Article Introduction：Redis has three clustering methods: master-slave replication, sentinel mode, and Cluster cluster. Basic principles of master-slave replication When a new slave server is established, the slave server will send a SYNC command to the master server. After receiving the SYNC command, the master server will execute a BGSAVE command. During execution, all commands will be written to the buffer. , when the BGSAVE command is executed, the generated RDB file will be sent to the slave server. The slave server will use this file to load data into the memory. Then the master server will send the buffer command to the slave server in the format of the Redis command protocol. After that, every time the master service executes a command, it will be synchronized to the slave server. Even if there are multiple slave servers sending SYNC commands to the master server,

2023-05-26 comment 0  1474

Article Introduction：MySQL is currently one of the most popular relational database management systems in the world, and its efficiency, reliability and scalability have been widely recognized. However, although MySQL itself is very stable, some users may encounter out-of-sync issues when using MySQL. This article will delve into the causes and solutions of MySQL out of sync. 1. Reasons for MySQL out of sync 1. Lack of synchronization of master-slave database data Master-slave database is a common replication method for MySQL database. The master database is responsible for writing data, and the slave database is responsible for synchronizing the data of the master database. but,

2023-05-20 comment 0  1179

Article Introduction：Use redis master-slave replication strategy. Updates the slave server's database state to the master server's current database state. The synchronization operation of the slave server to the master server needs to be completed by sending the SYNC command to the master server.

2019-06-17 comment 0  9223

Article Introduction：In order to achieve high availability (HA) in Redis, the following two methods are used: master-slave replication of data. Sentinels are used to monitor the operation of data nodes. Once a problem occurs on the master node, the slave node continues to provide services. Master-slave replication In Redis, data replication between master-slave nodes can be divided into full replication and partial replication. The full replication function of the old version is implemented using the snyc command. The process is: the slave server sends the sync command to the master server. After receiving the sync command, the master server calls the bgsave command to generate the latest rdb file, and synchronizes this file to the slave server. In this way, after the slave server loads the rdb file, the status will be the same as that of the master server.

2023-05-27 comment 0  1142

Article Introduction：Syncing your Windows 11 settings and preferences is a great way to have all the same settings across your Windows devices. However, users are reporting that their Windows 11 themes are not syncing between their devices. Why are my Windows 11 themes out of sync? There are many reasons why your Windows 11 theme may be out of sync. One of them could be that your PC administrator has disabled sync settings. Your Microsoft account might not be verified, or some of the account information may be incorrect. Corrupted system files can also cause this error to occur. Try the following solutions to quickly resolve this issue. How do I make my Windows 11 master

2023-04-13 comment 0  1354

Article Introduction：How to delete novels downloaded from mobile QQ browser? QQ Browser is rich in functions and easy to operate. Many users like to use this browser to work or study. QQ Browser can also handle various types of files. The videos and novels we download in this browser can be stored in QQ Browser. What should I do if I want to clear out the novels downloaded by many friends in my computer? Next, the editor will bring you the steps to delete downloaded novels on mobile QQ browser. Friends who are interested must not miss it. Steps to delete downloaded novels using mobile QQ browser First, find QQ browser on your mobile phone, select it and enter the main interface as shown in the picture. Next, please select the "three" menu button at the arrow in the picture (as shown in the picture). 2. The second step is to reach the "Personal Master"

2024-04-15 comment 0  1097

Article Introduction：The latest news recently is that Microsoft will introduce the “ResetSync” function in the Edge89Beta version in 2021. Microsoft announced that starting from Edge 114, the Microsoft Edge browser will no longer provide the "Reset Sync" button and will replace it with the "Resync Now" option. Microsoft Edge, like Chrome, automatically syncs favorites, settings history, passwords, open tabs, extensions, autofill form entries, payment information and other types of data across all logged-in devices after a user logs in. Sometimes users may need to reset the data they synced to the cloud and they want to clear everything related. In Edge113 browser

2024-03-04 comment 0  489

Article Introduction：How "UC Browser" synchronizes data can provide a faster and more stable browsing experience. What should we do if we want to synchronize uc browser data? Go check it out below. Method to synchronize data 1. Double-click to open the software and click on the avatar box in the upper right corner. 2. Then click "Settings" in the list of options below. 3. After entering the new window interface, click the "Cloud Sync" option in the left column. 4. Then in the pop-up window, check the synchronization items that need to be set according to your needs, and finally click the "Sync Now" button below.

2024-06-07 comment 0  556

Article Introduction：How to perfectly delete the graphics card driver in win7 system 1. Uninstall the nvidia graphics card driver Operation method: First, you need to uninstall the software in the win7 ultimate computer as usual, for example, open the 360 ​​Software Manager installed in the win7 ultimate computer, and then find the For the software uninstall function, select NVIDIAGEFORCEEXPERIENCE12 and click Uninstall. 2. Open your computer browser and use Baidu to search for 360 Driver Master. Download "360 Driver Master". Open the downloaded installation file and install 360 Driver Master. Open 360 Driver Master and click Driver Management. 3. The specific method is as follows: Turn on the computer, right-click on the computer icon, and select "Manage" in the right-click menu to enter.

