Cache Operations, currently only with putting.

CacheOperations.java

public class CacheOperations {
    public void putOperations(Ignite ignite, String cache_name, int thread_num) {
        TimeRecord tr = new TimeRecord();
        tr.reset();
        int step = 20000;
        PutTask[] tasks = new PutTask[thread_num];
        for (int i = 0; i < thread_num; i++) {
            tasks[i] = new PutTask(ignite, cache_name, step*(i-1), step*i);
            tasks[i].start();
        }

        for (PutTask task: tasks){
            try {
                task.join();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        long cost = tr.end();
        System.out.println(Format.ops(thread_num*step, cost));
    }

    private class PutTask extends Thread{
        private IgniteCache cache;
        private int begin;
        private int end;

        public PutTask(Ignite ignite, String cache_name, int begin, int end){
            this.cache = ignite.getOrCreateCache(cache_name);
            this.begin = begin;
            this.end = end;
        }

        @Override
        public void run() {
            for (int i = begin; i < end; i++){
                cache.put(i, i);
            }
        }
    }
}