There are three common ways to synchronize cache data: Set validity period: Set the validity period for the cache, and it will be automatically deleted after expiration. Update when querying again Advantages: simple and convenient Disadvantages: poor timeliness, cache may be inconsistent before expiration Scenario: Business with low update frequency and low timeliness requirements Synchronous […]
Tag: multi-level
R language uses a linear mixed effects (multi-level/layered/nested) model to analyze the relationship between pitch and polite attitude…
Full text download link: http://tecdat.cn/?p=23681 What is the difference between the linear mixed effects model and the linear model we already know(Click “Read the original text” at the end of the article to get the completeCode data)? Related videos A linear mixed model (sometimes called a “multilevel model” or a “hierarchical model”, depending on the […]
R language uses a linear mixed effects (multi-level/layered/nested) model to analyze the relationship between pitch and polite attitude…
Full text download link: http://tecdat.cn/?p=23681 What is the difference between the linear mixed effects model and the linear model we already know(Click “Read the original text” at the end of the article to get the completeCode data)? Related videos A linear mixed model (sometimes called a “multilevel model” or a “hierarchical model”, depending on the […]
Multi-level cache JVM process cache
1. What is multi-level cache The traditional caching strategy is generally to query Redis after the request reaches Tomcat. If there is no hit, query the database, as shown in the figure: The following problems exist: The request needs to be processed by Tomcat, and the performance of Tomcat becomes the bottleneck of the entire […]
Read this article to understand from CPU multi-level cache & cache coherence protocol (MESI) to Java memory model
Article directory CPU Multi-Level Cache & Cache Coherence Protocol (MESI) CPU multi-level cache Cache Coherence Protocol (MESI) Cache line Four cache states cache line state transition Multi-core collaboration example Website experience MESI optimization and introduced issues Store Buffers & Invalidate Queue Problems caused by Store Bufferes & Invalidate Queue Hardware memory model Read Barrier & […]
R language uses a linear mixed effects (multi-level/layered/nested) model to analyze the relationship between pitch and polite attitude…
Full text download link: http://tecdat.cn/?p=23681 What is the difference between the linear mixed effects model and the linear model we already know(Click “Read the original text” at the end of the article to get the completeCode data)? Related videos A linear mixed model (sometimes called a “multilevel model” or “hierarchical model”, depending on the context) […]
Method to obtain map boundary data in real time in November 2023, multi-level linkage of provinces, cities, counties and streets [attached real-time geoJson data download]
First, let’s take a look at the renderings Online experience address: https://geojson.hxkj.vip, and provide real-time geoJson data file download The downloadable data includes provincial-level geojson administrative boundary data, municipal-level geojson administrative boundary data, district/county-level geojson administrative boundary data, provincial, city, and county street administrative code four-level linkage data (accurate to the township/street level), provincial Five-level […]
Recursive function realizes multi-level linkage search help in provinces and cities
1. Demand background When there are mutually hierarchical fields in the program and you need to use search help, you can do so by calling search help multiple times. For example, in the program, you need to fill in the third-level address of the province, city, and city 2. Implementation method 2.1. Straight talk Program […]
el-table multi-level table header drag and drop
Scene The business needs to do multi-level header dragging. The specific requirements are as follows: A parent header without a child header cannot be dragged. The first serial number cannot be dragged. The parent header is transposed when dragged. When a child header under the same parent header is dragged, the child header is transposed. […]
IOS tree multi-level menu
Realization renderings Without further ado, let’s get straight to the code; Create an entity class to store row data MenuNode.h #import <Foundation/Foundation.h> NS_ASSUME_NONNULL_BEGIN @interface MenuNode: NSObject @property (nonatomic, copy) NSString * parentId;//The id of the parent node, if it is -1, it means that the node is the root node @property (nonatomic, copy) NSString * […]