How to create cache in opcua asycio file

Question

I want to create cache file for opcua server using opcua-asyncio, I have looked at opcua-asyncio github repository , but I did not understand enough, it was mentioned that cache can be created but nobody mentioned how can be cache created. so I am wondering how can I create cache file for optimize the performance of my python file. here is the code I am using :

import asyncio

import logging import sys from asyncua.common.ua_utils import value_to_datavalue

sys.path.insert(0, "..")

from asyncua import Server

async def main(): logging.basicConfig(level=logging.INFO) server = Server()

await server.init()


server.set_endpoint("opc.tcp://localho:4140")

await server.import_xml("Opc.Ua.Di.Nodeset2.xml")
await server.import_xml("Opc.Ua.Machinery.Nodeset2.xml")
await server.import_xml("Opc.Ua.Pumps.Nodeset2.xml")
await server.import_xml("custom.Nodeset.xml")


#starting!
async with server:
    while True:
        await asyncio.sleep(1)

if name == "main":

asyncio.run(main())

Could someone please provide a solution? What is the easiest way to create a cache file?

FYI I want to run this file into raspberry pi!

I tried several ways but unfortunately, neither of them worked.

your advice and solutions would be appreciated.

score 1 · Answer 1 · answered Jun 16 '23 at 12:24

1

I think the feature was removed because of safety concerns or just got lost in the port to asyncio. So currently this feature doesn't exist.

answered Jun 16 '23 at 12:24

Schroeder

749
4
10

Then how would you optimize the performance of python-asyncio file in raspberry pi ? because for me it took almost 4 minutes to run all these above mentioned nodeset file in raspberry pi. – Ankit Mavani Jun 17 '23 at 07:57
You could try to pickle the Server Object, before starting it. – Schroeder Jun 19 '23 at 06:59
I did not understand exactly, could you please provide me an example for better understanding? – Ankit Mavani Jun 19 '23 at 08:02
https://docs.python.org/3/library/pickle.html – Schroeder Jun 19 '23 at 09:32

How to create cache in opcua asycio file

1 Answers1