throttler | Load balancer between nodes | Load Balancing library
kandi X-RAY | throttler Summary
kandi X-RAY | throttler Summary
Throttler is the load balancer between nodes.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Returns index of given collection .
- Sorts a collection .
- Calculates the difference between two numbers .
- Pick a node from collection .
- Balance the cluster .
- Checks if the frequency of the frequency of the frequency of a random frequency .
throttler Key Features
throttler Examples and Code Snippets
Community Discussions
Trending Discussions on throttler
QUESTION
I'm using Google Analytics and that service has limit of 10 concurrent requests. I had to limit my API somehow, so I decided to use a semaphore, but it seems it doesn't work. All requests are triggered simultaneously. I can't find the problem in my code.
...ANSWER
Answered 2021-Jun-07 at 21:38All requests are triggered simultaneously.
Let's take a look here
QUESTION
The first function is designed to enable linq to execute lambda functions safely in parallel (even the async void ones).
So you can do collection.AsParallel().ForAllASync(async x => await x.Action).
The second function is designed to enable you to combine and execute multiple IAsyncEnumerables in parallel and return their results as quick as possible.
I have the following code:
...ANSWER
Answered 2021-Apr-22 at 01:10The type (IAsyncEnumerator, bool)
is a shorthand of the ValueTuple, bool>
type, which is a value type. This means that on assignement it's not passed by reference, and instead it's copied. So this lambda does not work as intended:
QUESTION
The first function is designed to enable linq to execute lambda functions safely in parallel (even the async void ones).
So you can do collection.AsParallel().ForAllASync(async x => await x.Action).
The second function is designed to enable you to combine and execute multiple IAsyncEnumerables in parallel and return their results as quick as possible.
I have the following code:
...ANSWER
Answered 2021-Apr-21 at 15:21This is a classic case of deferred execution. Every time you invoke an evaluating method on a non-materialized IEnumerable<>
, it does the work to materialize the IEnumerable. In this case that's re-invoking your selector and creating new instances of the tasks that await the GetAsyncEnumerator calls.
With the call to .ToList()
you materialize the IEnumerable. Without it, materialization occurs with with every call to .Any()
, the call to ForAllAsync()
, and at your foreach
loop.
The same behavior can be reproduced minimally like this:
QUESTION
I'm trying to put my nestjs api into Google App Engine but I still have an error. I have created my google cloud project first with the google sdk, edited my code as follow:
main.ts:
...ANSWER
Answered 2021-Apr-15 at 23:22Take a look on this other post:
It seems you need to install and use npm as:
@nestjs/cli
instead of just nest
QUESTION
I have a class that has a member variable that wraps a std time_point in an atomic. I'm having a hard time getting older compilers happy with it. I initially had issues with versions of GCC earlier than 10 accepting it. I addressed this via explicitly initializing it.
I thought that made all the compilers happy. But once my code got into production, I faced an issue in the more thorough CI (in comparison to the PR CI) with older clang compilers. The project is Apache Traffic Server, so it is open sourced, if viewing it is interesting. Here is the code:
https://github.com/apache/trafficserver/blob/master/include/tscore/Throttler.h#L117
Here is a minimal example that demonstrates the problem:
...ANSWER
Answered 2021-Mar-30 at 02:06As a workaround, you can make TimePoint
a subclass (with a noexcept
default constructor) instead of a typedef.
QUESTION
I am learning asynchronous programming from scratch and have to solve one problem. Application which I am developing has to download data in loop per ID (around 800 loop pass). Each Loop pass get 10 to 500 rows from database and generating one txt file with rows. I'd like to do this asynchronously. Of course do not want to generate 800 reports at same time (800 sql queries) but would like to divide it to some batches. I use SemaphoreSlim
:
ANSWER
Answered 2021-Mar-23 at 15:07You can do that easily with an ActionBlock Class from Dataflow (Task Parallel Library):
QUESTION
I have an ASP.NET 5 Web API application which contains a method that takes objects from a List
and makes HTTP requests to a server, 5 at a time, until all requests have completed. This is accomplished using a SemaphoreSlim
, a List()
, and awaiting on Task.WhenAll()
, similar to the example snippet below:
ANSWER
Answered 2021-Feb-26 at 20:34If I wanted to limit the total number of Tasks that are being executed at any given time to say 100, is it possible to accomplish this?
