disruptor | High Performance Inter-Thread Messaging Library | Architecture library

 by   LMAX-Exchange Java Version: 4.0.0.RC1 License: Apache-2.0

kandi X-RAY | disruptor Summary

kandi X-RAY | disruptor Summary

disruptor is a Java library typically used in Architecture applications. disruptor has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub, Maven.

A High Performance Inter-Thread Messaging Library.

            kandi-support Support

              disruptor has a medium active ecosystem.
              It has 16066 star(s) with 3784 fork(s). There are 1263 watchers for this library.
              It had no major release in the last 12 months.
              There are 8 open issues and 284 have been closed. On average issues are closed in 342 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of disruptor is 4.0.0.RC1

            kandi-Quality Quality

              disruptor has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              disruptor is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              disruptor releases are available to install and integrate.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              disruptor saves you 6189 person hours of effort in developing the same functionality from scratch.
              It has 17703 lines of code, 1606 functions and 237 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed disruptor and discovered the below as its top functions. This is intended to give you an instant insight into disruptor implemented functionality, and help decide if they suit your requirements.
            • Processes multiple events .
            • Poll for the next event handler .
            • Removes the sequence from the holder field .
            • Start the actor .
            • Helper method to apply a wait method to the barrier .
            • Translates two arguments .
            • Compares this event with the given value .
            • Reads the next value from the event polled .
            • Gets the last sequence in the chain .
            • Waits for the next sequence to be available for the given sequence .
            Get all kandi verified functions for this library.

            disruptor Key Features

            No Key Features are available at this moment for disruptor.

            disruptor Examples and Code Snippets

            No Code Snippets are available at this moment for disruptor.

            Community Discussions


            maven dependencies copied from dependent project after zip assemby
            Asked 2022-Jan-24 at 16:42

            If this already has an answer, I haven't managed to find it. I have spent many hours getting this far, before throwing in the towel and asking here! When it comes to Maven, I would describe myself as a 'Sunday driver'.

            Plugin versions: compiler=3.9.0; resurce and dependencies=3.2.0; jar=3.2.2; assembly=3.3.0.

            I have two Maven projects, let's call then AppA and Proj1. Proj1 contains all of the 'working' code and 3rd party jar dependencies.

            AppA contains the Main class and the app's folders such as 'conf' and 'logs'. Both projects have 'jar' packaging.

            AppA's pom has the plugins required to create the jar file with a manifest that defines all of the required jar files in its classpath as 'lib/xxx.jar'. It also has 'Proj1' as a dependency.

            The problem I have is that Maven is assembling the zip file before copying all of the dependent jars to the 'lib' folder. Which means that the 'lib' folder is missing from the zip file.

            If I build AppA from a single project, the zip file is assembled after the 'lib' folder has been populated,

            Can anyone advise me whatI need to do to persuade Maven to copy the dependent jar files to 'lib' before assembling the zip file?

            The reason that I have this structure is so that I can create AppB + Proj1 in the future.

            Also, the lib file contains all of the Maven plugin jars and their dependencies. When I buils from a single project, they are excluded.




            Answered 2022-Jan-24 at 16:12

            It happens because the maven-assembly-plugin executes on a prior phase (package) than the the maven-dependency-plugin phase (install). Try to set up the execution of the plugins so it will act as you expect.

            I would also suggest a different approach which I think can simplify you build configuration - use a multi-module pom which will aggregate both project. Than on the concrete pom.xml of AppA use Proj1 as a dependency. It will saves you from copying around files and repackage.

            Source https://stackoverflow.com/questions/70832914


            Sticky nav bar flickers when scrolling slowly
            Asked 2022-Jan-22 at 17:08

            I’m currently stuck on an issue that’s happening with our sticky nav.

            When a user scrolls down the screen very slowly our second navigation which is a sticky nav, flickers for some reason. I don’t know what it could be.

            I’ve tried adding “-webkit-transform: translateZ(0);” to the “.affix” and ".affix-top" classes with no luck.

            This issue is only happening on Chrome and Edge. Firefox, IE11 and Safari this issue does not occur thankfully.

