其他（扩展知识）

性能测试

# 假定并发量为100，测试100000次请求
[root@cloudhost bin]# redis-benchmark -h localhost -p 6379 -c 100 -n 100000
====== PING_INLINE ======
  100000 requests completed in 1.20 seconds
  100 parallel clients
  3 bytes payload
  keep alive: 1

98.82% <= 1 milliseconds
99.89% <= 2 milliseconds
100.00% <= 3 milliseconds
100.00% <= 3 milliseconds
83402.84 requests per second

====== PING_BULK ======
  100000 requests completed in 1.20 seconds
  100 parallel clients
  3 bytes payload
  keep alive: 1

99.15% <= 1 milliseconds
99.99% <= 2 milliseconds
100.00% <= 2 milliseconds
83125.52 requests per second
# SET测试，负载3个字节，平均每秒处理83125.52个请求
====== SET ======
  100000 requests completed in 1.20 seconds
  100 parallel clients
  3 bytes payload
  keep alive: 1

98.55% <= 1 milliseconds
99.90% <= 2 milliseconds
100.00% <= 2 milliseconds
83125.52 requests per second

====== GET ======
  100000 requests completed in 1.19 seconds
  100 parallel clients
  3 bytes payload
  keep alive: 1

99.22% <= 1 milliseconds
99.88% <= 2 milliseconds
99.90% <= 3 milliseconds
99.95% <= 4 milliseconds
100.00% <= 4 milliseconds
84245.99 requests per second
...
====== MSET (10 keys) ======
  100000 requests completed in 1.28 seconds
  100 parallel clients
  3 bytes payload
  keep alive: 1

63.38% <= 1 milliseconds
99.45% <= 2 milliseconds
99.91% <= 3 milliseconds
99.97% <= 4 milliseconds
100.00% <= 4 milliseconds
78064.01 requests per second