XINFO command in Redis is commonly used in scenarios where details about a stream are needed. It gives useful information such as the number of items in the stream, number of consumers, last generated ID and more.
To use the
XINFO command in PHP with Redis, you will need to have the Redis extension installed. Below is an example:
In this example, we first create a connection to the Redis server. Then, we add a key-value pair to a stream named 'mystream'. We then use the
rawCommand method to send the
XINFO STREAM mystream command to Redis, which returns information about the 'mystream'. We print this data using
When using the
XINFO command in PHP, remember:
XINFO. If the stream does not exist, Redis will return an error.
XINFOon large streams, as it may be resource-intensive.
One common mistake is assuming
XINFO behaves like other commands in the PHP Redis extension, where you can pass arguments separately instead of all being passed in one array (like
rawCommand). The correct usage of
rawCommand is to pass all the arguments in an array after the command.
XINFO work with the PHP Redis extension's methods like xRead, xAdd, etc.?
XINFO is not a method in the PHP Redis extension, you have to use the
rawCommand method and pass 'XINFO' as an argument to this method.
Q: What information can I get from
XINFO STREAM <stream>?
A: You can get various details such as the number of items in the stream, the last generated ID, the number of consumers, groups, and more.