After following, you can keep track of his dynamic information in a timely manner
Rewriting dynamic URLs to a more friendly form can be implemented through server configuration or framework routing. If you use the Apache server, you can enable the mod_rewrite module and add rewrite rules in the .htaccess file, such as mapping /product/123 to product.php?id=123; if you use Nginx, you need to complete similar functions through location blocks and rewrite instructions in the site configuration file, and reload the service after modification; for CMS or development frameworks (such as WordPress, Laravel), you can set or define routing rules in the background to achieve friendly URLs without manually writing rewrite rules, and at the same time improve SEO efficiency.
Jul 07, 2025 am 12:43 AM
The key to introducing custom fonts with @font-face is format selection, path accuracy and compatibility considerations; 1. First, ensure that the basic structure of @font-face is written correctly, specify the font-family and src attributes, and give priority to the use of .woff2 and .woff formats; 2. Note that the path should be relative or absolute paths, and ensure that the server can provide font files correctly; 3. In terms of compatibility, it is recommended to provide .woff2 and .woff at the same time to adapt to modern browsers. TTF/OTF can be used as backups, and EOT and SVG have been basically eliminated; 4. Common problems during use include cross-domain loading, CORS needs to be set, path errors need to be checked whether the writing is correct, and the font has not taken effect. You need to confirm that the corresponding fo is used.
Jul 07, 2025 am 12:42 AM
ToeffectivelymanageindexesinlargeSQLdatabases,followthesekeystrategies:first,understandquerypatternsbyanalyzingfrequentWHERE,JOIN,andORDERBYcolumnsusingtoolslikeEXPLAIN;avoidover-indexingandprioritizehigh-cardinalityfields.Second,usecompositeindexesw
Jul 07, 2025 am 12:41 AM
FileReader API can read user device files and process content with JavaScript. It supports reading text files and binary files, such as 1. Read as text such as .txt, .csv, .json; 2. Read as DataURL for previewing pictures; 3. Read as ArrayBuffer for binary operations or sending raw data. It works asynchronously and does not block the main thread. The usage methods include: 1. Obtain the file from; 2. Create a FileReader instance; 3. Call the corresponding reading method; 4. Process the result in the onload event. For example, when previewing the image, read the file through readAsDataURL and then select the file in the onload
Jul 07, 2025 am 12:41 AM
JavaScript provides a variety of loop structures, each with its uses and applicable scenarios. 1. The for loop is suitable for situations where indexes need to be accurately controlled, with flexible structure but long code; 2. The while loop is suitable for scenarios where the number of loops is uncertain and depends on condition judgment, and you need to pay attention to variable initialization and update; 3. The for...of loop is designed for traversing iterable objects, with concise syntax but cannot directly obtain indexes; 4. The for...in loop is used to traverse object attribute keys, and is not recommended for arrays. The main difference from for...of is that traversing keys is keys rather than values. When choosing, you should use it according to your specific needs.
Jul 07, 2025 am 12:41 AM
Whether to choose CentOS or Ubuntu to build a web server depends on the usage scenario and familiarity. 1. Stability and update strategy: CentOS is based on RHEL, focusing on long-term stability, and is suitable for enterprise production environment; Ubuntu is updated every 6 months, with an LTS version, suitable for developers who need new functions. 2. Software packages and ecological support: Ubuntu has rich warehouses and a good experience out of the box; CentOS has a conservative default source, but can be extended through EPEL, suitable for enterprise environments. 3. Community and document resources: Ubuntu is active and document friendly, suitable for beginners; CentOS has RedHat support, professional documentation, suitable for basic operation and maintenance personnel. Therefore, we pursue stable selection of CentOS,
Jul 07, 2025 am 12:40 AM
WhenresolvingComposerdependencyconflicts,startbycarefullycheckingtheerrormessagetoidentifyconflictingpackagesandversions.1.Lookforlinesindicatingwhichpackagesareinvolvedandwhatversionstheyrequire.2.Usecomposerwhyorcomposerwhy-nottoclarifyindirectdepe
Jul 07, 2025 am 12:39 AM