            What's causing this? How can/if this be resolved?

            Link to live page here.

            Here’s the JS to the sticky nav:



            Answered 2022-Jan-22 at 17:08

            In order to make it works, please make the next things:

            1. Add position sticky (and other styles) to this element:

            2A. Remove the code that toggle between .affix and .affix-top


            2B 1. If you can't do step 2A, you can add this height instead (in order to make affix and affix-top to be with the same height):

            2B 2. Remove position: fixed from affix and position static from affix-top (they don't need positions cause we set position to their parent)

            In addition, I don't know if it's third party code or not but please try to not use !important property. It's hard to set style for those elements.

            Source https://stackoverflow.com/questions/70807379


            AttributeError: Can't get attribute 'journalerReader' on
            Asked 2021-Oct-11 at 13:06

            I tried to implement Lmax in python .I tried to handle data in 4 processes



            Answered 2021-Oct-11 at 13:06

            Your first problem is that the target of a Process call cannot be within the if __name__ == '__main__': block. But:

            As I mentioned in an earlier post of yours, the only way I see that you can share an instance of CircularBuffer across multiple processess is to implement a managed class, which surprisingly is not all that difficult to do. But when you create a managed class and create an instance of that class, what you have is actually a proxy reference to the object. This has two implications:

            1. Each method call is more like a remote procedure call to a special server process created by the manager you will start up and therefore has more overhead than a local method call.
            2. If you print the reference, the class's __str__ method will not be called; you will be printing a representation of the proxy pointer. You should probably rename method __str__ to something like dump and call that explicitly whenever you want a representation of the instance.

            You should also explicitly wait for the completion of the processes you are creating so that the manager service does not shutdown prematurely, which means that each process should be assigned to a unique variable and have a unique name.

            Source https://stackoverflow.com/questions/69521484


            Grouping flat data to create a hierarchical tree using LINQ for JSON
            Asked 2021-Sep-14 at 15:17

            I am trying to project a flat data source into an object that can be serialized directly to JSON using Newtonsoft.Json. I've created a small program in Linqpad with an imagined inventory overview as a test. The requested output is as follows:

            • Site name
              • Inventory name
                • Product name
                • Weight
                • Units
              • Inventory name
                • Product (etc)

            For the life of me I can't get it to only have a single "Site name" as the only root object. I want an to list the contents inside an inventory inside a site, but it always ends up looking like:

            How can I make the "Site" distinct having a collection of "inventory" which each has a collection of "products"?

            My actual data source is a database table and it resembles the structure of my test object - and it is what it is.

            The test code in Linqpad: (note that it references Newtonsoft.Json)



            Answered 2021-Sep-14 at 15:17

            Ok I have a solution using dictionaries which will group everything properly:

            Source https://stackoverflow.com/questions/69164849


            mixed sync/async logging log4j does not work
            Asked 2021-Apr-27 at 07:41

            I am trying to analyze and implement mixed sync and async logging. I am using Spring boot application along with disruptor API. My log4j configuration:



            Answered 2021-Apr-27 at 07:41

            I'm not really sure what you think you are testing.

            When additivity is enabled the log event will be copied and placed into the Disruptor's Ring Buffer where it will be routed to the console appender on a different thread. After placing the copied event in the buffer the event will be passed to the root logger and routed to the Console Appender in the same thread. Since both the async Logger and sync Logger are doing the same thing they are going to take approximately the same time. So I am not really sure why you believe anything will be left around by the time the System.out call is made.

            When you only use the async logger the main thread isn't doing anything but placing events in the queue, so it will respond much more quickly and it would be quite likely your System.out message would appear before all log events have been written.

            I suspect there is one very important piece of information you are overlooking. When an event is routed to a Logger the level specified on the LoggerConfig the Logger is associated with is checked. When additivity is true the event is not routed to a parent Logger (there isn't one). It is routed to the LoggerConfig's parent LoggerConfig. A LoggerConfig calls isFiltered(event) which ONLY checks Filters that have been configured on the LoggerConfig. So even though you have level="info" on your Root logger, debug events sent to it via the AsyncLogger will still be logged. You would have to add a ThresholdFilter to the RootLogger to prevent that.