What you are looking for is to limit the MaximumConcurrencyLevel
of what's called the Task Scheduler
. You can create your own task scheduler that regulates the MaximumCongruencyLevel
of the tasks it manages. I would recommend implementing a queue-like object that tracks incoming requests and currently working requests and waits for the current requests to finish before consuming more. The below information may still be relevant.
The task scheduler is in charge of how Tasks are prioritized, and in charge of tracking the tasks and ensuring that their work is completed, at least eventually.
The way it does this is actually very similar to what you mentioned, in general the way the Task Scheduler handles tasks is in a FIFO (First in first out) model very similar to how a ConcurrentQueue
works (at least starting in .NET 4).
Would the framework automatically prevent too many tasks from being executed?
By default the TaskScheduler that is created with most applications appears to default to a MaximumConcurrencyLevel
of int.MaxValue
. So theoretically yes.
The fact that there practically is no limit to the amount of tasks(at least with the default TaskScheduler
) might not be that big of a deal for your case scenario.
Tasks are separated into two types, at least when it comes to how they are assigned to the available thread pools. They're separated into Local and Global queues.
Without going too far into detail, the way it works is if a task creates other tasks, those new tasks are part of the parent tasks queue (a local queue). Tasks spawned by a parent task are limited to the parent's thread pool.(Unless the task scheduler takes it upon itself to move queues around)
If a task isn't created by another task, it's a top-level task and is placed into the Global Queue. These would normally be assigned their own thread(if available) and if one isn't available it's treated in a FIFO model, as mentioned above, until it's work can be completed.
This is important because although you can limit the amount of concurrency that happens with the TaskScheduler
, it may not necessarily be important - if for say you have a top-level task that's marked as long running and is in-charge of processing your incoming requests. This would be helpful since all the tasks spawned by this top-level task will be part of that task's local queue and therefor won't spam all your available threads in your thread pool.
QUESTION
My function named status sending information about products that are stored in Firebase Realtime Database. When user ask my bot for status then Firebase function get data from DB and then send back Telegram message for every of product that the user is assigned. For some users this can take some time even 2 minutes.
When 1st user asks bot for status and bot function run for the first time everything is fine.
BUT when 2nd user ask for status during first call of bot function (when function still running for 1st user) first call run start over and after first call is done finally second call are handled.
When 3rd user calls function when old calls are not finished, everything stacking on and finally everything loops until all calls of function are over. Because bot has almost 2000 active users this above problem runs into "infinite" loop because constantly some of users calls "status" for themselves.
This situation causes that users getting almost infinite numbers of messages.
I'm using JavaScript & Node 12 on Firebase.
...ANSWER
Answered 2021-Feb-27 at 20:25OK Finally I found cause ^^
I'm missed process.once in my code, because of that function was executed more than one time.
QUESTION
I'm learning Akka and have written below code to throttle the number of messages sent to the TradeAction
actor. A max of 3 messages is sent ever second. Can the throttler be amended such that the time between each message is set ? For example, between message1 and message2 delay by 2 seconds, between message2 and message3 delay by 1 second.
ANSWER
Answered 2021-Jan-30 at 16:33You can accomplish this with delayWith
, which allows a (potentially stateful) method to define how long to delay this element (without re-ordering elements), for example:
QUESTION
I'm experimenting with the following code where images flip through in a canvas.
If I put the canvas, let's say at the middle of my page, I was wondering if there's a way to only make the images flip through once the viewer gets to that specific section of the page.
Right now, from the looks of it, the images start flipping through right at the top of the page, immediately when you scroll down. By the time you get to the middle of the page where the actual canvas is, the images have already finished flipping through, and it's stopped on the last frame.
I assume I have to set the function to only trigger after the user scrolls to a specific number of pixels on the Y-axis? What's the best way to do so?
Please see code below.
Thanks!
...ANSWER
Answered 2020-Sep-27 at 09:28You can actually start make the images flip through once the viewer gets to that specific section of the page by using The Intersection Observer API
So you have to detect when your element in the the viewport, the canvas in this case.
To do this you have multiple ways.
By using Observer API
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install throttler
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page