g++ -std=c++11 -o async-redis async-redis.cpp -g -L/usr/local/lib -lhiredis -lev sync 10w->25s async-redis:10w -> 1.4s
async: test write cmd count:100000 count:100000 steady_clock time:1477.4 system time: 1477.55
sync: 10w 25s count:100000 steady_clock time:25479.6 system time: 25479.8