A task-driving parallel ranking algorithm is proposed to meet demands for ranking algorithms for big data.Task-driving,AIO(Asynchronous Input and Output)and dual-buffer zone mechanisms are employed to make full use of system resources.The quick ranking algorithm is optimized by building equivalent keys.In algorithm implementation,parallel concurrences are controlled through the number of threads by using multi-threading in task handling.Through integrative use of such technologies,the ranking performance of...