Timing Queries in Redis-Cli?

Question

This seems like it ought to be trivial, but I want to run a query through redis-cli, and then just get back how long it took on the server, along with the results. This is just

Answer 1

You can do this by wrapping the redis command you're investigating in a MULTI/EXEC block, where the TIME command is used right before and right after your command. For example:

Using the node library:

var multi = redis.multi();
multi.time(); // start time
multi.sunionstore(['fast_food_joints', 'pizza_hut', 'taco_bell']); // this is the command I'm investigating
multi.time(); // end time
multi.exec(function(err, responses){
    var response = responses[1]; // the response i care about
    var start = (parseInt(responses[0][0]) * 1000) + (parseInt(responses[0][1]) / 1000);
    var end   = (parseInt(responses[2][0]) * 1000) + (parseInt(responses[2][1]) / 1000);            
    var execution_time = end - start; // in milliseconds
});

Or... using the command line (which is what you asked for in your question):

192.168.1.1:6379> MULTI
OK
192.168.1.1:6379> TIME
QUEUED
192.168.1.1:6379> SUNIONSTORE fast_food_joints pizza_hut taco_bell
QUEUED
192.168.1.1:6379> TIME
QUEUED
192.168.1.1:6379> EXEC
1) 1) "1450818240"
   2) "666636"
2) (integer) 48886
3) 1) "1450818240"
   2) "666639"

And then do the math yourself. The above example took 3 microseconds.