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  • Securing MySQL Data at Rest with Encryption
    Securing MySQL Data at Rest with Encryption
    MySQL data at rest is mainly implemented in three steps: 1. Enable InnoDB tablespace encryption, configure my.cnf parameters such as innodb_encrypt_tables=ON and set the encryption algorithm AES-CBC, but the old table needs to be manually migrated; 2. Encrypt the data directory at the file system layer, use LUKS, eCryptfs or cloud services such as AWSEBS to encrypt the disk, overwrite the logs and temporary files; 3. Implement key management policies, adopt external KMS such as AWSKMS or HashiCorpVault to avoid key leakage, rotate regularly and separate the master key and table key, ensuring that even a single key leak does not affect overall security.
    Mysql Tutorial . Database 349 2025-08-02 11:48:01
  • How to create a smooth scrolling anchor link with CSS?
    How to create a smooth scrolling anchor link with CSS?
    To achieve smooth scrolling anchor links, just use scroll-behavior:smooth in CSS; 1. Add html{scroll-behavior:smooth;} to the html element to enable global smooth scrolling; 2. Ensure that the href attribute of the anchor link points to the correct ID in the page; 3. If scrolling in a specific container, apply scroll-behavior:smooth to the container with fixed height and overflow; 4. The scroll offset of the target element can be adjusted through scroll-margin-top to avoid fixed head occlusion; this method does not require JavaScript, is compatible with modern browsers, and does not support IE.
    CSS Tutorial . Web Front-end 124 2025-08-02 11:43:01
  • How to define the base URL for all relative URLs in an HTML page
    How to define the base URL for all relative URLs in an HTML page
    To define the base URL of all relative URLs in the HTML page, you need to use elements in part; 1. It will be placed in, so that all relative links are parsed based on the URL; 2. You can add the target="_blank" attribute to make all links open in the new tab page by default; 3. Note that each page can only have one tag and must be located in, the relative path in CSS is not affected by it, and relative requests from JavaScript may also need additional processing; 4. It is suitable for scenarios where the site is located in a subdirectory, a single page application or a server to generate HTML. All relative URLs are affected by it after setting, so you need to ensure that the base URL is correct.
    HTML Tutorial . Web Front-end 735 2025-08-02 11:28:02
  • How to specify the author of an HTML document?
    How to specify the author of an HTML document?
    To specify the author of an HTML document, you need to use a tag and set the name="author" attribute to place it in a section; 1. Use to define the author; 2. If there are multiple authors, you can use multiple tags or listed in a comma-separated content; 3. The tag must be located inside and cannot be placed in it; 4. Metadata will not be displayed on the page, but can be used for SEO and document management; 5. It can be used in combination with other meta tags such as description and keywords to enhance information integrity. This method complies with HTML standards and is widely supported.
    HTML Tutorial . Web Front-end 701 2025-08-02 11:22:02
  • How to Back Up and Restore a MySQL Database?
    How to Back Up and Restore a MySQL Database?
    TobackupaMySQLdatabase,usemysqldumpwiththesyntaxmysqldump-u[username]-p[database_name]>backup_file.sql,whichcreatesaSQLfilecontainingallnecessarycommandstorecreatethedatabase,andincludeoptionslike--databases,--all-databases,or--routinesasneeded;al
    Mysql Tutorial . Database 307 2025-08-02 11:15:02
  • Advanced Conditional Skipping: Creative Uses of `continue` in PHP
    Advanced Conditional Skipping: Creative Uses of `continue` in PHP
    Usecontinuetofilterunwantedelementsearly,reducingnestingandimprovingreadability;2.Usecontinue2toskipouterloopiterationsinnestedloops,avoidingflagsorcomplexbreaklogic;3.Applycontinuewithdynamicconditionsfromconfigurationtomakeloopsflexibleandreusable;
    PHP Tutorial . Backend Development 651 2025-08-02 11:06:01
  • How to structure a blog post with article and section tags in HTML
    How to structure a blog post with article and section tags in HTML
    When using semantic HTML structure blog posts, you should use and tags to improve readability, accessibility, and SEO. 1. Use tags to wrap the entire blog, indicating that this is an independent, self-containable content; 2. Use tags internally to chunk the content by topic, each should contain a title (such as) to form a clear structure; 3. Avoid using it as a style container, which should be used at this time; 4. Use and define the head and tail information of the article in the appropriate position; 5. Use, combine, and other semantic tags to enhance the meaning of the content. Proper use of these tags can help browsers, screen readers, and search engines better understand content hierarchy, thereby improving overall user experience and content accessibility.