            Source https://stackoverflow.com/questions/67271610


            Does elasticsearch's _id field support blank char like "" when use bulkrequest to write data to elasticsearch?
            Asked 2021-Mar-10 at 05:01

            Recently, when I write data into elasticsearch with BulkRequest, I got the following exception:



            Answered 2021-Mar-10 at 05:01

            ES _id field doesn't support blank char like "".

            You have 2 options:

            • Always provide an id

            • You just need to remove the id field that you have and elastic will assign an auto-generated one in "_id" field. Something like

            Source https://stackoverflow.com/questions/66531015


            java.util.ConcurrentModificationException when adding some key to metadata in stormcrawler
            Asked 2021-Mar-01 at 10:25

            I have added a field to metadata for transferring and persisting in the status index. The field is a List of String and its name is input_keywords. After running topology in the Strom cluster, The topology halted with the following logs:



            Answered 2021-Mar-01 at 10:25

            You are modifying a Metadata instance while it is being serialized. You can't do that, see Storm troubleshooting page.

            As explained in the release notes of 1.16, you can lock the metadata. This won't fix the issue but will tell you where in your code you are writing into the metadata.

            Source https://stackoverflow.com/questions/66406469


            301 Redirects not performing as expected
            Asked 2021-Feb-28 at 17:27

            we're migrating domains and some but not all content. The URL structure is different.

            Below is what I have in my .htaccess file. I only added the code at the end starting with "#User added 301 Redirect", the other entries were in .htaccess already.

            Expected/Desired: I want anyone who goes to the old main domain to the new main domain, and anyone who attempts to access these specific pages of the old site/domain to go to the mapping in the new site.

            Observed: the main domain 301 works olddomain.com now goes to newdomain.com, or if the file name/path is exactly the same. Redirects follow he taxonomy of the old domain, not use my mapping. So, "olddomain.com/about-me" tries to go to "newdomain.com/about-me" instead of the correct mapping "newdomain.com/about" as shown in the .htaccess file and results in a 401 file not found error.

            Thoughts? Feel free to respond like I'm five years old.



            Answered 2021-Feb-28 at 17:27

            You could try redirect directives in following order:

            Source https://stackoverflow.com/questions/66404823


            log4j2 configuration for graylog
            Asked 2021-Jan-27 at 15:13

            We want to centralize all our java application logs on Graylog server. We use apache tomcat as a container and log4j for the logging framework. log4j2.xml



            Answered 2021-Jan-27 at 15:13

            Finally solved. According to documentation

            GELF TCP does not support compression due to the use of the null byte (\0) as frame delimiter.

            So after disabling compress on the log4j2 configuration we saw our log on the gray log server. The below code snippet is a working example

            Source https://stackoverflow.com/questions/65904947


            Apache Ignite Net: some Ignite nodes fail to start up after update to v2.9
            Asked 2020-Dec-10 at 15:14

            I am running Apache Ignite .Net in a Kubernetes cluster on Linux nodes.

            Recently I updated my ignite 2.8.1 cluster to v2.9. After the update some of the services being parts of the cluster fail to start up with the following message:

            *** stack smashing detected ***: terminated

            Interestingly, most often it happens with the 2nd instances of the same microservice. The first instances usually start up successfully (but sometimes the first instances fail, too). Another observation is that it happens to the nodes which publish Service Grid services. Sometimes a full cluster recycle (killing all the nodes then spinning them up again) helps to get all the nodes to start up, sometimes not.

            Did I mess up something during the update? What should I check first of all?

            Below is an excerpt from the Ignite log.



            Answered 2020-Dec-10 at 15:14

            stack smashing detected usually indicates a NullReferenceException in C# code.

            Set COMPlus_EnableAlternateStackCheck environment variable to 1 before running your app to see full stack trace (this works for .NET Core 3.0 and later).


            Source https://stackoverflow.com/questions/65235845

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


            No vulnerabilities reported

            Install disruptor

            You can download it from GitHub, Maven.
            You can use disruptor 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 disruptor 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 .


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