beforeRouteLeave is a navigation guard in Vue.js used to intercept before leaving the route. It is mainly used to prevent users from leaving the page without saving changes, pop-up confirmation prompts, or cleaning up component side effects. It is suitable for form editing pages, data loading and cleaning side effects scenarios. When used, it is implemented through exportdefault{beforeRouteLeave(to,from,next)} or onBeforeRouteLeave of the combined API. The parameter to represents the target route, from represents the current route, and next controls whether to release navigation. Notes include avoiding abuse to affect experience, judging trigger conditions in combination with form status, and ensuring correct call
Jul 07, 2025 am 12:39 AM
The key to JavaScript application performance optimization is to reduce DOM operations, rational use of anti-shake throttling, lazy resource loading, cache and multiplexing calculation results. 1. Reduce unnecessary DOM operations, merge updates, use document fragments or strings to splice HTML content to reduce re-arrangement and redrawing; 2. Use anti-shake (such as search box input) and throttling (such as scrolling monitoring) to control execution frequency; 3. Lazy loading resources, control script loading, IntersectionObserver to achieve lazy image loading, routing-level code segmentation to reduce the loading pressure on the first screen; 4. Use cache to avoid repeated calculations, including variable multiplexing, API request local cache, and function return value memoi
Jul 07, 2025 am 12:39 AM
Docker security risks mainly include misconfiguration, insufficient permission control and poor image management. 1. The default configuration is loose. It is recommended to avoid running containers with root, disable unnecessary daemon functions, and enable TLS encryption authentication; 2. The source and content of the mirror are not safe. Only official or trusted source images should be used regularly to scan for vulnerabilities, use streamlined basic images and continuously updated; 3. There is a risk of container escape, and avoid using the --privileged flag, limiting namespace and system calls, mount the host directory carefully, and strengthening namespace isolation; 4. Improper network configuration leads to service exposure. It is recommended to use a custom bridge network, accurately control port mapping, enable firewall rules, and use DockerComp
Jul 07, 2025 am 12:39 AM
To uninstall APT installed packages, the preferred method is to use the aptremove or aptpurge command. 1. Use sudoaptremovepackage_name to uninstall the package and retain the configuration file, which is suitable for troubleshooting problems or future reinstallation; for example, uninstall vim but retain the .vimrc configuration file: sudoaptremovevim. 2. Using sudoaptpurgepackage_name not only uninstalls the package, but also completely deletes its configuration files, which is suitable for system cleaning or resolving configuration errors; such as thoroughly uninstalling nginx: sudoaptpurgenginx. 3. After uninstalling, you can use sudoaptautoremo
Jul 07, 2025 am 12:38 AM
To change the text encoding in Notepad, select it via the Encoding option in the Save As menu. The specific steps are as follows: 1. After opening the file, click "File>Save As"; 2. Find the "Encoding" drop-down menu at the bottom of the dialog box; 3. Select the required format such as UTF-8 or ANSI; 4. Save as the original file or new file. Different encoding uses vary: ANSI is suitable for legacy systems, UTF-8 is suitable for web and cross-platform compatibility, Unicode (UTF-16LE) is used for Windows applications, and UTF-8 has no BOM for certain tool preferences. Check the current encoding to view the drop-down menu display by opening Save As again. Although Notepad has limited functionality, basic editing
Jul 07, 2025 am 12:38 AM
To improve Apache security, we need to start from module management, permission control, SSL encryption, log monitoring, etc. 1. Close unnecessary modules such as mod_imap, mod_info, etc., and make use of the LoadModule line and restart the service to take effect; 2. Set the root directory permissions to 755 or below, restrict write permissions, and disable directory traversal and script execution in the configuration; 3. Enable HTTPS, use Let'sEncrypt certificate and disable the old version of the protocol and weak encryption suite; 4. Check the access and error logs regularly, combine fail2ban to block abnormal IP, and use IP restrictions on sensitive paths.
