lock | 分布式锁:redis和zookeeper实现 | Messaging library

 by   2YSP Java Version: Current License: No License

kandi X-RAY | lock Summary

kandi X-RAY | lock Summary

lock is a Java library typically used in Messaging, Kafka, RabbitMQ applications. lock has no bugs, it has no vulnerabilities and it has low support. However lock build file is not available. You can download it from GitHub.

lock
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            kandi-support Support

              lock has a low active ecosystem.
              It has 5 star(s) with 9 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              lock has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of lock is current.

            kandi-Quality Quality

              lock has no bugs reported.

            kandi-Security Security

              lock has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              lock does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              lock releases are not available. You will need to build from source code and install.
              lock has no build file. You will be need to create the build yourself to build the component from source.

            Top functions reviewed by kandi - BETA

            kandi has reviewed lock and discovered the below as its top functions. This is intended to give you an instant insight into lock implemented functionality, and help decide if they suit your requirements.
            • Lock a key
            • Check if lock is reentrant
            • Wrap the lock key
            • Set nx value
            • Set redis template
            • Sets the serializer
            • Around lock point
            • Returns the unique key for the join point
            • Start the Redis lock application
            • The client
            • Release lock with script
            • Unlock a key
            • Request hello
            • Initialize Redis script
            • Require a lock
            • Generate lock with Lua script
            • Require lock with a lock
            • Release lock
            • The entry point
            Get all kandi verified functions for this library.

            lock Key Features

            No Key Features are available at this moment for lock.

            lock Examples and Code Snippets

            No Code Snippets are available at this moment for lock.

            Community Discussions

            QUESTION

            Insert to specific Sheet Name based on form input data
            Asked 2021-Jun-16 at 03:23

            I wanted to insert my data to a specific sheet name based on form input value of "svdate":

            ...

            ANSWER

            Answered 2021-Jun-16 at 02:12

            I thought that in your situation, it is required to retrieve 6/17 from 06/17/2021. For this, how about the following modification?

            Modified script:

            In this case, please modify doPost as follows.

            From:

            Source https://stackoverflow.com/questions/67995123

            QUESTION

            Does flock maintain a queue when there are multiple files waiting for a lock?
            Asked 2021-Jun-16 at 02:07

            Would be great if someone can help me understand how flock functions. Lets says I have the below scenario:

            ...

            ANSWER

            Answered 2021-Jun-16 at 02:07

            I tried testing this scenarios with a working example script and I found that the waiting jobs are processed in a random manner.

            Source https://stackoverflow.com/questions/67943132

            QUESTION

            Concurrent Counter Struct with Type Argument in Rust
            Asked 2021-Jun-15 at 23:55

            I was following along with this tutorial on creating a concurrent counter struct for a usize value: ConcurrentCounter. As I understand it, this wrapper struct allows us to mutate our usize value, with more concise syntax, for example:my_counter.increment(1) vs. my_counter.lock().unwrap().increment(1).

            Now in this tutorial our value is of type usize, but what if we wanted to use a f32, i32, or u32 value instead?

            I thought that I could do this with generic type arguments:

            ...

            ANSWER

            Answered 2021-Jun-15 at 23:55

            I haven't come across such a ConcurrentCounter library, but crates.io is huge, maybe you find something. However, if you are mostly concerned with primitives such as i32, there is a better alternative call: Atomics, definitely worth checking out.

            Nevertheless, your approach of generalizing the ConcurrentCounter is going in a good direction. In the context of operation overloading, std::ops is worth a look. Specifically, you need Add, Sub, and Mul, respectively. Also, you need a Copy bound (alternatively, a Clone would also do). So you were pretty close:

            Source https://stackoverflow.com/questions/67994469

            QUESTION

            npm install error ENOTEMPTY: directory not empty,
            Asked 2021-Jun-15 at 18:59

            I encountered the following error when I tried to install some new packages using npm install. It happened when I did npm install a-new-package --save and then delete package-lock.json file afterwards to refresh everything.

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:59

            May be deleting node_modules folder and package-lock.json file and then reinstalling npm would resolve your issue.

            So, consider the following commands to apply the above operations:

            Source https://stackoverflow.com/questions/67991537

            QUESTION

            How do I use a Transaction in a Reactive Flow in Spring Integration?
            Asked 2021-Jun-15 at 18:32

            I am querying a database for an item using R2DBC and Spring Integration. I want to extend the transaction boundary a bit to include a handler - if the handler fails I want to roll back the database operation. But I'm having difficulty even establishing transactionality explicitly in my integration flow. The flow is defined as

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:32

            Well, it's indeed not possible that declarative way since we don't have hook for injecting to the reactive type in the middle on that level.

