After following, you can keep track of his dynamic information in a timely manner
ToconfigureSSLcertificatesinIIS,generateaCSR,importthecertificate,andsetupHTTPSbindings.First,createaCSRviaIISManagerunderServerCertificates,fillintheDistinguishedNamePropertieswithcorrectdomainandorganizationdetails,andsavetherequesttosubmittoaCA.Se
Aug 01, 2025 am 04:32 AM
Java21,releasedinSeptember2023,isalong-termsupport(LTS)versionthatintroducesmajorimprovementsfordevelopersandenterprises.1.VirtualThreadsarenowfinal,enablinghigh-throughputconcurrencywithsimple,synchronous-stylecode,drasticallyreducingthecomplexityof
Aug 01, 2025 am 04:31 AM
The optimization of MySQL in ERP systems requires four aspects: structural design, parameter adjustment, regular maintenance and avoiding performance traps. 1. Reasonably design the database structure, use appropriate standardization, establish indexes and avoid frequent query of large fields; 2. Adjust configuration parameters such as innodb_buffer_pool_size, max_connections, etc. to adapt to business load; 3. Regularly analyze and optimize tables, enable slow query logs, and use monitoring tools to continuously track performance; 4. Avoid using functions in the WHERE clause, reduce SELECT*, adopt batch operations, and control transaction granularity, thereby improving overall system efficiency.
Aug 01, 2025 am 04:31 AM
HTMLLinting is necessary because it can detect problems such as irregular label nesting, spelling errors, unclosed labels in advance, and unify the code style; common tools include HTMLHint, Tidy, eslint-plugin-html, and Stylelint plug-ins; the integration methods include editor real-time prompts, construction process checks, and automatic fixing of some problems; configuration suggestions include attribute quotation marks, lowercase tags, closed tags, and control nesting levels, but the rules should not be too many to avoid affecting the development experience.
Aug 01, 2025 am 04:30 AM
Install Squid: Use sudoaptinstallsquid on Ubuntu/Debian, use sudodnfininstallsquid on CentOS/RHEL, and start the service. 2. Configure basic settings: Edit /etc/squid/squid.conf, optionally change http_port, add acl definitions to allow networks such as 192.168.1.0/24, and ensure that the http_accessallow rule is before denyall. 3. Restart Squid and verify: Use sudosystemctlrestartsquid and check the end through ss or netstat
Aug 01, 2025 am 04:28 AM
ExecutorService is suitable for simple task submission and thread resource management, but does not support non-blocking callbacks and task combinations; 2. CompletableFuture supports rich asynchronous orchestration operations, such as chain calls, task combinations and exception handling, which are suitable for complex asynchronous processes; 3. The two can be used in combination. It is recommended to use CompletableFuture to implement asynchronous logic, and cooperate with custom ExecutorService to control execution resources to achieve efficient and maintainable concurrent programming.
Aug 01, 2025 am 04:26 AM
Acquisition of thread dumps can be collected multiple times through jstack, kill-3, JConsole or SpringBootActuator and other methods; 2. In the thread state, RUNNABLE may correspond to high CPU or infinite loops, BLOCKED indicates lock competition, WAITING/TIMED_WAITING is a waiting state, so you need to pay attention to exception accumulation; 3. Deadlock will be clearly indicated by jstack, which is manifested as a loop waiting lock, which should be solved by unified lock sequence or reduced lock granularity; 4. High CPU threads need to combine top and hexadecimal conversion positioning to check whether there are regular backtracking, serialization and other time-consuming operations in the call stack; 5. A large number of BLOCKED threads point to the same lock object to indicate lock competition
Aug 01, 2025 am 04:24 AM
A headless CMS (Headless CMS) is a system that only provides back-end content storage and delivers content through APIs (such as REST or GraphQL). It does not include a front-end display layer. Typical representatives include Contentful, Sanity, Strapi, etc.; 2. The reasons why front-end developers prefer headless CMS include free selection of any front-end technology stack, improving static site performance, realizing multi-channel content distribution, and clear separation of responsibilities; 3. The steps to integrate headless CMS are: setting a content model (such as defining blogPost type), creating and publishing content in the CMS background, obtaining content through fetch or SDK in the application, rendering data in components, and optionally configuring an update mechanism.
Aug 01, 2025 am 04:22 AM
Stop using the faulty system immediately to prevent further corruption; 2. Use LiveUSB/CD to boot into a read-only environment; 3. Determine the fault type: physical damage needs to avoid repeated power-on and consider professional recovery or use ddrescue cloning. File system logic errors can try FSK repair or read-only mount, and boot problems can be accessed directly through the Live environment; 4. Priority is given to using ddrescue to complete cloning of the faulty disk to protect the original data before recovery; 5. Mount the partition from the cloned disk or Live environment and use CP or rsync to copy the data to external storage; 6. For deleted or seriously damaged files, use TestDisk to restore the partition or PhotoRec according to file characteristics; 7.
