[redis]redis集羣不支持事務multi、exec

• multi後不能執行get，沒有結果返回的
• 也不能redirected，不然exec不行

132.120.2.134:26000> MULTI
OK
132.120.2.134:26000> get abc
QUEUED
132.120.2.134:26000> GET ABC
-> Redirected to slot [14740] located at 132.120.2.135:26001
(nil)
132.120.2.135:26001> SET ABC 2
OK
132.120.2.135:26001> GETSET
(error) ERR wrong number of arguments for 'getset' command
132.120.2.135:26001> EXEC
(error) ERR EXEC without MULTI

set若是redirected一樣不行

132.120.2.135:26001> multi
OK
132.120.2.135:26001> set abc 1
-> Redirected to slot [7638] located at 132.120.2.134:26000
OK

multi能夠小寫，命令不區分大小寫。 可是key區分。abc和ABC不一樣。

• 若是先set，再expire，可用set EX代替事務

132.120.2.134:26000> set abc 212 EX 30
OK