Long startup time | discord.js - imagine an app | Page 1

earnest moth Sep 13, 2022, 8:18 PM

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Hi, my bot is currently in ~2000 servers and it takes about 20 seconds for the 'ready' event to fire. I'm worried that as the bot continues to grow it will take several minutes for shards to go online, so I'm wondering what the best way to reduce the startup time is?

steel fiberBOT Sep 13, 2022, 8:18 PM

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tight bay Sep 13, 2022, 8:30 PM

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Distribute shards into different processes. eg using pm2.

gaunt sigil Sep 13, 2022, 10:18 PM

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Iirc, Discord has a max concurrency limit for shard identifies

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That might be limiting your ability to start a lot of shards at once

stone oriole Sep 14, 2022, 4:36 AM

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uhhh

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max concurrency is almost entirely irrelevant here

balmy oar Sep 14, 2022, 6:37 AM

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2000 servers can be managed by 1 shard alone, depending on what your bot does might need 2 or 3. I figure you use internal sharding? Using traditional sharding would reduce startup time pretty sure

stone oriole Sep 14, 2022, 11:54 PM

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It probably would not, actually

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It has no basis to be faster given what sharding actually is

balmy oar Sep 15, 2022, 4:37 AM

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Well, since internal sharding has a hardcoded 5s delay to start the next shard it somehow has…

stone oriole Sep 15, 2022, 5:54 AM

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everything has that delay

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because it isn't our random addition

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discord requires that 5s between identify calls.

Clients are limited by maximum concurrency when Identifying; if they exceed this limit, the gateway will respond with an Opcode 9 Invalid Session.

max_concurrency integer The number of identify requests allowed per 5 seconds

gaunt sigil Sep 15, 2022, 10:37 AM

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The base concurrency is one?

stone oriole Sep 15, 2022, 10:39 AM

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it's almost always 1

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the only case where it isn't is if your bot has big bot sharding

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which is 150_000 servers rn

gaunt sigil Sep 15, 2022, 10:40 AM

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Yeahh, I was reading the docs for sharding

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~~Imagine~~ starting 100 shards with 5sec delay notLikeCat

stone oriole Sep 15, 2022, 10:40 AM

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you don't have to imagine. that's how that works

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if you have 100000 servers you really should be running code that doesn't require you to restart entire bot to update / fix something

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so while annoying, yes, should be rare occurence at this scale

gaunt sigil Sep 15, 2022, 10:42 AM

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Got it, I'm not that good on programming

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But if one day I have the opportunity to have a bot that big

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It would be a nice project to work on

stone oriole Sep 15, 2022, 10:42 AM

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reloading commands and client.off exist

gaunt sigil Sep 15, 2022, 10:43 AM

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client.off hmmm (alias for removeListener)

#Long startup time