Jul 07, 2025 am 12:37 AM
The main difference between NginxPlus and open source Nginx is its enhanced functionality and official support for enterprise-level applications. 1. It provides real-time monitoring of the dashboard, which can track the number of connections, request rate and server health status; 2. Supports more advanced load balancing methods, such as minimum connection allocation, hash-based consistency algorithm and weighted distribution; 3. Supports session maintenance (sticky sessions) to ensure that user requests are continuously sent to the same backend server; 4. Allow dynamic configuration updates, and adjust upstream server groups without restarting the service; 5. Provides advanced cache and content distribution functions to reduce backend pressure and improve response speed; 6. Automatic configuration updates can be achieved through APIs to adapt to Kubernetes or automatic scaling environments; 7. Includes
Jul 07, 2025 am 12:37 AM
The key to handling regular expressions in JavaScript is to master basic syntax and common usage. 1. There are two ways to create: literals (/pattern/flags) are suitable for fixed content, and constructors (newRegExp()) are suitable for dynamic generation; 2. Common modifiers include g (global matching), i (ignoring case), and m (multi-line mode); 3. Basic operations include test() (detecting match), match() (extracting match), replace() (replace content), and split() (split string); 4. When replacing, you can group $1 and $2, or use functions to dynamically process it. By mastering these core points, you can meet the regular needs of daily development.
Jul 07, 2025 am 12:36 AM
AminimalinstallofCentOSisalightweightsetupthatincludesonlyessentialcomponents,makingitidealforserversorsystemsrequiringfullcontrol.Itcontainscoreutilitieslikebash,yum/dnf,networkingtools,andsecuritypackages,whileexcludingdesktopenvironments,webserver
Jul 07, 2025 am 12:35 AM
When encountering DNS problems, first check the /etc/resolv.conf file to see if the correct nameserver is configured; secondly, you can manually add public DNS such as 8.8.8.8 for testing; then use nslookup and dig commands to verify whether DNS resolution is normal. If these tools are not installed, you can first install the dnsutils or bind-utils package; then check the systemd-resolved service status and configuration file /etc/systemd/resolved.conf, and set DNS and FallbackDNS as needed and restart the service; finally check the network interface status and firewall rules, confirm that port 53 is not
Jul 07, 2025 am 12:35 AM
XML must follow the following basic rules: 1. The document must start with a declaration and specify the XML version; 2. All elements must have closed tags; 3. Tags are case-sensitive; 4. Elements must be correctly nested; 5. The attribute values ??must be enclosed in quotes; 6. The document must have a root element; these rules ensure that the XML document structure is clear and easy to parse and maintain.
Jul 07, 2025 am 12:34 AM
Vue's watch provides three advanced options: deep, immediate and flush to enhance listening capabilities. 1.deep:true can listen to internal changes of objects or arrays, suitable for scenarios where attribute changes are required, but it will bring performance overhead; 2.immediate:true can execute a callback immediately during initialization, suitable for cases where processing depends on the initial value; 3.flush controls the timing of callback triggering, 'pre' is executed before rendering, 'post' is executed after rendering, and defaults to 'post', which is used to access the updated DOM or process data in advance. Use these options reasonably to improve code efficiency and logical clarity.
Jul 07, 2025 am 12:34 AM
Java's Future interface executes and obtains results through asynchronous tasks. Common methods include: 1. Submit a task to obtain a Future instance; 2. Call get() to block the result or set a timeout to avoid blocking; 3. Cancel the task through cancel() and use isCancelled() to judge the status; 4. Capture the ExecutionException to handle exceptions; 5. Manually coordinate the results of multiple Future merging, but does not support chain operations.
Jul 07, 2025 am 12:33 AM
Oracle Multitenant architecture improves database integration efficiency through CDB/PDB structure, unified management operations and reduces duplicate maintenance; 1. Upgrade only needs to be performed once at the CDB layer, and all PDBs automatically inherit new versions; 2. Multiple PDBs share resources while implementing data isolation, supporting independent opening and closing, cloning and migration; 3. Backup and recovery can be carried out at the CDB level or PDB level, but partial recovery and cross-platform cloning need to pay attention to log synchronization and compatibility; 4. Permissions are divided into public users and local users, which are suitable for centralized management and application-specific scenarios; this architecture simplifies daily DBA tasks, but also puts forward higher requirements for security management, fault window control and monitoring and diagnosis.
