centrifuge | Migrated to Go language , see https | Websocket library
kandi X-RAY | centrifuge Summary
kandi X-RAY | centrifuge Summary
In a few words: clients (users of your web application/site) connect to Centrifuge from browser, after connecting clients subscribe on channels. Every message which was published into that channel will be delivered to all clients which are currently subscribed on that channel. To connect to Centrifuge from browser pure [Websockets] or [SockJS] library can be used. So it works in both modern and old browsers (IE 7 supported). Centrifuge has [javascript client] with simple API. Backend is built on top of [Tornado] - fast and mature asynchronous web server which can handle thousands of simultaneous connections. Centrifuge scales using [Redis] PUB/SUB capabilities. Single full-featured instance of Centrifuge run by default without extra dependency on Redis. There are tons of examples in internet about how to add real-time events on your site. But very few of them provide complete, scalable, full-featured, ready to deploy solution. Centrifuge aims to be such a solution with simplicity in mind.
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Community Discussions
Trending Discussions on centrifuge
QUESTION
i got a problem with PHPIDS on a PHP 8.1 Server.
Here the Errors:
...ANSWER
Answered 2022-Feb-13 at 09:39As of PHP 8.1, you have to fix the return type of the functions count()
and getIterator()
to match with interfaces.
public count(): int
(see Countable)public getIterator(): Traversable
(see IteratorAggregate)
QUESTION
I am studying the batchdes.lst file for MINLP model batchdes in GAMS library. The objective function is
Defining objective function obj.. cost =g= sum(j, alpha(j)*(exp(n(j) + beta(j)*v(j)))); However, in the list of equations in the .lst file is presented as ---- obj =G= objective function definition
obj.. - (25141.1498186984)*v(mixer) - (64131.2769053431)*v(reactor) - (49066.7923833869)*v(centrifuge) - (41901.9163644973)*n(mixer) - (106885.461508905)*n(reactor) - (81777.9873056449)*n(centrifuge) + cost =G= 0 ; (LHS = -230565.365179047, INFES = 230565.365179047 ****)
What kind of operation has been applied here? How the exp() translated? Is this a feature of GAMS or the Solver selected?
I implemented the same model to Pyomo and solve with the same solver from GAMS, however the Obj does not look the same in the .lst file.
Thanks!
...ANSWER
Answered 2021-Apr-21 at 09:36What you see here are the partial derivatives of each variable evaluated at their current level values. This comes from the GAMS documentation:
Nonlinear equations are treated differently. If the coefficient of a variable in the equation listing is enclosed in parentheses, then the corresponding constraint is nonlinear, and the value of the coefficient depends on the activity levels of one or more of the variables. The listing is not algebraic, but shows the partial derivative of each variable evaluated at their current level values.
QUESTION
Using jqGrid js v5.5.0, the filter as you type functionality is not working for some fields.
Typing into the Title field causes the column to display only values that match what has been entered.
Typing a "2" into the Serial filter results in nothing being displayed.
The expected result is for the serial column to behave exactly as the title column and show partial matches.
All data is preloaded into the grid.
Here's the code and a Fiddle demonstrating the issue.
...ANSWER
Answered 2020-Oct-07 at 07:33The problem you have is in definition in colModel and especially the index property.
This property can't have value with space. Moreover the index property when defined is used in searching. Your definition is:
QUESTION
I am using Centrifugo
websocket server. I need to connect to Centrifugo
and store connection instance
for future usage from from multiple components
.
Will it be the good way to create this kind of export from ./socket.js
?
Will centrifuge.connect()
and centrifuge.setToken('')
be executed if I gonna import ./socket.js
module muitiple times?
./socket.js
ANSWER
Answered 2020-Aug-16 at 14:43If you want to use a single instance only, it's better to import it in one place only. Best to import in the parent component and pass it as props to the children.
So your app.jsx
would become:
QUESTION
I know this error have come to many people and I have tried different solutions and none of them worked.
I am using aws eb cli.
I am using following command eb deploy
to deploy my application to server.
Following are the configuration for my Django.
under .ebextensions
directory, I have following 2 files:
1: 01_packages.config
...ANSWER
Answered 2020-Feb-24 at 19:28Try running
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Install centrifuge
You can use centrifuge like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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