1. Construction background Cluster mode-docker version, hash slot partition for billion-level data storage 1. 100-200 million pieces of data need to be cached. How to design it? Answer: Using distributed storage, there are generally three solutions in the industry The first type: hash remainder partition (generally used by small factories) Disadvantages: The biggest disadvantage of […]
Tag: slots
Advancement of postgresql logical replication slots
Why should the logical replication slot be advanced? We know that the logical replication slot has two functions, one is to protect the system table from being vacuumed, and the other is to protect the xlog and prevent the xlog that needs to be decoded from being recycled. If the system table does not advance […]
openpnp – modify source code – SlotSchultzFeederConfigurationWizard
Article directory openpnp-src modify-SlotSchultzFeederConfigurationWizard Overview notes Remark END openpnp – src modify – SlotSchultzFeederConfigurationWizard Overview When assigning components to SlotSchultzFeeder, I found that the Part names generated in the coordinate file were spelled together and the names were very long. When selecting from the feeder component drop-down list, I don’t feel confident because I can’t […]
[QT] Signals and slots can automatically pass parameters
1. Pre-sample code main.cpp #include “widget.h” #include <QApplication> // argc, argv receive mouse and keyboard commands and pass them to the QApplication object. int main(int argc, char *argv[]) {<!– –> QApplication a(argc, argv); // Application object a, in Qt, there is only one application object. Widget w; // Window object w, Widget parent class -> […]
openpnp – SlotSchultzFeeder source code bugfix
Article directory openpnp – SlotSchultzFeeder source code bugfix Overview notes openpnp source code debugging environment Troubleshooting ideas Open a git branch Issues found – 1 Issues found – 2 Issues found – 3 Logical corrections to address the above issues D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\machine\reference\driver\wizards\GcodeDriverConsole.java D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\machine\reference\driver\GcodeDriver.java D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\machine\reference\driver\GcodeAsyncDriver.java D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\machine\reference\feeder\wizards\SlotSchultzFeederConfigurationWizard.java D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\machine\reference\driver\GcodeDriver.java D:\my_openpnp\openpnp_github\src\main\java\org\openpnp\Main.java Remark END openpnp – SlotSchultzFeeder source code bugfix Overview […]
vue2 skill tree (8) – component reuse, slots, dynamic components
Directory Detailed explanation of Vue 2 component reuse Global component reuse Project examples Reuse of local components Project examples Slot reuse Project examples Dynamic component reuse Project examples Detailed explanation of Vue 2 component slots basic slot Project examples named slot Project examples scope slot Project examples Detailed explanation of Vue 2 dynamic components Basic […]
Qt Signals & Slots VS QEvents – Qt cross-thread asynchronous operation performance test and selection suggestions
Related code reference: https://gitcode.net/coloreaglestdio/qtcpp_demo/-/tree/master/qt_event_signal 1. Origin of the problem When implementing low-latency transformation of taskBus, avoiding the abuse of signals and slots played a better role. In the previous article, the author described how to improve the throughput of the software radio (SDR) platform by avoiding broadcast signals and frequent new and delete. Recently, considering […]
C++ – Implementing events and delegates, signals and slots mechanisms using the standard library
Use the C++ standard library to simply implement event triggering mechanism Event.h /* Author:StubbornHuang Data:2023.1.31 Email:[email protected] */ #ifndef _EVENT_H_ #define _EVENT_H_ #include <functional> #include <map> #include <type_traits> #ifndef EVENT_NO_THREAD_SAFETY #define EVENT_THREAD_SAFETY #endif // !EVENT_NO_THREAD_SAFETY #ifdef EVENT_THREAD_SAFETY #include <atomic> #include <mutex> #endif // EVENT_THREAD_SAFETY #ifdef EVENT_THREAD_SAFETY #define DELEGATE_ID_TYPE std::atomic_uint64_t #else #define DELEGATE_ID_TYPE std::uint64_t #endif // EVENT_THREAD_SAFETY […]
Vue – standard development methods, components (global, local, props, event delivery), use of slots
Table of Contents 1. Vue 1.1. Standard development method 1.2. Use of components 1.2.1. Global components 1.2.2. Local components 1.2.3. props transfer static data 1.2.4. props transfer dynamic data 1.2.5. Event delivery 1.2.6, slot slot 一、Vue 1.1. Standard development method The standard development method of Vue is SPA (Single Page Application): a single-page web application, […]
Vue Rebuild005Customized routing and slots
Article directory Copyright Notice Custom instructions First introduction to commands Configuration items in the command Command syntax command value Encapsulation of v-loading instructions analyze accomplish slot Default slot Slot default named slot scope slot Steps for usage Complete case Copyright Statement The content of this blog is based on my personal study notes from the […]