MONITOR is a debugging command that outputs the whole sequence of commands received by the Redis server. is very handy in order to understand what is happening into the database. This command is used directly via telnet.
% telnet 127.0.0.1 6379
Trying 127.0.0.1...
Connected to segnalo-local.com.
Escape character is '^]'.
MONITOR
+OK
monitor
keys *
dbsize
set x 6
foobar
get x
del x
get x
set key_x 5
hello
set key_y 5
hello
set key_z 5
hello
set foo_a 5
hello
The ability to see all the requests processed by the server is useful in order to spot bugs in the application both when using Redis as a database and as a distributed caching system.
In order to end a monitoring session just issue a QUIT command by hand.
Return value
Non standard return value, just dumps the received commands in an infinite flow.