Simple strings are encoded as (+) followed by the string content and terminated by CRLF (\r\n). To send binary-safe strings, use bulk strings.
+<content>\r\n
Represents a binary-safe strings. They are encoded as follows:
$<length>\r\n<content>\r\n
The empty string's encoding is:
$0\r\n\r\n
CRLF terminated strings that represent a base-10, 64-bit signed integer. They are encoded as follows:
:[<+|->]<value>\r\n
Float type is a double precision 64-bit floating point number. Fractional part is optional. They are encoded as follows:
,[<+|->]<integral>[.<fractional>][<E|e>[sign]<exponent>]\r\n
Booleans are encoded as follows:
#<t|f>\r\n
The null type represents a non-existent value. It is encoded as follows:
_\r\n
Client requests are sent as arrays of bulk strings. The first element of the array is the command name, the rest are the arguments.
*<length>\r\n<first>\r\n<second>
So an empty Array is just the following:
*0\r\n
Maps are encoded as arrays of key-value pairs. The first element of the pair is the key, the second is the value.
%<length>\r\n<first key>\r\n<first value>\r\n<second key>\r\n<second value>
An unordered set is encoded similarly to arrays, with unique values and no guaranteed order.
~<length>\r\n<first>\r\n><second>
An ordered set is encoded similarly to arrays, with unique values and a guaranteed order.
/<length>\r\n<first>\r\n<second>
-<error message>\r\n