Performance tuning

Recursion provides us an easy way to solve some problems, and makes the code simpler and easier to follow. But one problem of it is the memory cost caused by the recursive call stack, which could be critical for memory sensitive applications like mobile ones. [Read More]

MapReduce is not a low latency computing model, minutes at least will go before we got the result. But this does not mean there's no way for us to make it faster. Combined with the nature of Hadoop, here are some solutions from different pespective. [Read More]