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  • Redis源码阅读(一) SDS简单动态字符串2022-08-02 01:32:41

    tag: #Redis #源码阅读 #数据结构 代码链接: https://github.com/redis/redis/blob/unstable/src/sds.h https://github.com/redis/redis/blob/unstable/src/sds.c 数据结构 sds的定义 sds定义是一个char* 类型指针的别名, 我们在传递sds的时候实质上就是传递的C风格字符串. 实际

  • Openshift cluster with Arc enabled SQL Server managed instance2022-06-22 10:36:29

    reference https://docs.microsoft.com/en-us/azure/azure-arc/data/create-sql-managed-instance-using-kubernetes-native-tools issue encountered: failed to create resource and error msg like below FailedCreate replicaset/bootstrapper-796c4c67db Error creati

  • Python 中的内存管理2022-05-22 13:02:19

    Python 中一切皆对象,这些对象的内存都是在运行时动态地在堆中进行分配的,就连 Python 虚拟机使用的栈也是在堆上模拟的。既然一切皆对象,那么在 Python 程序运行过程中对象的创建和释放就很频繁了,而每次都用 malloc() 和 free() 去向操作系统申请内存或释放内存就会对性能造成影响,毕

  • FATAL:gpu_data_manager_impl_private.cc(415)] GPU process isn‘t usable. Goodbye. 实测有效2021-10-14 16:32:49

    Ubuntu环境下安装IDEA软件时报错:FATAL:gpu_data_manager_impl_private.cc(415)] GPU process isn’t usable. Goodbye. 参考网址:stackoverflow上的解决方案 需要注意修改的是 /root/.config/JetBrains/IntelliJIdea2021.2/idea64.vmoptions这一路径下的idea64.vmoptions而不

  • redis字符串源码分析sds2021-05-04 17:03:38

    前言 分析的为redis现在的最新版 6.2.3 源码链接: sds.h: https://github.com/redis/redis/blob/unstable/src/sds.h sds.c: https://github.com/redis/redis/blob/unstable/src/sds.c sds结构体的定义 // sds的定义 typedef char *sds; /* Note: sdshdr5 is never used, we

  • lsdg中的Usable_file_MB 为什么是负值?2021-04-10 19:03:58

    lsdg中的Usable_file_MB 为什么是负值?Negative Values of USABLE_FILE_MB Due to the relationship between FREE_MB, REQUIRED_MIRROR_FREE_MB, and USABLE_FILE_MB, USABLE_FILE_MB can go negative. Although this is not necessarily a critical situation, it does mean that

  • android--------解决Entities and POJOs must have a usable public constructor2020-02-06 13:57:20

         今天在学习android数据库,运行程序的时候报错,错误是:Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters match the fields (by name and type).Tried the following constructors but the

  • erlang:wxWidgets not found, wx will not be usable2019-09-23 14:36:08

    erlang:wxWidgets not found, wx will not be usable 在linux中安装rabbitmq遇到该问题,通过以下方法解决: 在命令行中输入wx-config --version,如果没有安装,根据提示安装相关组件即可, apt install libwxgtk3.0-dev。

  • org.hibernate.HibernateException: connnection proxy not usable after transaction2019-06-17 08:52:03

    2019独角兽企业重金招聘Python工程师标准>>> org.hibernate.HibernateException: connnection proxy not usable after transaction completion at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:42) at $Proxy10.prepareStatement

  • org.hibernate.HibernateException: connnection proxy not usable after transaction2019-06-17 08:49:00

    2019独角兽企业重金招聘Python工程师标准>>> org.hibernate.HibernateException: connnection proxy not usable after transaction completion at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:42) at $Proxy10.prepareStatement

  • org.hibernate.HibernateException: connnection proxy not usable after transaction2019-06-17 08:48:39

    2019独角兽企业重金招聘Python工程师标准>>> org.hibernate.HibernateException: connnection proxy not usable after transaction completion at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:42) at $Proxy10.prepareStatement

  • org.hibernate.HibernateException: connnection proxy not usable after transaction2019-06-17 08:47:51

    2019独角兽企业重金招聘Python工程师标准>>> org.hibernate.HibernateException: connnection proxy not usable after transaction completion at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:42) at $Proxy10.prepareStatement

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