queue | A task queue library for Go | Job Scheduling library

 by   LyricTian Go Version: v1.2.0 License: MIT

kandi X-RAY | queue Summary

kandi X-RAY | queue Summary

queue is a Go library typically used in Data Processing, Job Scheduling applications. queue has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A task queue for mitigating server pressure in high concurrency situations and improving task processing.
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            kandi-support Support

              queue has a low active ecosystem.
              It has 21 star(s) with 19 fork(s). There are 5 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 0 open issues and 1 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of queue is v1.2.0

            kandi-Quality Quality

              queue has 0 bugs and 0 code smells.

            kandi-Security Security

              queue has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              queue code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              queue is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              queue releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed queue and discovered the below as its top functions. This is intended to give you an instant insight into queue implemented functionality, and help decide if they suit your requirements.
            • Terminate stops the ListQueue .
            • NewListQueueWithMaxLen creates a new ListQueue with maxLen .
            • NewQueue returns a new Queue .
            • newWorker creates a new worker
            • NewSyncJob create a new synchronisation job
            • Run starts the internal queue .
            • RunListQueue runs the list queue .
            • Push a job to the internal queue
            • NewJob returns a new JOB
            • NewListQueue creates a new ListQueue with the specified number of threads .
            Get all kandi verified functions for this library.

            queue Key Features

            No Key Features are available at this moment for queue.

            queue Examples and Code Snippets

            queue,Usage
            Godot img1Lines of Code : 22dot img1License : Permissive (MIT)
            copy iconCopy
            package main
            
            import (
            	"fmt"
            
            	"github.com/LyricTian/queue"
            )
            
            func main() {
            	q := queue.NewQueue(10, 100)
            	q.Run()
            
            	defer q.Terminate()
            
            	job := queue.NewJob("hello", func(v interface{}) {
            		fmt.Printf("%s,world \n", v)
            	})
            	q.Push(job)
            
            	// outpu  
            queue,Get
            Godot img2Lines of Code : 1dot img2License : Permissive (MIT)
            copy iconCopy
            go get -u -v github.com/LyricTian/queue
              
            queue,MIT License
            Godot img3Lines of Code : 1dot img3License : Permissive (MIT)
            copy iconCopy
                Copyright (c) 2017 Lyric
              

            Community Discussions

            QUESTION

            Python/Docker ImportError: cannot import name 'json' from itsdangerous
            Asked 2022-Mar-31 at 12:49

            I am trying to get a Flask and Docker application to work but when I try and run it using my docker-compose up command in my Visual Studio terminal, it gives me an ImportError called ImportError: cannot import name 'json' from itsdangerous. I have tried to look for possible solutions to this problem but as of right now there are not many on here or anywhere else. The only two solutions I could find are to change the current installation of MarkupSafe and itsdangerous to a higher version: https://serverfault.com/questions/1094062/from-itsdangerous-import-json-as-json-importerror-cannot-import-name-json-fr and another one on GitHub that tells me to essentially change the MarkUpSafe and itsdangerous installation again https://github.com/aws/aws-sam-cli/issues/3661, I have also tried to make a virtual environment named veganetworkscriptenv to install the packages but that has also failed as well. I am currently using Flask 2.0.0 and Docker 5.0.0 and the error occurs on line eight in vegamain.py.

            Here is the full ImportError that I get when I try and run the program:

            ...

            ANSWER

            Answered 2022-Feb-20 at 12:31

            I was facing the same issue while running docker containers with flask.

            I downgraded Flask to 1.1.4 and markupsafe to 2.0.1 which solved my issue.

            Check this for reference.

            Source https://stackoverflow.com/questions/71189819

            QUESTION

            git gc: error: Could not read 0000000000000000000000000000000000000000
            Asked 2022-Mar-28 at 14:18
            git gc
            error: Could not read 0000000000000000000000000000000000000000
            Enumerating objects: 147323, done.
            Counting objects: 100% (147323/147323), done.
            Delta compression using up to 4 threads
            Compressing objects: 100% (36046/36046), done.
            Writing objects: 100% (147323/147323), done.
            Total 147323 (delta 91195), reused 147323 (delta 91195), pack-reused 0
            
            ...

            ANSWER

            Answered 2022-Mar-28 at 14:18

            This error is harmless in the sense that it does not indicate a broken repository. It is a bug that was introduced in Git 2.35 and that should be fixed in later releases.

            The worst that can happen is that git gc does not prune all objects that are referenced from reflogs. The error is triggered by an invocation of git reflog expire --all that git gc does behind the scenes.

