style of management, popular in the 80's and 90's, is now eating holes in many corporations and is being viewed through a much darker lens (see Vanity Fair's excellent piece Microsoft's Lost Decade. However, I'd like to suggest that we've gorged ourselves and taken this too far. There's a wonderful little clip on YouTube. Herein lies a problem with taking The Lean Star...
Brandon Copley
8212; Main Menu —. Update git, security vulnerabilities currently exist. To anyone out there using git, a major security vulnerability was just found. Please update Git immediately. https:/ github.com/blog/1938-git-client-vulnerability-announced Thanks Colin Hemphill for bringing this to my attention! Digital Ocean & Linode. Videos for ecommerce websites. Beats headphones & the Apple Acquisition. The fatal flaw of Socket.io 0.9.x. Socket.io in it’s current working state has a very interesting f...
Distracts Others
Google Drive App for Linux (and Mac). I hate desktop-cloud synchronization applications. Google's Drive Sync application is only available for Mac and Windows. I don't care. I have about two terabytes of files in cloud storage. I have several different machines with very different purposes—desktops, laptops, servers, mobile devices—and I only want to store files locally if I'm actually going to use them for something. I need a command line tool. Google, through unofficial channels, has delivered. You can...
Brandon Duncan's Blog
The Four States of Javascript References. Posted on 27/03 23:30. For instance, this Javascript snippet will fail with the error "abc is not defined":. Null) alert ("not null! Once we add a line defining abc, then we can refer to it:. Var abc = null;. Null) alert ("not null! This code will run without error and the alert will not occur. Assuming abc *might* be defined elsewhere, the way we protect our code against abc not being defined looks like this:. More compactly you can write:. Posted on 09/02 15:03.
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Sunday, February 27, 2011. Monday, February 07, 2011. February 15, 2010 Revisited: Tips for SYMC. I am just thinking of a few tips to help you out while you are in Chicago. TIP #1 Bring your Jack Bauer man bad. Or some type of European carry-all. You are going to have your. TIP #2 Bring business cards and address stickers. TIP #3 Know what sessions and workshops. Hope this helps a little and gets you excited that we are only a few days away form our weekend together. Wednesday, January 12, 2011. Worked i...
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