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What is the Meteor concurrency model?


What is the Meteor concurrency model?

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What is the Meteor concurrency model?
Tag : javascript , By : Dominique Vocat
Date : November 25 2020, 01:01 AM


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WPF concurrency model


Tag : chash , By : Alpinfish
Date : March 29 2020, 07:55 AM
like below fixes the issue Yes the WPF UI thread will initialize the COM apartment state as single threaded. If it isn't single a single threaded apartment a whole bunch of stuff will fail.
You'll need to start a new thread and call the your C++ DLL and ensure that the apartment state of that thread is multi-threaded. A thread's apartment state can be set using Thread.SetApartmentState, but all new threads are multi-threaded by default.

What is the Concurrency Control technique used in Meteor


Tag : meteor , By : Guyou
Date : March 29 2020, 07:55 AM
around this issue There is currently no conflict resolution in Meteor. MongoDB controls atomic operations, but the last write wins. You can try to do things a little more carefully by using upsert operations, etc.
There is currently no native OT support for Meteor, but it is on the roadmap and in the meantime people like me have made packages that allow OT packages like sharejs to be integrated into Meteor apps: https://github.com/mizzao/meteor-sharejs.

TCP accept and Go concurrency model


Tag : development , By : Mark
Date : March 29 2020, 07:55 AM
hop of those help? Looking at net.TCPListener. One would expect, given the Go concurrency paradigm, for this system functionality to be implemented as a channel, so that you got a chan *net.Conn from a Listen() function, or something similar to that. , Your code is just fine. You could even go further and replace:
s.acceptChannel <-&Connection{tcpConn: rw, .... }
go handleConnection(&Connection{tcpConn: rw, .... })
newConns := make(chan net.Conn)

// For every listener spawn the following routine
go func(l net.Listener) {
    for {
        c, err := l.Accept()
        if err != nil {
            // handle error (and then for example indicate acceptor is down)
            newConns <- nil
            return
        }
        newConns <- c
    }
}(listener)

for {
    select {
    case c := <-newConns:
        // new connection or nil if acceptor is down, in which case we should
        // do something (respawn, stop when everyone is down or just explode)
    case <-time.After(time.Minute):
        // timeout branch, no connection for a minute
    }
}

Concurrency between Meteor.setTimeout and Meteor.methods


Tag : node.js , By : littlefuzz
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Great question, and it's trickier than it looks. First off I'd like to point out that I've implemented a solution to this exact problem in the following repos:
var currentVal;

while(true) {
  currentVal = Foo.findOne(id).val; // yields

  if( Foo.update({_id: id, val: currentVal}, {$inc: {val: 1}}) > 0 ) {
    // Operation went as expected
    // (your code here, e.g. endRound)
    break;
  }
  else {
    // Race condition detected, try again
  }
} 

Should I know Java Concurrency & Thread Model etc. Comprehensively Before Using Concurrency in Clojure?


Tag : java , By : Mforg
Date : March 29 2020, 07:55 AM
I wish did fix the issue. No, you don't nead to learn such things to use Clojure's concurrency and parallelism features.
I'm never going to advocate not learning something, though in this case if you are learning these things at the same time you may be tempted to reach for locks in Clojure, which is almost always unnecessary, rather then doing it the idiomatic Clojure way.
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