            The trigger are empty reflog files in the .git/logs directory structure that were left behind after a branch was deleted. As a workaround you can remove these empty files. This command lets you find them and check their size:

            Source https://stackoverflow.com/questions/71364717

            QUESTION

            Manage access to shared resource with Project Reactor
            Asked 2022-Feb-23 at 10:26

            How to manage access to shared resources using Project Reactor?

            Given an imaginary critical component that can execute only operation at the time (file store, expensive remote service, etc), how could one orchestrate in reactive manner access to this component if there are multiple points of access to this component (multiple API methods, subscribers...)? If the resource is free to execute the operation it should execute it right away, if some other operation is already in progress, add my operation to the queue and complete my Mono once my operation is completed.

            My idea is to add tasks to the flux queue which executes tasks one by one and return a Mono which will be complete once the task in the queue is completed, without blocking.

            ...

            ANSWER

            Answered 2022-Feb-23 at 10:26

            this looks like a simplified version of what the reactor-pool does, in essence. have you considered using that with eg. a maximum size of 1?

            https://github.com/reactor/reactor-pool/

            https://projectreactor.io/docs/pool/0.2.7/api/reactor/pool/Pool.html

            The pool is probably overkill, because it has the overhead of having to deal with multiple resources on top of multiple competing borrowers like in your case, but maybe it could provide some inspiration for you to go further.

            Source https://stackoverflow.com/questions/70529490

            QUESTION

            Spring Boot WebClient stops sending requests
            Asked 2022-Feb-18 at 14:42

            I am running a Spring Boot app that uses WebClient for both non-blocking and blocking HTTP requests. After the app has run for some time, all outgoing HTTP requests seem to get stuck.

            WebClient is used to send requests to multiple hosts, but as an example, here is how it is initialized and used to send requests to Telegram:

            WebClientConfig:

            ...

            ANSWER

            Answered 2021-Dec-20 at 14:25

            I would propose to take a look in the RateLimiter direction. Maybe it does not work as expected, depending on the number of requests your application does over time. From the Javadoc for Ratelimiter: "It is important to note that the number of permits requested never affects the throttling of the request itself ... but it affects the throttling of the next request. I.e., if an expensive task arrives at an idle RateLimiter, it will be granted immediately, but it is the next request that will experience extra throttling, thus paying for the cost of the expensive task." Also helpful might be this discussion: github or github

            I could imaginge there is some throttling adding up or other effect in the RateLimiter, i would try to play around with it and make sure this thing really works the way you want. Alternatively, consider using Spring @Scheduled to read from your queue. You might want to spice it up using embedded JMS for further goodies (message persistence etc).

            Source https://stackoverflow.com/questions/70357582

            QUESTION

            How to use Queue with threading properly
            Asked 2021-Dec-27 at 07:53

            I am new to queue & threads kindly help with the below code , here I am trying to execute the function hd , I need to run the function multiple times but only after a single run has been completed

            ...

            ANSWER

            Answered 2021-Dec-27 at 07:53

            You can use a Semaphore for your purposes

            A semaphore manages an internal counter which is decremented by each acquire() call and incremented by each release() call. The counter can never go below zero; when acquire() finds that it is zero, it blocks, waiting until some other thread calls release().

            A default value of Semaphore is 1,

            class threading.Semaphore(value=1)

            so only one thread would be active at once:

            Source https://stackoverflow.com/questions/70492568

            QUESTION

            Deadlock on insert/select
            Asked 2021-Dec-26 at 12:54

            Ok, I'm totally lost on deadlock issue. I just don't know how to solve this.

            I have these three tables (I have removed not important columns):

            ...

            ANSWER

            Answered 2021-Dec-26 at 12:54

            You are better off avoiding serializable isolation level. The way the serializable guarantee is provided is often deadlock prone.

            If you can't alter your stored procs to use more targeted locking hints that guarantee the results you require at a lesser isolation level then you can prevent this particular deadlock scenario shown by ensuring that all locks are taken out on ServiceChange first before any are taken out on ServiceChangeParameter.

            One way of doing this would be to introduce a table variable in spGetManageServicesRequest and materialize the results of

            Source https://stackoverflow.com/questions/70377745

            QUESTION

            Callback function executing in the call stack even when it's not empty
            Asked 2021-Dec-12 at 02:17

            When the click event is fired from the mouse, it behaves as expected:

            First the listener 1 is pushed into the stack where it queues promise 1 in Microtask Queue(or Job Queue). When listener 1 is popped off, the stack becomes empty. And the promise 1 callback is executed before the listener 2(which is waiting in the Task Queue(or Callback Queue). After promise 1 callback is popped off, the listener 2 is pushed into the stack. So the output is :

            Listener 1 Microtask 1 Listener 2 Microtask 2

            However when the click is triggered via JavaScript code, it behaves differently:

            The callback is pushed into the stack even before the click() function is completed (i.e. call stack is not empty). The output here is :

            Listener 1 Listener 2 Microtask 1 Microtask 2

            Here's the code:

            ...

