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Wed Mar 19 02:56:41 GMT 2014
From /weblog/design
Really? I would rather say every line of code need to maintain - http://www.javacodegeeks.com[..]s-copy-and-paste-programming-really.html Data, Type, Algorithm - http://www.dotnetcodegeeks.com[..]012/05/types-of-duplication-in-code.html Using closure to prevent code duplication - http://dublintech.blogspot.com.au[..]com.au/2014/03/good-use-of-closures.html "Duplicated code is the root of all evil in software design. When a system is littered with many snippets of identical, or nearly identical code, it is indicative of sloppiness, carelessness, and sheer unprofessionalism. It is the guilt-edged responsibility of all software developers to root out and eliminate duplication whenever they find it." - http://edmundkirwan.com/general/duplication.html
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Fri Dec 20 04:17:18 GMT 2013
From /weblog/design/distribute
Solution #1: Have More Resources than You'll Ever Need Solution #2: Disable Features During High Loads Solution #3: Auto Scaling Solution #4: Use Message Queues http://blog.iron.io[..]spikability-applications-ability-to.html http://highscalability.com[..]izing-and-capacity-planning-assumin.html
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Fri Nov 01 06:28:59 GMT 2013
From /weblog/design/examples
Key points 1) No stored procedures are used. There are some very simple triggers. 2) Move cpu-intensive work moved out of the database layer to applications applications layer: referential integrity, joins, sorting done in the application layer! Reasoning: app servers are cheap, databases are the bottleneck. 3) No client-side transactions. no distributed transactions 4) J2EE: use servlets, JDBC, connection pools (with rewrite). Not much else. 5) No state information in application tier. Transient state maintained in cookie or scratch database. http://highscalability.com/ebay-architecture How ebay use Cassandra - http://www.infoq.com[..]-practice-of-cassandra-data-model-design http://www.infoq.com[..]ctices-cassandra-data-model-design-part2 http://www.ebaytechblog.com[..]dra-data-modeling-best-practices-part-1/ http://www.ebaytechblog.com[..]dra-data-modeling-best-practices-part-2/
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Sat Mar 02 09:01:24 GMT 2013
From /weblog/design
Contain resource of measurable code metric information - http://thediscoblog.com[..]20/code-quality-for-software-architects/ Meaningful Metrics - http://www.developsense.com/2009/01/meaningful-metrics.html http://programmers.stackexchange.com[..]ions/115839/how-clean-should-new-code-be Guidelines for a more appropriate use of metrics Explicitly link metrics to goals Favor tracking trends over absolute numbers Use shorter tracking periods Change metrics when they stop driving change http://martinfowler.com/articles/useOfMetrics.html
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Mon Jan 21 09:07:23 GMT 2013
From /weblog/design
Agile Models Distilled: Potential Artifacts for Agile Modeling - http://www.agilemodeling.com/artifacts/ Difference between Association, Composition, Aggregation, Dependency, Abstraction, Realization, Generalization - http://techie-experience.blogspot.gr[..]1/quick-summary-object-associations.html
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