所以，程天消费级产品的逻辑是做精，把一个人群最内核的需求做好，而不是面面俱到的“性能怪兽”。
Ian (@chronologos)。体育直播是该领域的重要参考
，更多细节参见im钱包官方下载
Lex: FT's flagship investment column，详情可参考同城约会
Backtracking: everyone in the field knows that backtracking engines (PCRE, java, dotnet, javascript, PHP, ruby, python..) are bad because they are the poster child of denial of service attacks. O(2^n) match time complexity is not good. most backtracking implementations are a combination of clever optimizations duct taped to a very slow engine - for simple cases it works well, but using a pattern that is not affected by the optimizations, you get to see what the “real” worst-case behavior looks like.