Home » Author Archives: Andy Song

Author Archives: Andy Song

Java threads: How many should I create

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Introduction “How many threads should I create?”. Many years before one of my friends asked me the question, then I gave him the answer follow the guideline with ” Number of CPU core + 1″. Most of you will be nodding when you are reading here. Unfortunately all of us are wrong at that point. Right now I would give ...

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Sharding system architecture: Several things you may need know

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[Introduction] Some of you may wondering what’s sharding? If you don’t know the concept, please read the link http://en.wikipedia.org/wiki/Shard_(database_architecture). It’s very useful when you want to deal large data set throughput and traditional single data cluster group (Master-Slave, Master-Master and Slave-Slave, etc) setting couldn’t survive from that kinds of situaion. It’s concept is very simple and you may know in ...

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