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I don't get point of using Node.js when compared to something like Elixir. Elixir's Phoenix can handle more numbers of concurrent connections as well as provide reliability with better programming abstractions, distribution, pretty good language.
A few pieces of advice based on running https://github.com/mozilla-services/autopush-rs , which handles tens of millions of concurrent connections across a fleet of small EC2 instances. 1) Consider not running the largest instance you need to handle your workload, but instead distributing it across smaller instances. This allows for progressive rollout to test new versions, reduces the thundering herd when you restar…
Could you explain or post a link to something about #2? I’ve never heard of that before!
So 1/4 of what Elixir/Erlang can handle, but more difficult and less reliable: https://phoenixframework.org/blog/the-road-to-2-million-webs...
There is more performant web-socket implementation than the one mentioned in the blog. It can handle 6X more connections and much less memory https://github.com/uNetworking/uWebSockets.js EDIT: Note that the blog post is from 2015. There are many optimization (Ignition and TurboFan pipeline) has been done in V8 since then, especially offloading GC activity to separate thread than NodeJS Main thread.
This is doubly unfortunate because I very much share his views on bloated frameworks etc. :(
A few pieces of advice based on running https://github.com/mozilla-services/autopush-rs , which handles tens of millions of concurrent connections across a fleet of small EC2 instances. 1) Consider not running the largest instance you need to handle your workload, but instead distributing it across smaller instances. This allows for progressive rollout to test new versions, reduces the thundering herd when you restar…
https://docs.aws.amazon.com/elasticloadbalancing/latest/netw...
I don't get point of using Node.js when compared to something like Elixir. Elixir's Phoenix can handle more numbers of concurrent connections as well as provide reliability with better programming abstractions, distribution, pretty good language.
- What third party libraries do you need to use? Some languages have very good support for some, and less for others.
- What are the internal integrations you need to support? Can they be over the network or are you calling into code in a particular language?
- What is the pool of skills available to you as a team? Do you go with a language that has a reputation of being really good for this task but of which the team knows very little (and therefore will have a learning curve working out the common pitfalls), or do you go with a better understood language which the team has already mastered, and stretch it to go beyond what mere mortals do with it? Note: there's no right answer here, both options have severe drawbacks.
- Related to the previous: what's your company's culture regarding technical diversity?
In particular right now I am trying to add live reloading to my App Engine Standard app but Standard doesn't support long lived connections (so no websockets) and App Engine Flexible seems like it will be pricy.
I think I can set up a single separate websocket instance which is only responsible for doing listen/notify on postgres and telling the client when it's time to refetch from the main webserver again.
Does this sound approximately workable? Will I actually be able to reach the connection numbers like in this article?
I don't get point of using Node.js when compared to something like Elixir. Elixir's Phoenix can handle more numbers of concurrent connections as well as provide reliability with better programming abstractions, distribution, pretty good language.
There are a handful of languages that would be suitable for this. The "right one" to use depends on more than just the language features for that task: - What third party libraries do you need to use? Some languages have very good support for some, and less for others. - What are the internal integrations you need to support? Can they be over the network or are you calling into code in a particular language? - What i…