Discussion on: What would your tech stack of choice be for a new web dev project?

[Chris Ochsenreither]

Cold starts can be long for interpreted languages like Python, Node.js and Ruby. Here's a comparison of 20 lambda executions from cold start where a user is created:

Create User

Payload:

{
    "email_address": "[e-mail]",
    "first_name": "Jonathon",
    "last_name": "Doe",
    "password": "vaFR6z2D8xstaao4EyvP"
}

Metric	Duration (ms)	Duration (ms)	Memory Used (MB)	Memory Used (MB)
Trial	Node.js 14.x	Python 3.7	Node.js 14.x	Python 3.7
1	753	203	80	69
2	408	17	82	69
3	9	35	82	69
4	39	30	82	69
5	22	34	82	69
6	18	28	82	60
7	21	36	82	69
8	8	35	82	69
9	28	43	82	69
10	10	31	82	70
11	9	21	82	70
12	7	38	82	70
13	23	36	82	70
14	8	33	82	70
15	8	21	82	70
16	17	43	82	70
17	22	27	82	70
18	22	43	82	70
19	8	68	82	70
20	8	12	82	70
Sum	148	834	1638	1391
Average	72.4	41.7	81.9	70
Median	17.5	34.5	82	70

[menottiRicardo]

thanks a lot for that info, are you using Express or Nest for Nodejs?

[Chris Ochsenreither]

I'm not using a framework for these functions. API Gateway provides the url REST endpoints and those endpoints are linked to event handler functions. The functions are stand-alone and just import the packages required within the function.