java-design-patterns | :bulb:设计模式Java实现 | Architecture library

 by   5zhu Java Version: Current License: No License

kandi X-RAY | java-design-patterns Summary

kandi X-RAY | java-design-patterns Summary

java-design-patterns is a Java library typically used in Architecture applications. java-design-patterns has no bugs, it has no vulnerabilities and it has low support. However java-design-patterns build file is not available. You can download it from GitHub.

:bulb:设计模式Java实现
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            kandi-support Support

              java-design-patterns has a low active ecosystem.
              It has 40 star(s) with 1 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              java-design-patterns has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of java-design-patterns is current.

            kandi-Quality Quality

              java-design-patterns has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              java-design-patterns 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

              java-design-patterns releases are not available. You will need to build from source code and install.
              java-design-patterns 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 java-design-patterns and discovered the below as its top functions. This is intended to give you an instant insight into java-design-patterns implemented functionality, and help decide if they suit your requirements.
            • Clone a shape
            • Creates a clone of this object
            • Starts playing the media
            • Load map
            • The main method
            • Prints the shearana
            • Main entry point
            • Validates given string
            • Move the cursor to console
            • Move to next time
            • Notify all observers of all observers
            • Sorts the destination
            • Register an observer
            • Draw the square
            • Removes an observer
            • Draw the rectangle
            • Removes an Employee
            • Add an Employee
            • Implements the sleep
            • Process the discount
            • Do transaction
            • Main method
            • Package private for testing
            • Create a Car
            • Get a circle with the given color
            • Print the move
            Get all kandi verified functions for this library.

            java-design-patterns Key Features

            No Key Features are available at this moment for java-design-patterns.

            java-design-patterns Examples and Code Snippets

            No Code Snippets are available at this moment for java-design-patterns.

            Community Discussions

            QUESTION

            How to properly implement Optimistic Locking at the application layer?
            Asked 2021-Mar-03 at 22:15

            I am a little confused as to why Optimistic Locking is actually safe. If I am checking the version at the time of retrieval with the version at the time of update, it seems like I can still have two requests enter the update block if the OS issues an interrupt and swaps the processes before the commit actually occurs. For example:

            ...

            ANSWER

            Answered 2021-Mar-03 at 22:15

            Well... that's the optimistic part. The optimism is that it is safe. If you have to be certain it's safe, then that's not optimistic.

            The example you show definitely is susceptible to a race condition. Not only because of thread scheduling, but also due to transaction isolation level.

            A simple read in MySQL, in the default transaction isolation level of REPEATABLE READ, will read the data that was committed at the time your transaction started.

            Whereas updating data will act on the data that is committed at the time of the update. If some other concurrent session has updated the row in the database in the meantime, and committed it, then your update will "see" the latest committed row, not the row viewed by your get method.

            The way to avoid the race condition is to not be optimistic. Instead, force exclusive access to the record. Doveryai, no proveryai.

            If you only have one app instance, you might use a critical section for this.

            If you have multiple app instances, critical sections cannot coordinate other instances, so you need to coordinate in the database. You can do this by using pessimistic locking. Either read the record using a locking read query, or else you can use MySQL's user-defined locks.

            Source https://stackoverflow.com/questions/66465456

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

            Vulnerabilities

            No vulnerabilities reported

            Install java-design-patterns

            You can download it from GitHub.
            You can use java-design-patterns 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 java-design-patterns 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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