synchronization

问题 According to the MS documentation Sync Framework Toolkit (https://code.msdn.microsoft.com/Sync-Framework-Toolkit-4dc10f0e) is a legacy open source product which MS no longer support: https://msdn.microsoft.com/en-us/library/jj839436(v=sql.110).aspx That's fine, but how about Microsoft Sync SDK which is not open source? Does it mean that open source part useless because server part can be removed by MS in the future? The question is does it mean that Sync Framework SDK (Server side library) is

问题 Is there an automatic way to synchronise a local git repository with a remote one, for backup? Basically the structure that I'm envisaging is this: "Master" repository on a central server User A's PC has a local clone of the master repo Backup server has a mirror of user A's repo User B's PC has a local clone of the master repo Backup server has a mirror of user B's repo Interaction between the users and the master is manual -- the users have to choose when to push or pull changes.

问题 On Windows/.NET, a named Mutex can be used to synchronise multiple processes. Unfortunately, Mono doesn't quite support this on Linux. Their release notes say that Linux doesn't support this Windows feature and it would be unreliable to emulate it. It seems best to avoid the proposed hack to enable it anyway. So what are suggested alternatives? I need to make my program safe to run concurrently, only a short section of it needs to be synchronised with other instances. The application

问题 We can not make constructor synchronized but can write synchronized this inside constructor. In what case such requirement will come ? I am amused. package com.simple; public class Test { public Test() { synchronized (this) { System.out.println("I am called ..."); } } public static void main(String[] args) { Test test=new Test(); System.out.println(""+test); } @Override public String toString() { return "Test []"; } } 回答1: Well, you could start a new thread within the constructor. It would be

问题 My question is related to the "Delta Download" thing as it was named in WWDC 2014 Advanced CloudKit. I'm trying to make syncronization for my Core Data app, which is iPhone only for now (think: there is only one device active). So, basically the app will store user records in the cloud from one same device, for the most cases for now. I have trouble with understanding custom zone feature which is based on CKFetchRecordChangesOperation aka Delta Download. As I got it right, we have

问题 I'm currently learning node.js and I see 2 examples for sync and asycn program (same one). I do understand the concept of a callback, but i'm trying to understand the benefit for the second (async) example, as it seems that the two of them are doing the exact same thing even though this difference... Can you please detail the reason why would the second example be better? I'll be happy to get an ever wider explanation that would help me understand the concept.. Thank you!! 1st example: var fs

问题 (Java synchronization problem)As my title, can I access a static variable in a synchronized block? Will it cause inconsistency ? Can anyone tell me the detail of the disadvantages or advantages of accessing a static variable synchronized block. 回答1: can I access a static variable in a synchronized block ? Yes, You can. Will it cause inconsistency ? Static means shared across all the instances of that Class in a JVM. Shared resources are not thread-safe .Hence Static variables are not thread

问题 I am developng an app with xamarin and azure serverless functions as backend for the app. I will be syncing map coordinates from the users in real time with a database on the cloud . i.e : taking coordinates from all users and then pushing the updated coordinates to all users at the same time, continuously so that all users can see live location of each other. So I have to call an azure function in continous loop in order to sync database with cloud. so it can check db after every, 4-5 secs.

问题 I have a requirement of synchronizing the file system remotely. I will be storing the content in the form of images in the file system. This storage will be available on cloud. Now how can I synchronize file system on cloud with destination local file system so that it becomes the exact replica and I can access the content locally. My technology stack is Java based. If someone can share any case study or provide any tips/tools, it will be a great help. Thanks in advance. 回答1: No case studies

问题 I'm writing a program that creates two threads. Each thread is responsible for reading through one text file, with one char on each line. The first is formatted like: h 0 h 0 ... The second is formatted like: 0 i 0 i 0 i Sometimes there can be multiple letters after each other, or multiple zeros after each other. However, the one certainty is that if there is a letter on one line of one file, the corresponding line of the second file will have a 0, and vice versa. The threads are supposed to