queue

问题 I am trying to queue up items from an Azure Service Bus so I can process them in bulk. I am aware that the Azure Service Bus has a ReceiveBatch() but it seems problematic for the following reasons: I can only get a max of 256 messages at a time and even this then can be random based on message size. Even if I peek to see how many messages are waiting I don't know how many RequestBatch calls to make because I don't know how many messages each call will give me back. Since messages will keep

问题 I am using the same UDP socket for sending and receiving data. I am wondering if packet queuing for DGRAM sockets is already present, or do we have to handle it separately. If the user code has to handle queueing, how is it done? Do we have separate threads to recvfrom for the socket and put the packet in the reciver_queue and to sendto from another sending_queue? An example code will be absolutely awesome. Thanks for your help. 回答1: There is a packet queue. However when the packet queue is

问题 Is there any way to get the queued job from the job ID in Laravel? While adding the job to the queue, I store the job ID. Later at some point of time (there is a delay to process the job in the queue), I want to remove the job from the queue. If I can get the job on the queue using the job ID, I can use delete() method to remove it. 回答1: I use this code for laravel 5.5 : use Illuminate\Contracts\Bus\Dispatcher; $job = ( new JOB_CLASS() )->onQueue('QUEUE_NAME')->delay('DELAY'); $id = app

问题 What is the most proper way to sending email of minimal 1000 or more in PHP? Any reliable email queuing technique that is capable to handle that? ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 回答1: You could just insert your emails into a Mail Queue database table, and have a separate process check the queue and batch send a certain number at once. 回答2: There's a tested solution for that: PEAR Mail_Queue Works fine for me. 回答3: as mercutio suggested, i would insert a new record into a mail queue table

问题 I don't immediately care about fifo or filo options, but it might be nice in the future.. What I'm looking for a is a nice fast simple way to store (at most a gig of data or tens of millions of entries) on disk that can be get and put by multiple processes. The entries are just simple 40 byte strings, not python objects. Don't really need all the functionality of shelve. I've seen this http://code.activestate.com/lists/python-list/310105/ It looks simple. It needs to be upgraded to the new

问题 As you know from the title, I'm trying to use PriorityQueue with multiprocessing. More precisely, I wanted to make shared PriorityQueue, wrote some code and it doesn't run as I expected. Look at the code: import time from multiprocessing import Process, Lock from Queue import PriorityQueue def worker(queue): lock = Lock() with lock: for i in range(100): queue.put(i) print "worker", queue.qsize() pr_queue = PriorityQueue() worker_process = Process(target = worker, args = (pr_queue,)) worker

问题 I want to store in a queue, datastructure does not matter, only the elements that I have inserted within say last 5 minutes from current time. Anything older should get removed - so that any time I get the size of the queue it will give count of the objects inserted in last 5 minutes. Basically all I have to know is how many times my app has made a http call to a sever in last 5 minutes before making the next call. If anyone knows of some existing library that may have this implementation

问题 I can find many examples regarding wait_queue_head . It works as a signal, create a wait_queue_head , someone can sleep using it until someother kicks it up. But I can not find a good example of using wait_queue itself, supposedly very related to it. Could someone gives example, or under the hood of them? 回答1: From Linux Device Drivers: The wait_queue_head_t type is a fairly simple structure, defined in <linux/wait.h> . It contains only a lock variable and a linked list of sleeping processes.

问题 I am trying to use The Queue in python which will be multithreaded. I just wanted to know the approach I am using is correct or not. And if I am doing something redundant or If there is a better approach that I should use. I am trying to get new requests from a table and schedule them using some logic to perform some operation like running a query. So here from the main thread I spawn a separate thread for the queue. if __name__=='__main__': request_queue = SetQueue(maxsize=-1) worker =

问题 I want to get the next item in queue but I don't want to dequeue it. Is it possible in Python's Priority Queue? From the docs, I don't see how can it be done 回答1: When you get item form the queue as per theory it will remove from the queue. You have to write your own function which will give you last element of PriorityQueue. You can create a peek function by inherit the priorityqueue. 回答2: If a is a PriorityQueue object, You can use a.queue[0] to get the next item: from Queue import