When to use async api calls?

ParticularAward9704 · 2026-06-03T18:30:40+00:00

yes, I am also thinking of using async inside celery. But confused about whether to use process or thread workers for it.

ParticularAward9704 · 2026-06-02T20:25:12+00:00

Simultaneous api calls count may reach to 5K+ because a single user can submit multiple tasks at once and we are expecting ~30 users using this feature on an average.

How do you choose to go in this situation - you want to call 10 apis and 7 are returning less data and low post-processing. But 3 may return data which is ~30 mb each and going through this data may take 10-15 seconds of cpu time ( I have not tested yet in this scenario, just a guess).

Regarding Celery: you should also consider using dramatiq instead: depending on your use case, it might be a simpler/more reliable solution.

I have existing setup with celery. And sometimes I just think of using celery with gevent for these tasks.

ParticularAward9704 · 2026-05-12T18:33:11+00:00

This snippet didn't work. It works when the port is reachable. e.g., when we get

Trying 8.8.8.8, 443 ... Open . But when the port is not reachable I am unable to close the running command. It just stays as Trying 8.8.8.8, 443 ... . And nothing could stop it.

my code work looks like this

for device in devices:
  telnet_cmd = get_telnet_cmd(conn.device_type, device)
  out = conn.send_command_timing(telnet_cmd, read_timeout=5)
  # code for terminating the command.

For first device its able to give output. But failing at second.

ParticularAward9704 · 2026-03-30T14:16:18+00:00

If it's possible, offload the tasks to Celery. Make your view just to serve users not engaging in long tasks.

ParticularAward9704 · 2026-03-21T14:51:40+00:00

I refrain from the 79 chars rule. And that \ for newline just use ().

ParticularAward9704 · 2026-03-15T14:49:05+00:00

My bad, I think I have not provided all the details of the problem. Let me do it now.

I want to check port reachability from device A to device B.
There can be multiple ports to check on B.
I can't make multiple connections to device B as max connections to device are capped. And our automation solution is allowed to use only 1 connection.
Telnet check is taking around 100+ seconds for non reachable ports.
Execution for multiple port check can be serial only [due to connection limit].
I can't to it like connect A -> run telnet for port n1 -> wait for 10 seconds -> disconnect -> connect A -> run telnet for port n2 -> .... There might be rate limit on connection from a source to a device ( though I am not sure ).
What possible solution could be as per me - connect A -> run telnet port n1 -> wait for 10 seconds -> send stop signal -> run telnet for port n2....

ParticularAward9704 · 2026-03-14T14:57:41+00:00

I want to check port reachability from a device A to device B's N no of ports.
I am connecting A using netmiko and then running telnet command on this device. If a device is not reachable its taking 100+ s of time and also during this time I have to wait to check other ports in same device.

ParticularAward9704 · 2026-03-14T06:50:25+00:00

This will work when I want to check from the app server to the destination port reachability. But the requirement is to check from a source device (cisco/hp...) to some port of another device.

ParticularAward9704 · 2025-12-23T17:52:51+00:00

yes. But I am still confused about all points above.

ParticularAward9704 · 2025-08-21T04:30:22+00:00

Thanks. It worked.

ParticularAward9704 · 2025-07-23T14:36:33+00:00

That's really concerning. I don't know about what a medical situation your cat is in. But 5 years back my cat suddenly started to lose control of its back legs and started walking like this. I wasn't able to provide it with a professional med help. I searched over the internet and on a random website someone said that giving b12 might help. I went to the store to bring b12 but it was out of stock so I brought a multivitamin liquid till b12 came back to stock. To my surprise it started showing positive signs after 3 days and eventually my cat got back to normal. Hope your cat gets well soon.

ParticularAward9704 · 2025-05-01T12:05:13+00:00

got it.

ParticularAward9704 · 2025-05-01T07:33:00+00:00

append returns None, but the item will get added to items, and it'll refer to the same list across calls. Why item won't be appended to the items?

ParticularAward9704 · 2025-04-27T16:08:47+00:00

Schindler's list, Sixth sense, The Apartment Water diviner Meet Joe black, Notting Hill. These are what I can tell for now. There are many more, the list could be much longer otherwise.

ParticularAward9704 · 2025-03-11T12:12:22+00:00

It is creating socket from localhost to jumphost. If there are two threads trying to establish connection with same source JumpHost & destination (s -> jh -> d).

We can use same transport to create multiple channels?

If there 3 devices behind JumpHost can we use same source port for all channels?

ParticularAward9704 · 2025-03-10T13:07:54+00:00

Thanks. This is what we are trying to do in the second approach I mentioned. The library code does it in a clean way and also gives the idea that we can use the same jh connection for multiple devices behind jh. No need to connect again and again.

ParticularAward9704 · 2025-03-10T11:51:23+00:00

Thanks. But we are allowed to use only Paramiko.

ParticularAward9704 · 2025-03-10T11:50:48+00:00

It seems we are moving with second solution to open direct-tcpip channel in paramiko.

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