I am currently working with zeroMQ in Node.js. ZeroMQ allows for message passing between applications in the form of strings. The application will be processing hundreds of thousands of messages.
Would it be faster to parse a delimited String:
"foo bar baz".split(' ');
or a stringified JSON object:
JSON.parse('{"a":"foo","b":"bar","c":"baz"}');
How would one go about testing the efficiency of each (speed & memory) in Node.js and / or in the Browser.
to test the required time to execute any instruction in the browser (assuming you have chrome or chromium for Linux ) you can use the something similar to the following code :
// first open the inspector **ctrl+shift+i** then switch to the console tab to write the code
// or you can go to `tools > developer tools` then choose the console tab
// here is the code :
console.time('t1');
"foo bar baz".split(' ');
console.timeEnd('t1');
// result t1: 0.020ms
console.time('t2');
// you instructions here
JSON.parse('{"a":"foo","b":"bar","c":"baz"}');
console.timeEnd('t2');
// result t2: 0.046ms
it is clear that the first way is faster than the second way
note : to convert object string to JSON format you have to put both property and its value within ""
for example in our case :
a:"foo" should be "a":"foo"
b:"bar" should be "b":"bar" and so on
so the entire string ('{a:"foo",b:"bar",c:"baz"}' in the second way ) should be '{"a":"foo","b":"bar","c":"baz"}'
console.time("t1");for(var i=0;i<1000000;++i) { "foo bar baz".split(" "); } console.timeEnd("t1"); Gives me ~100ms. console.time("t2");for(var i=0;i<1000000;++i) { JSON.parse('["foo","bar","baz"]'); } console.timeEnd("t2"); gives me around ~350ms. split seems faster. Array.join is ~85ms, JSON.stringify ~240ms.