Aug 01, 2025 am 04:20 AM
Avoid frequent splicing of strings and conversion types for performance improvements. 1. Use strings.Builder or pre-allocated byteslice instead = splicing; 2. Cache the conversion results of strings and byteslice or use a type to reduce the number of conversions; 3. Use byteslice first when modifying the content frequently; 4. Use strings.Contains, HasPrefix, HasSuffix and other optimization functions first when determining the existence of substrings. These methods can significantly improve processing efficiency and reduce memory overhead.
Aug 01, 2025 am 04:17 AM
ES2024introducespracticalimprovementsandupcomingfeaturesareprogressingthroughTC39stages.1.String.prototype.includes()nowformallysupportsfromIndexforcase-sensitivesearch.2.New“bycopy”arraymethods—toReversed(),toSorted(),toSpliced(),andwith()—enableimm
Aug 01, 2025 am 04:15 AM
CodesplittinginReactimprovesperformancebyloadingcodeonlywhenneeded.1)UseReact.lazyandSuspenseforroute-basedsplittingtoreduceinitialload.2)Applycomponent-levellazyloadingforheavy,non-criticalcomponentslikemodalsorcharts.3)Handlenamedexportswithwrapper
Aug 01, 2025 am 04:14 AM
Nginxactsasareverseproxy,hidinginternalportsandallowingmultipleappsononeserver;2.IthandlesSSL/TLSterminationefficientlyviaLet’sEncrypt,offloadingencryptionfromNode;3.ItservesstaticfilesfasterthanNodebydirectlymanagingrouteslike/static/;4.Itenablesloa
Aug 01, 2025 am 04:13 AM
How to use OptimizerHints? 1. OptimizerHints is written in the comment block of the SQL query, starting with / and ending with /, for example: SELECT/ NO_INDEX(emp,idx_salary)/*FROMemployeesempWHEREsalary>50000; 2. The prompt can be placed in the SELECT, INSERT, UPDATE or DELETE statement, and act on a specific part; 3. Common prompts include NO_INDEX forcing the specified index, USE_INDEX forcing the specified index, SET_VAR to set session variables, JOIN_FIXED_ORD
Aug 01, 2025 am 04:13 AM
"SaveforWeb(Legacy)"inPhotoshopoptimizesimagesbybalancingqualityandfilesizeforwebuse.1)Itallowschoosingtherightformat—JPEGforphotos,PNGforgraphicswithtransparency,andGIFforsimpleanimations.2)Userscanadjustcompressionsettingsviaslidersorcolo
Aug 01, 2025 am 04:11 AM
UsealightweightrouterlikeChiforfastroutingwithradixtreeefficiency.2.OptimizeJSONhandlingbyusingproperstructtags,avoidingmap[string]interface{},andconsideringjsoniterforbetterperformance.3.Leverageconcurrencywiselywithgoroutinesfornon-blockingtasks,us
Aug 01, 2025 am 04:10 AM
mix-blend-mode is an attribute in CSS that controls the mixing method of element content and background, and realizes color interaction effects through different blending modes. Common modes include multiply (dark, suitable for dark element overlay), screen (bright, suitable for light element overlay), overlay (high contrast overlay), and difference (dynamic inversion). When using it, you need to ensure that there is visible content behind the elements and pay attention to performance, readability and compatibility issues. For example, set .element{mix-blend-mode:multiply;} to apply the effect.
Aug 01, 2025 am 04:09 AM
1. Determine the data retention strategy and clarify the data retention cycle according to business or compliance requirements, such as 30 days of logs, 180 days of user behavior, and long-term financial data retention; 2. Designing cleaning scripts recommends using batch deletion method, using DELETE statements combined with LIMIT to avoid table locks, and prioritizing easy-to-maintenance languages such as Python; 3. Automated execution can be achieved through crontab timing tasks, and logs must be recorded and peak periods must be avoided; 4. Before cleaning, data backup mechanism must be established, such as archive tables, backup databases or soft deletion methods to ensure that operations are traceable. The entire mechanism needs clear strategies, safe scripts, and controllable execution to achieve a balance between data value and storage cost.
Aug 01, 2025 am 03:56 AM
Photoshop’s3Dtoolswereusefulforintegrating3Dmodelsinto2Dcompositions.1)Userscouldimport3DfilesandadjustlightingwithtoolslikeInfiniteLightorSpotlighttomatchreal-worldscenes.2)Groundshadowsandreflectionswerefine-tunedviathe3Dpanelforrealisticplacementi
Aug 01, 2025 am 03:55 AM
Using the string concatenation operator ( ) inefficient in loops, better methods should be used instead; 1. Use StringBuilder or similar variable buffers in loops to achieve O(n) time complexity; 2. Use built-in methods such as String.Join to merge collections; 3. Use template strings to improve readability and performance; 4. Use pre-allocated or batch processing when a loop is necessary; 5. Use operators only when concatenating a small number of strings or low-frequency operations; ultimately, appropriate strategies should be selected based on performance analysis to avoid unnecessary performance losses.
