Home Database Mysql Tutorial 三台服务器数据从上层传送到底层SQL结构

三台服务器数据从上层传送到底层SQL结构

Jun 07, 2016 pm 05:53 PM
data server

三台服务器(上层、中间和底层)的数据将从上层传送到底层的服务器。上层至中间的服务器是单向复制,中间至底层的服务器是双向复制。 为了实现这种复制结构,我们可以采取下列方法: 1.上层和中间服务器之间的单向传送复制加上中间与底层服务器之间的可更新的

三台(上层、中间和底层)的数据将从上层传送到底层的。上层至中间的服务器是单向复制,中间至底层的服务器是双向复制。

  为了实现这种复制结构,我们可以采取下列方法:

  1.上层和中间服务器之间的单向传送复制加上中间与底层服务器之间的可更新的订阅。

  2.上层和中间服务器之间的单向传输复制加上中间与底层服务器的合并。

  3.合并上层和中间的服务器,使用ExchangeType 2,加上中间和底层服务器的正常合并。

  前两种方法是简单的。因此,我们这里讨论第三种方法。

  关于ExchangeType [1|2|3]:指定exchange(交换)类型。1的值代表一个发送exchange服务器,2的值代表一个接收的exchange服务器,3的值代表一个双向的exchange服务器,通常为默认设置。

  请注意,在实施这个设置之前,我们需要理解我们在做什么和最终目标是什么?

  如果中间服务器的变化没有复制到上层的服务器,我们应该知道这个情况,以便我们需要重新初始化中间的服务器。我们没有把这个表格放在中间的服务器,而是选择人工同步的选择,这样,我们就不会丢失在中间的服务器中的数据,而不是在上层服务器中的数据。

  简言之,这种可能性是很大的。但是,我们需要理解我们正在采用的结构,包括在各个站点可能出现的任何冲突,以及一旦重新进行初始化可能产生的结果。因此,我们建议在生产环境中采用这种方法之前要在测试环境中进行深入的测试。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Use ddrescue to recover data on Linux Use ddrescue to recover data on Linux Mar 20, 2024 pm 01:37 PM

DDREASE is a tool for recovering data from file or block devices such as hard drives, SSDs, RAM disks, CDs, DVDs and USB storage devices. It copies data from one block device to another, leaving corrupted data blocks behind and moving only good data blocks. ddreasue is a powerful recovery tool that is fully automated as it does not require any interference during recovery operations. Additionally, thanks to the ddasue map file, it can be stopped and resumed at any time. Other key features of DDREASE are as follows: It does not overwrite recovered data but fills the gaps in case of iterative recovery. However, it can be truncated if the tool is instructed to do so explicitly. Recover data from multiple files or blocks to a single

Open source! Beyond ZoeDepth! DepthFM: Fast and accurate monocular depth estimation! Open source! Beyond ZoeDepth! DepthFM: Fast and accurate monocular depth estimation! Apr 03, 2024 pm 12:04 PM

0.What does this article do? We propose DepthFM: a versatile and fast state-of-the-art generative monocular depth estimation model. In addition to traditional depth estimation tasks, DepthFM also demonstrates state-of-the-art capabilities in downstream tasks such as depth inpainting. DepthFM is efficient and can synthesize depth maps within a few inference steps. Let’s read about this work together ~ 1. Paper information title: DepthFM: FastMonocularDepthEstimationwithFlowMatching Author: MingGui, JohannesS.Fischer, UlrichPrestel, PingchuanMa, Dmytr

Google is ecstatic: JAX performance surpasses Pytorch and TensorFlow! It may become the fastest choice for GPU inference training Google is ecstatic: JAX performance surpasses Pytorch and TensorFlow! It may become the fastest choice for GPU inference training Apr 01, 2024 pm 07:46 PM

The performance of JAX, promoted by Google, has surpassed that of Pytorch and TensorFlow in recent benchmark tests, ranking first in 7 indicators. And the test was not done on the TPU with the best JAX performance. Although among developers, Pytorch is still more popular than Tensorflow. But in the future, perhaps more large models will be trained and run based on the JAX platform. Models Recently, the Keras team benchmarked three backends (TensorFlow, JAX, PyTorch) with the native PyTorch implementation and Keras2 with TensorFlow. First, they select a set of mainstream