    HTML Tutorial . Web Front-end 402 2025-08-02 11:05:02
  • How does the CSS box model work?
    How does the CSS box model work?
    TheCSSboxmodelconsistsoffourlayers:content,padding,border,andmargin,withcontentatthecenterandmarginastheoutermostlayer.2.Bydefault,widthandheightapplyonlytothecontentarea,andpadding,border,andmarginareaddedoutside,butusingbox-sizing:border-boxinclude
    CSS Tutorial . Web Front-end 145 2025-08-02 11:02:00
  • How to generate a series of numbers or dates in MySQL?
    How to generate a series of numbers or dates in MySQL?
    TogenerateaseriesofnumbersinMySQL8.0 ,usearecursiveCTE:WITHRECURSIVEnumbersAS(SELECT1ASnUNIONALLSELECTn 1FROMnumbersWHEREn
    Mysql Tutorial . Database 783 2025-08-02 10:53:01
  • The Art of Merging: `array_merge` vs. the Union Operator ` `
    The Art of Merging: `array_merge` vs. the Union Operator ` `
    The main difference between array_merge() and union operator ( ) is the way to deal with key conflicts and indexes: 1.array_merge() will re-index the numeric keys and overwrite the repeated string keys with the values of the subsequent array; 2.union operator ( ) will retain the value of the left array and do not re-index, which is suitable for setting the default value. Which method should be used according to whether the original value needs to be covered or retained. The two have applicable scenarios rather than advantages and disadvantages.
    PHP Tutorial . Backend Development 119 2025-08-02 10:50:01
  • MySQL Enterprise Monitor for Proactive Database Management
    MySQL Enterprise Monitor for Proactive Database Management
    MySQLEnterpriseMonitor is a graphical monitoring tool provided by Oracle, which is used to monitor MySQL database performance in real time and actively warn. It monitors multiple instances through a centralized console and has functions such as real-time monitoring, automatic alarms, historical data analysis, module integration, etc. Compared to simple scripts, MEM can deeply analyze and automatically diagnose problems. Active monitoring can detect problems such as slow query, lock waiting in advance, predict resource bottlenecks, reduce labor costs, and improve collaboration efficiency. For example, SQL statements that cause locks to wait can be quickly located during peak business periods. The configuration steps include: 1. Install MEM service and agent; 2. Connect and monitor MySQL instance; 3. Set monitoring rules and alarms; 4. View dashboard and segments
    Mysql Tutorial . Database 390 2025-08-02 10:21:01
  • Debugging and Preventing Infinite Loops in PHP do-while Structures
    Debugging and Preventing Infinite Loops in PHP do-while Structures
    Ensure that the loop variable is correctly updated in the loop body, and avoid the condition being always true if the dependent variable is not changed; 2. Use a safe comparison operator (e.g.
    PHP Tutorial . Backend Development 258 2025-08-02 10:08:01
  • What is the legend tag and how is it used with a fieldset in HTML
    What is the legend tag and how is it used with a fieldset in HTML
    Thetagprovidesacaptionforaelement,improvingusabilityandaccessibilitybylabelingagroupofformcontrols;2.Itmustbethefirstchildofthetoensureproperassociation;3.Screenreadersusethelegendtexttodescribethecontextofeachcontrolwithinthegroup;4.Itcanbestyledwit
    HTML Tutorial . Web Front-end 882 2025-08-02 09:54:03
  • Optimizing PHP For Loops: A Deep Dive into Performance
    Optimizing PHP For Loops: A Deep Dive into Performance
    Optimizing the for loop performance of PHP requires a number of measures: 1. Cache loop conditions, such as pre-storing the count() result to avoid repeated calls per iteration; 2. Prioritize foreach when no manual control of the index is required, because it is more efficient and less error-prone; 3. Move unchanged operations in the loop out of the loop, such as configuration acquisition or object creation; 4. Use references (&) to prevent value copying when processing large arrays, and improve memory efficiency; 5. Avoid string splicing in the loop, and first store fragments into the array and then merge with implode(); 6. In a very small number of performance-critical scenarios, loop expansion can be considered to reduce the number of iterations but sacrifice readability; 7. Always pass Xdebug, Blackfire or mic
    PHP Tutorial . Backend Development 787 2025-08-02 09:50:01

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