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Server-Side Rendering (SSR) 与 Static Site Generation (SSG)

Server-SideRendering(SSR) 和 StaticSiteGeneration(SSG) 都是优化页面加载速度和SEO的重要技术。 - Next.js:一个React框架,支持SSR和SSG。- Nuxt.js:一个Vue.js框架,支持SS...

可视化portainer

​Portainer是一个可视化的容器镜像的图形管理工具,利用Portainer可以轻松构建,管理和维护Docker环境。而且完全免费,基于容器化的安装方式,方便高效部署。​且支持多种docker编排方式,包括单机、dockerswarm、k8s等。官网:https://www.portainer.io/安装文档:ht...
开发笔记 ·2024-08-28

hadoop中Combiner的作用是什么?

  在Hadoop中,Combiner的作用是在MapReduce过程中对Mapper阶段输出的数据进行局部合并,以减少数据传输量,提高效率。Combiner通常用于一些可以局部聚合的操作,例如对Mapper输出的键值对进行计数、求和、平均值等。通过使用Combiner,可以将部分数据的处理工作从Reducer之前转移...

loadrunner 场景设计-集合点设置

1 作用通过让多用户在同一时间点上进行并发操作来测试系统的并发处理的能力2 实现通过集合点函数来实现。注意:集合点经常和事务结合起来使用。集合点只能插入到Action部分,vuser_init和vuser_end中不能插入集合点。所以,如果要模拟并发登录,那么必须把登录操作放到Action中3&nb...

mysql general_log日志

general_log日志showvariableslike'general_log';#查看general_log开启情况showvariableslike'general_log_file';查看日志文件存储位置:showvariableslike'log_output';查看日志输出类型table/fileset...
开发笔记 ·2024-07-09

hadoop中combiner是什么

Combiner(合并器)在Hadoop中,Combiner(合并器)是一个可选的阶段,用于优化MapReduce任务的性能。它是在Map阶段输出之后、规约(reduction)之前执行的。Combiner的作用是在Map任务的本地节点上对Map阶段的输出进行局部聚合。它接收Map任务输出的键值对,并将具有相同键的键值...
开发笔记 ·2024-01-23

ORA-29309: export dump file was generated by different version of DBMS_PITR package

文档解释ORA-29309:exportdumpfilewasgeneratedbydifferentversionofDBMS_PITRpackageCause:TheversionofDBMS_PITRisdifferentfromtheversionofthecloneddatabase.Action:Loadt...
IT技术学习 ·2023-07-28

ORA-53048: definer name DICOM is not allowed in a private dictionary

文档解释ORA-53048:definernameDICOMisnotallowedinaprivatedictionaryCause:TheoperationfailedbecausethedefinernameDICOMwasfoundintheprivatedictionary.Action:Correctthe...

ORA-53432: The DICOM object attribute string has invalid definer name.

文档解释ORA-53432:TheDICOMobjectattributestringhasinvaliddefinername.Cause:AprivateattributedefinerforaprivateattributecontainedinthisDICOMobjecthadinvalidcharacter...

ORA-31014: Attempted to delete the root container

文档解释ORA-31014:AttemptedtodeletetherootcontainerCause:Anattemptwasmadetodeletetherootcontainerinthehierarchicalindex.Action:Donotdeletetherootcontainer.ORA-31014...

ORA-39931: XML Schema string Owner: string not fully contained in the transportable set.

文档解释ORA-39931:XMLSchemastringOwner:stringnotfullycontainedinthetransportableset.Cause:Informationalmessagetodescribeafailureduringtransportablecontainmentchecki...

ORA-38776: cannot begin flashback generation – recovery area is disabled

文档解释ORA-38776:cannotbeginflashbackgeneration–recoveryareaisdisabledCause:Duringadatabasemount,theRVWRprocessdiscoveredthattherecoveryareawasdisabled.DB_RE...

ORA-12508: TNS:listener could not resolve the COMMAND given

文档解释ORA-12508:TNS:listenercouldnotresolvetheCOMMANDgivenCause:dbyincompatibleOracleNetorNet8versions.Donotincludeinerrormanual.Action:Thisisnotseeninnormaluseof...

ORA-31478: could not detach LogMiner session after change set advance

文档解释ORA-31478:couldnotdetachLogMinersessionafterchangesetadvanceCause:FailureduringdetachfromaLogMinersessionaftersuccessfuladvanceofanasynchronouschangeset.Thi...

ORA-06034: NETDNT: connect failed, partner exited unexpectedly

文档解释ORA-06034:NETDNT:connectfailed,partnerexitedunexpectedlyCause:ConnectionwithhostnodewasmadebutpartnerabortedAction:Makesureobject(see06031,above)isworking(f...
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