Aug 01, 2025 am 03:53 AM
Javaexceptionhandlingensuresrobustandmaintainableapplicationsbyproperlymanagingruntimeerrors.1.TheThrowableclassistheparentofallexceptions,withErrorforJVM-levelissueslikeOutOfMemoryErrorandExceptionforrecoverableconditions.2.Checkedexceptions(e.g.,IO
Aug 01, 2025 am 03:50 AM
Redirects(301/302)changethebrowserURLandareSEO-friendlyformovedcontent;rewritesinternallymapURLswithoutbrowserredirection.2.Usereturn301forfast,clearredirectslikeforcingHTTPS,redirectingwww,ormovingoldpathstonewones.3.Userewritewithlastorbreakinlocat
Aug 01, 2025 am 03:48 AM
Choosing the right collection type can significantly improve C# program performance. 1. Frequently insert or delete the LinkedList in the middle, 2. Quickly search using HashSet or Dictionary, 3. Fixed element count to use arrays first, 4. Select HashSet when unique values are required, 5. Frequently searching using Dictionary or SortedDictionary, 6. Consider ConcurrentBag or ConcurrentDictionary in multi-threaded environment.
Aug 01, 2025 am 03:47 AM
JMSwithActiveMQenablesasynchronous,looselycoupledcommunicationinenterpriseapplicationsbyusingmessaging;thistutorialdemonstratessettingupActiveMQandimplementingapoint-to-pointmessagingexampleusingtheJMSAPI.1.JMSisaJavaAPIsupportingtwomodels:Point-to-P
Aug 01, 2025 am 03:42 AM
InstallHomebrewifnotalreadyinstalled,thenrunbrewtapmongodb/brewandbrewinstallmongodb-communitytoinstallMongoDB.2.Starttheservicewithbrewservicesstartmongodb-community,whichrunsmongodinthebackgroundandenablesauto-startonboot.3.ConnectusingtheMongoDBsh
Aug 01, 2025 am 03:41 AM
Real-time decisions are inseparable from SQL because decisions are made wherever the data is. SQL, as a tool for directly manipulating data, is irreplaceable in real-time data processing and instant insights. Specifically reflected in: 1. Real-time query: filter the latest records through WHERE conditions, combine index optimization performance, and quickly obtain the current data state; 2. Streaming aggregation: Use streaming SQL engine to realize side-by-side calculations, such as FlinkSQL processing continuous inflow data, and use sliding window to count real-time indicators; 3. Decision rules embed SQL: write fixed rules directly into SQL statements, such as user tag updates, and automatically executes with event triggering mechanism; 4. Performance tuning: including reasonable indexing, reducing JOIN, using OFFSET with caution, controlling return fields, etc.,
Aug 01, 2025 am 03:38 AM
Toamendthemostrecentcommitmessage,usegitcommit--amend-m"Yournewcommitmessage"ifthecommithasn’tbeenpushed;thisrewritesthelocalcommithistorywiththenewmessage.2.Toeditthemessageinyourdefaulteditor,rungitcommit--amendwithoutthe-mflag,allowingyo
Aug 01, 2025 am 03:34 AM
Disable sessions and CSRF, use SessionCreationPolicy.STATELESS and csrf().disable() to achieve REST-friendly and secure; 2. Use JWT for stateless authentication, generate and verify tokens containing user roles and expiration time through JwtUtil; 3. Create a JwtAuthenticationFilter to intercept requests, parse the Bearer token in the Authorization header, and store the authentication information into the SecurityContextHolder after verification; 4. Use @PreAuthorize("hasRole('ADMIN')"
Aug 01, 2025 am 03:31 AM
HyperLogLog is an efficient algorithm for estimating the number of different elements in the dataset. Its core principles include: 1. Mapping the input elements into binary strings through a hash function; 2. Observing the maximum number of leading zeros in these strings; 3. Estimating the number of unique terms based on the probability of long strings of zeros appearing. It provides approximate counts with minimal memory (usually only a few KB) with an error of about 2%, and is suitable for large-scale data scenarios such as web analysis, database optimization, network monitoring and advertising technologies. Multiple HyperLogLogs can be combined and suitable for distributed systems. However, it does not apply if precise counting, processing small datasets, or if unique elements are required.
Aug 01, 2025 am 03:20 AM
Adjusting the XFS file system size only supports online expansion and does not support shrinkage. 1. Before expanding capacity, you need to back up data, check the disk partition structure and confirm that the underlying device has been expanded; 2. Use the xfs_growfs command to expand the file system, which can be operated online without uninstalling; 3. If you use LVM, you need to expand the logical volume first and then execute xfs_growfs; 4. XFS does not support shrinkage, and if you need shrinkage, you can only achieve it by backing up, rebuilding a small-capacity file system and restoring data.
Aug 01, 2025 am 03:18 AM