            Try to look into a TransactionalOperator and its usage from the Java DSL's fluxTransform():

            Source https://stackoverflow.com/questions/67991494

            QUESTION

            How to thread a generator
            Asked 2021-Jun-15 at 16:02

            I have a generator object, that loads quite big amount of data and hogs the I/O of the system. The data is too big to fit into memory all at once, hence the use of generator. And I have a consumer that all of the CPU to process the data yielded by generator. It does not consume much of other resources. Is it possible to interleave these tasks using threads?

            For example I'd guess it is possible to run the simplified code below in 11 seconds.

            ...

            ANSWER

            Answered 2021-Jun-15 at 16:02

            Send your data to separate processes. I used concurrent.futures because I like the simple interface.

            This runs in about 11 seconds on my computer.

            Source https://stackoverflow.com/questions/67958976

            QUESTION

            XCUITest - interacting with notification from lock screen
            Asked 2021-Jun-15 at 14:49

            I am attempting to write a a UI test that taps on a delivered local notification after the device has been locked. I have been successful so far in tapping on a notification that was delivered on the springboard (when the device is already unlocked) but not from the lock screen. Does anyone know if this is possible?

            Please note that this is different from questions such as this one, which merely hit the home button to leave the app under test and wait for the notification.

            Here is the relevant portion of my test code:

            ...

            ANSWER

            Answered 2021-Jun-15 at 14:49

            I have similar issues, and I was able to resolve them by Adding a press lock Again. Here is the working code. I am using https://github.com/pterodactyl for Notifications. I wrote this code a couple of years back and still passing.

            I do the same thing twice and able to validate notifications. Once the device is locked. You will see a black screen like it is turned off, and the second time when you will send the same code, it will turn on the device, and you can get notifications element for tests

            // Lock the screen
            XCUIDevice.shared.perform(NSSelectorFromString("pressLockButton"))
            sleep(1)

            // same command second time ,it will wake the screen
            XCUIDevice.shared.perform(NSSelectorFromString("pressLockButton"))

            Source https://stackoverflow.com/questions/67975534

            QUESTION

            How is this code snippet an example of incorrect synchronization?
            Asked 2021-Jun-15 at 12:46

            I am trying to understand the example with incorrect sync code from The Go Memory Model.

            Double-checked locking is an attempt to avoid the overhead of synchronization. For example, the twoprint program might be incorrectly written as:

            ...

            ANSWER

            Answered 2021-Jun-14 at 19:18

            According to the Go memory model:

            https://golang.org/ref/mem

            There are no guarantees that one goroutine will see the operations performed by another goroutine unless there is an explicit synchronization between the two using channels, mutex. etc.

            In your example: the fact that a goroutines sees done=true does not imply it will see a set. This is only guaranteed if there is explicit synchronization between the goroutines.

            The sync.Once probably offers such synchronization, so that's why you have not observed this behavior. There is still a memory race, and on a different platform with a different implementation of sync.Once, things may change.

            Source https://stackoverflow.com/questions/67975948

            QUESTION

            How to properly use Executer In Room Android
            Asked 2021-Jun-15 at 11:44

            So I am relatively new to programming, and I have been working on this task app, where I want to save the data such as task name and more, given by the user. I am trying to accomplish this using Room. Now, initially, when I tried to do it, the app would crash since I was doing everything on the main thread probably. So, after a little research, I came to AsyncTask, but that is outdated. Now finally I have come across the Executer. I created a class for it, but I am a little unsure as to how I can implement it in my app. This is what I did :

            Entity Class :

            ...

            ANSWER

            Answered 2021-Jun-14 at 12:03

            First make a Repository class and make an instance of your DAO

            Source https://stackoverflow.com/questions/67966494

            QUESTION

            npm run start won't find node_modules folder on different OS aside Windows
            Asked 2021-Jun-15 at 10:13

            I made a node JS application using Hapi on Windows 10. After testing it locally, the script start would run without any problem. here is the start script inside the package.json

            ...

            ANSWER

            Answered 2021-Jun-15 at 10:13

            You need to quote the *: nodemon -e "*" src/server.js.

            Unlike Windows' cmd, Linux shells expand wildcards (as you can see in the command actually run, above the error). In Windows it's up to the program you are calling to expand wildcards. Since that is what you want in case of nodemon, it worked "by chance" on Windows without escaping the asterisk because it doesn't have any special meaning to cmd, but in Linux it will get expanded and that's not what you want.

            Source https://stackoverflow.com/questions/67800328

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

            Vulnerabilities

            No vulnerabilities reported

            Install lock

            You can download it from GitHub.
            You can use lock like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the lock component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

            Support

            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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