2024-02-04 comment 0  914

Article Introduction：With the continuous advancement of software development, Git has become the most widely used version control system by most developers. It allows us to easily create branches, do version control, and collaborate efficiently in teams. When we are developing new features or fixing bugs, we usually create a new branch in Git to avoid affecting the main branch. But when we're done with our work, we need to merge those changes back into the master branch to make sure all the code stays in sync. This article will explain how to merge a Git branch into the master branch. At first, we

2023-05-25 comment 0  8307

Article Introduction：1. How to use the PC version of WiFi Master Key? The specific steps to use the wifi master key computer version are as follows: 1. First, we open the browser on the computer and search Baidu to download the wifi master key computer version. 2. After downloading, install the PC version of WiFi Master Key and prepare the computer to connect to WiFi. 3. We use the mobile phone to create a wireless hotspot to demonstrate how to connect to WiFi. The mobile phone creates a wireless hotspot to provide WiFi. For the Master Key PC version, use the computer to connect to the WiFi created by the mobile phone. 4. Open the computer version of WiFi Master Key, click it, and select the WiFi with the blue key behind it to connect. 2. Is there a computer version of WiFi Master Key? have. https://dl.pconline

2024-08-05 comment 0  1005

Article Introduction：You have to enter your password to use any device or access a website, and you often have trouble forgetting your password or getting it mixed up with another password. Especially if you set a long, complex password as a security measure, it can be difficult to remember. So what to do if you forget your iPad password? Follow the solutions below to unlock your locked iPad easily. 1. Unlock using EaseUS Phone Unlock Master Among the four solutions presented here, EaseUS Phone Unlock Master is the easiest and fastest method for erasing and unlocking your iPad passcode. Even if you don't sync or backup with iTunes or iCloud, this unlocking tool can help you get the job done. EaseUS Phone Unlock Master is a professional iOS device unlocking tool by easily erasing iPhone

2024-02-06 comment 0  1793

Article Introduction：Quark Browser is a mobile browsing application with very good functions. Many friends like to use the software. The functions of Quark Browser are very comprehensive. We can record our browsing history through cloud synchronization bookmarks. Let’s learn about it with the editor below! How to set up Quark Browser cloud synchronization bookmarks 1. Open Quark Browser and click to enter the settings page. 2. Then find Cloud Sync in the settings page and click to enter. 3. Finally, find the bookmark function in the cloud synchronization settings, and then click to turn it on.

2024-07-15 comment 0  901

Article Introduction：Sogou Browser is also one of the browsers we often use. It has its own homepage. However, after opening the software, some users find that the 2345 homepage is displayed. If this happens, it has been tampered with. So what should be done? Repair it to the original style. In response to this problem, the editor of today's software tutorial will share the specific operation steps with the majority of users, hoping to bring help to everyone. Sogou browser opens with 2345 home page repair method 1. Click Start, click Run, enter gpedit.msc, and click OK. 2. Click to expand User Configuration - Administrative Templates - Windows Components - Internet Explorer, and then find Disable Change Master in the right window.

2024-08-22 comment 0  769

Article Introduction：In the Win10 operating system, turning on synchronization settings is an important feature that helps maintain a personalized experience and data consistency across devices. Some friends want to know how to enable this function. Next, we will bring you detailed steps to enable synchronization settings in Windows 10 system to help you better master and use this function. Let’s take a look below. Opening method 1. Use the "win+i" shortcut key to quickly enter the "Settings" interface and click the "Account" option. 2. After entering the new interface, click the "Sync your settings" option in the left column. 3. Then find "Sync Settings" on the right, and finally turn on the switch button below it. Extended reading system settings clear documents when exiting and open the history desktop window

2024-03-04 comment 0  575

Article Introduction：How to check the graphics card model on a Dell laptop 1. You can press the Windows + . 2. First turn on the computer and open the browser. Secondly, search for Master Lu in the browser and click to download and install. Finally, you can check the graphics card model of this computer in Master Lu's graphics card detection. 3. First click Computer on the computer desktop. Then click Open Control Panel at the top of the screen. Then click on Device Manager. In this interface, you can view all the hardware configuration of our computer. Finally, right-click a piece of hardware and click Properties. 4. Enter "dxdiag" in run. If a D pops up

2024-06-05 comment 0  1079

Article Introduction：How to set Quark not to automatically add novels? Quark browser will automatically add novels to the bookshelf, but most friends don’t know how not to automatically add novels. Next, the editor brings users how to set Quark not to automatically add novels. Tutorial, interested users come and take a look! Quark Browser usage tutorial How to set Quark not to automatically add novels 1. First open the Quark Browser APP and click the [three horizontal lines] function button in the lower right corner of the main interface; 2. Then challenge to the My Zone page and select the [Cloud Sync] function ;3. Finally, on the cloud synchronization page, slide the button behind [Bookshelf] to automatically add novels without setting it.

2024-02-24 comment 0  1524