async await try catch performance issue

Question

I wrote a Javascript code using async, await and used try, catch in each async function.

Suppose if I write 10 async function then I need to write try, catch in all those 10 functions. Now I am getting question in my mind that doesn't it cause performance overhead?

If it causes any performance overhead then what will be the solution for this problem?

You would have to show us the SPECIFIC and REAL code (not pseudo code) for us to comment. There is no generic substitute for `try/catch` if your code needs it. And, ALL performance questions like this ultimately need to be resolved by measuring/testing in a specific JS engine or by realizing that you're microptimizing something that you haven't even proven there is a performance issue with (also done with measuring) and not spending any time worry about it now. — jfriend00, Apr 23 '20 at 05:51

score 2 · Accepted Answer · answered Apr 23 '20 at 05:38

2

You can write single try catch, in try you can add all of the async-await functions.

try { 
   // service as an example
   const get = await service.get()
   const post = await service.post()
   const delete = await service.delete()
} catch(e) {
  throw new Error(e)
}

answered Apr 23 '20 at 05:38

onuriltan

3,730
4
25
37

Whether writting try catch in each async function cause performance issue? – Ziaullhaq Savanur Apr 23 '20 at 06:51
Try catch is same as calling callbacks like .then() and .catch() so performance is the same, just the code is sync – onuriltan Apr 23 '20 at 06:53
If you have any link or docs please provide, not able to follow. – Ziaullhaq Savanur Apr 23 '20 at 10:29
You can read the last pharagraph of the answer here https://stackoverflow.com/a/19728876/3756237 – onuriltan Apr 23 '20 at 10:32

async await try catch performance issue

1 Answers1