Jul 07, 2025 am 12:32 AM
Yes,youcanpermanentlychangeNotepad’sdefaultfontandfontsizebyeditingtheWindowsRegistry.1.LocatetheregistrykeyHKEY_CURRENT_USER\Software\Microsoft\Notepad.2.ModifylfFaceNametosetthedesiredfont(e.g.,Consolas).3.AdjustiPointSizebyenteringthefontsizemulti
Jul 07, 2025 am 12:32 AM
The CSS attribute selector can apply styles based on the attributes and attribute values ??of the element to achieve precise control of specific elements. Style settings are performed by whether there are attributes, exact matches or partial matches attribute values, and combining multiple attribute conditions. For example: 1. When the attribute exists, select: a[download] matches all links with download attributes; 2. Exactly match attribute values: input[type="text"] only matches input boxes with type text; 3. Partial match attribute values: a[href*="example.com"] matches links containing keywords, img[src$=".jpg
Jul 07, 2025 am 12:31 AM
XMLnamespacesareessentialforavoidingnamingconflictsinXMLdocuments.Theyuniquelyidentifyelementsandattributes,allowingdifferentpartsofanXMLdocumenttocoexistwithoutissues:1)NamespacesuseURIsasuniqueidentifiers,2)Consistentprefixusageimprovesreadability,
Jul 07, 2025 am 12:29 AM
When encountering Docker problems, you should first locate the problem, which is problems such as image construction, container operation or network configuration, and then follow the steps to check. 1. Check the container log (dockerlogs or docker-composelogs) to obtain error information; 2. Check the container status (dockerps) and resource usage (dockerstats) to determine whether there is an exception due to insufficient memory or port problems; 3. Enter the inside of the container (dockerexec) to verify the path, permissions and dependencies; 4. Review whether there are configuration errors in the Dockerfile and compose files, such as environment variable spelling or volume mount path problems, and recommend that cleanbuild avoid cache dryness
Jul 07, 2025 am 12:29 AM
New features of C# improve the security, simplicity and maintainability of the code. First, Nullable reference types help prevent null reference exceptions through compile-time checking, such as using string? or null-forgiving operators for variables that may be null. Secondly, Records simplifies the creation of immutable models, automatically generates constructors, attributes and equality checks, and supports copy-modification mode. Finally, top-level statements reduce boilerplate code for small projects, allowing direct writing of entry logic without the need for explicit Main methods. These improvements make C# more modern and efficient.
Jul 07, 2025 am 12:28 AM
Oracleauditingenhancessecurityandcompliancebytrackingdatabaseactivitiesthroughdetailedlogs.1.Itmonitorsuseractionslikelogins,datachanges,andprivilegeusetodetectunauthorizedaccess.2.Itsupportscompliancewithregulationsbyrecordingaccesstosensitivedataan
Jul 07, 2025 am 12:28 AM
ThemaindifferencebetweenalocalandaremoteGitrepositoryisthatalocalrepositoryisstoredonyourownmachineforpersonaldevelopmentwork,whilearemoterepositoryishostedonlineforcollaboration.1.Alocalrepoallowsofflinework,storesallhistorylocally,andiswhereyouwrit
Jul 07, 2025 am 12:28 AM
MySQL deadlock is a common problem in concurrent operations, especially when multiple transactions modify multiple tables or the same set of records at the same time. Once a deadlock occurs, it will cause transaction blockage, system responses to slow down, and even affect user experience. The key to solving MySQL deadlocks is to understand its causes and avoid and deal with them by rationally designing transaction logic. 1. Understand the common causes of deadlocks. The essence of deadlocks is "looping for resources". When two or more transactions each hold part of the resources and try to obtain the resources held by the other party, it will enter a deadlock. After detecting this situation, MySQL will actively roll back one of the transactions and throw a deadlock error. Common causes include: multiple transactions access the same resource (such as tables, rows) in different orders.
Jul 07, 2025 am 12:26 AM
srcset is an attribute of tags in HTML that defines multiple image sources, allowing the browser to select the most appropriate image based on the device's screen size and resolution. 1. It improves page loading speed and user experience, avoiding unnecessary large image downloads or blurred displays. 2. Use the w descriptor to specify the image width. Combined with the sizes attribute, the browser can select the best image according to the layout width. 3. A pixel density descriptor such as 2x can be used to provide a clearer image for high-resolution screens. 4. When using it, src should be included as a fallback, and ensure that the image size is accurate and optimized well. Cross-device testing should be carried out to ensure the effect.
Jul 07, 2025 am 12:26 AM