Slow Cellular Data Internet Speeds on iPhone: Fixes Slow Cellular Data Internet Speeds on iPhone: Fixes May 03, 2024 pm 09:01 PM

Facing lag, slow mobile data connection on iPhone? Typically, the strength of cellular internet on your phone depends on several factors such as region, cellular network type, roaming type, etc. There are some things you can do to get a faster, more reliable cellular Internet connection. Fix 1 – Force Restart iPhone Sometimes, force restarting your device just resets a lot of things, including the cellular connection. Step 1 – Just press the volume up key once and release. Next, press the Volume Down key and release it again. Step 2 – The next part of the process is to hold the button on the right side. Let the iPhone finish restarting. Enable cellular data and check network speed. Check again Fix 2 – Change data mode While 5G offers better network speeds, it works better when the signal is weaker

How to configure Dnsmasq as a DHCP relay server How to configure Dnsmasq as a DHCP relay server Mar 21, 2024 am 08:50 AM

The role of a DHCP relay is to forward received DHCP packets to another DHCP server on the network, even if the two servers are on different subnets. By using a DHCP relay, you can deploy a centralized DHCP server in the network center and use it to dynamically assign IP addresses to all network subnets/VLANs. Dnsmasq is a commonly used DNS and DHCP protocol server that can be configured as a DHCP relay server to help manage dynamic host configurations in the network. In this article, we will show you how to configure dnsmasq as a DHCP relay server. Content Topics: Network Topology Configuring Static IP Addresses on a DHCP Relay D on a Centralized DHCP Server

The vitality of super intelligence awakens! But with the arrival of self-updating AI, mothers no longer have to worry about data bottlenecks The vitality of super intelligence awakens! But with the arrival of self-updating AI, mothers no longer have to worry about data bottlenecks Apr 29, 2024 pm 06:55 PM

I cry to death. The world is madly building big models. The data on the Internet is not enough. It is not enough at all. The training model looks like "The Hunger Games", and AI researchers around the world are worrying about how to feed these data voracious eaters. This problem is particularly prominent in multi-modal tasks. At a time when nothing could be done, a start-up team from the Department of Renmin University of China used its own new model to become the first in China to make "model-generated data feed itself" a reality. Moreover, it is a two-pronged approach on the understanding side and the generation side. Both sides can generate high-quality, multi-modal new data and provide data feedback to the model itself. What is a model? Awaker 1.0, a large multi-modal model that just appeared on the Zhongguancun Forum. Who is the team? Sophon engine. Founded by Gao Yizhao, a doctoral student at Renmin University’s Hillhouse School of Artificial Intelligence.

Tesla robots work in factories, Musk: The degree of freedom of hands will reach 22 this year! Tesla robots work in factories, Musk: The degree of freedom of hands will reach 22 this year! May 06, 2024 pm 04:13 PM

The latest video of Tesla's robot Optimus is released, and it can already work in the factory. At normal speed, it sorts batteries (Tesla's 4680 batteries) like this: The official also released what it looks like at 20x speed - on a small "workstation", picking and picking and picking: This time it is released One of the highlights of the video is that Optimus completes this work in the factory, completely autonomously, without human intervention throughout the process. And from the perspective of Optimus, it can also pick up and place the crooked battery, focusing on automatic error correction: Regarding Optimus's hand, NVIDIA scientist Jim Fan gave a high evaluation: Optimus's hand is the world's five-fingered robot. One of the most dexterous. Its hands are not only tactile

Best Practice Guide for Building IP Proxy Servers with PHP Best Practice Guide for Building IP Proxy Servers with PHP Mar 11, 2024 am 08:36 AM

In network data transmission, IP proxy servers play an important role, helping users hide their real IP addresses, protect privacy, and improve access speeds. In this article, we will introduce the best practice guide on how to build an IP proxy server with PHP and provide specific code examples. What is an IP proxy server? An IP proxy server is an intermediate server located between the user and the target server. It acts as a transfer station between the user and the target server, forwarding the user's requests and responses. By using an IP proxy server

See all articles