            ANSWER

            Answered 2021-Dec-11 at 19:25

            As long as the is running, the .then() won't be executed.

            This snippet shows the difference in the execution order a bit better:

            Source https://stackoverflow.com/questions/70317322

            QUESTION

            No analytics cookies is set upon a consent was updated
            Asked 2021-Dec-11 at 17:17

            I am using the Google Tag Manager with a single tag referencing a default Google Analytics script. My solution is based on the information from these resources:

            The code is simple (commit):

            index.html: define gtag() and set denied as a default for all storages

            ...

            ANSWER

            Answered 2021-Dec-08 at 10:11

            From your screenshot, gtm.js is executed before the update of the consent mode so the pageview continues to be sent to Google Analytics as denied.

            The update must take place before gtm.js

            Source https://stackoverflow.com/questions/70266113

            QUESTION

            React: accessing internal operation queue of React
            Asked 2021-Oct-08 at 12:21

            React collects operations(like DOM operations such 'ADD','REPLACE','REMOVE' and more) so they could execute them in batch in one shot at the end of each render.

            for example, setState call inside React component is scheduled to the end of the construction of this React tree by adding this operation to the operation queue. then react will go over this queue and will decide what changes need to be made to the DOM.

            React will decide whether or not to call another render based on whether or not the operation queue is empty or not.

            more info on this awesome tutorial which summarizes the basics of how React works internally.

            I need access to this queue to decide whether or not the current render was the last for a very custom React component. (YES maybe I can avoid it but currently, this is my requirement)
            the access must be from inside of this component.

            my check will be called from the lastest useEffect which is after the render ends and the DOM was updated and is the latest lifecycle event, so if the operation queue is empty there will be no more renders for sure. (here nice article explains and demonstrates the order of hook calls)

            couldn't find any public API, but a workaround would also be acceptable. (forking and editing React is not a workaround)

            this src file is probably the main logic to this queue. and this is the type of the actual queue. however this is the source code and this queue is not exported in the built versions of react(neither development or production build)

            so, is there a way to access the internal operation queue of React?

            ...

            ANSWER

            Answered 2021-Oct-08 at 12:21
            EDIT - Warning

            this is for educational purposes only - do not use it on production! this approach is not safe based on React core team member - I've already asked. it could be safe if you plan to use a fixed version of React without upgrading later.

            ####### END OF EDIT #######

            SOLVED!

            so after many many hours digging into React codebase I finally wrote a hook that tells if any update is currently scheduled.

            Note: would work for function components only, and this hook is not well tested.

            you can see some internal state of React by the undocumented __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED property. this prop holds ReactCurrentOwner which is basically a reference to the current component that is being constructed.

            Source https://stackoverflow.com/questions/68930011

            QUESTION

            Django and a Database with write-Instance + Multiple Read Replicas -- running Celery jobs
            Asked 2021-Sep-14 at 11:38

            I have a django app running in production. Its database has main write instance and a few read replicas. I use DATABASE_ROUTERS to route between the write instance and the read replicas based on whether I need to read or write.

            I encountered a situation where I have to do some async processing on an object due to a user request. The order of actions is:

            1. User submits a request via HTTPS/REST.
            2. The view creates an Object and saves it to the DB.
            3. Trigger a celery job to process the object outside of the request-response cycle and passing the object ID to it.
            4. Sending an OK response to the request.

            Now, the celery job may kick in in 10 ms or 10 minutes depending on the queue. When it finally tuns, the celery job first tries to load the object based on the ID provided. Initially I had issues doing a my_obj = MyModel.objects.get(pk=given_id) because the read replica would be used at this point, if the queue is empty and the celery job runs immediately after being triggered, the object may have not propagated to the read-replicas yet.

            I resolved that issue by replacing my_obj = MyModel.objects.get(pk=given_id) with my_obj = MyModel.objects.using('default').get(pk=given_id) -- this ensures the object is read from my write-db-instance and is always available.

            however, now I have another issue I did not anticipate.

            calling my_obj.certain_many_to_many_objects.all() triggers another call to the database as the ORM is lazy. That call IS being done on the read-replica. I was hoping it would stick to the database I defined with using but that's not the case. Is there a way to force all sub-element objects to use the same write-db-instance?

            ...

            ANSWER

            Answered 2021-Sep-08 at 07:19

            Model managers and the QuerySet API reference can be used to change the database replica There is a way to specify which DB connection to use with Django. For each model manager, Django's BaseManager class uses a private property self._db to hold the DB connection, you may specify another value as well.

            Source https://stackoverflow.com/questions/69034689

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install queue

            You can download it from GitHub.

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            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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