Menu
Using telnet I type in command line commands like this
get field with spaces
get "field with spaces"
get 'field with spaces'
And all this three return same error.
-ERR wrong number of arguments for 'get' command
855
To list the keys in the Redis data store, use the KEYS command followed by a specific pattern. Redis will search the keys for all the keys matching the specified pattern. In our example, we can use an asterisk (*) to match all the keys in the data store to get all the keys.
Redis quickly stretched this concept with data types, where a single key could refer to multiple (even millions of) pieces of data.
Redis Strings Strings is an array data structure of bytes (or words) that stores a sequence of elements, typically characters, using some character encoding. It can store any data-a string, integer, floating point value, JPEG image, serialized Ruby object, or anything else you want it to carry.
Redis keyspace notifications allow you to subscribe to PubSub channels. Through the channel, clients receive published events when a Redis command or data alteration occurs. These notifications are useful when an application must respond to changes that occur to the value stored in a particular key or keys.
What version of redis are you using? It works fine for me on 2.2.2 using double quotes
root@this:~# redis-cli
redis> set "test space" hello
OK
redis> get "test space"
"hello"
redis> get 'test space'
(error) ERR wrong number of arguments for 'get' command
redis>
If you only have telnet (and not 'redis-cli'), then you need to use the Redis binary-safe unified protocol to use spaces in key names, for example:
telnet localhost 6379
*2
$3
GET
$17
field with spaces
hello (this is Redis answer if "field with spaces" contains value "hello")
Explanation:
*2 = Number of arguments (first arg is "GET" and second is "field with spaces")
$3 = length of first argument ("GET" contains 3 bytes)
$17 = length of second argument ("field with spaces" contains 17 bytes)
More information about Redis binary-safe protocol: http://redis.io/topics/protocol
29
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
