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Web Performance Optimization

WebPerformanceOptimization 技术不断演进，包括： - LazyLoading:延迟加载非必要的资源，提升页面加载速度。- CodeSplitting:将代码拆分成更小的部分，按需加载。- HTTP/3:新一代HTTP协议，提升了网络传输性能和安...

开发笔记 ·2024-08-31

rancher和 k8s的关系

Rancher是一个开源的容器管理平台，而Kubernetes（简称K8s）是一个开源的容器编排工具。它们之间的关系可以理解为：1.Rancher是基于Kubernetes构建的。Rancher提供了一个用户友好的管理界面，可以帮助用户轻松部署、管理和监控Kubernetes集群。它通过简化Kubernetes的配置和...

开发笔记 ·2024-08-29

git pull错误fatal: Need to specify how to reconcile divergent branches

错误提示fatal:Needtospecifyhowtoreconciledivergentbranches解决方法这个错误信息是因为在执行gitpull命令更新分支时，Git无法自动解决不同提交的冲突而导致的。在这种情况下，你需要告诉Git如何处理这些分支的改动。根据提示，你可以通过以下命令来指定处理方式：使用--r...

开发笔记 ·2024-07-12

Java Not InstanceOf

InstanceOf 关键字检查引用变量是否包含给定的对象引用类型。它返回布尔类型，所以我们也可以否定它们。本教程演示如何在Java中否定 InstanceOf 或使用 NotInstanceOf。instanceof 返回一个布尔值，因此否定它将返回 fal...

开发笔记 ·2024-07-05

ORA-48161: invalid input for ADR instance id

文档解释ORA-48161:invalidinputforADRinstanceidCause:AninvalidinputwaspassedinfortheADRinstanceid.TheADRinstanceidiseitherNULLortoolongofastring.Action:ChecktheADRin...

IT技术学习 ·2023-07-28

ORA-32043: recursive WITH clause needs an initialization branch

文档解释ORA-32043:recursiveWITHclauseneedsaninitializationbranchCause:AWITHclausequeryreferredtoitself(recursive)butdidnothaveabranchinaUNIONALLwithnoreferencestoit...

IT技术学习 ·2023-07-28

ORA-27503: IPC error attempting to cancel request

文档解释ORA-27503:IPCerrorattemptingtocancelrequestCause:Thisisanoperatingsystem/clusterinterconnecterror.Action:CheckthevalueoferrnoandcontactOracleSupportServices...

IT技术学习 ·2023-07-28

ORA-32486: unsupported operation in recursive branch of recursive WITH clause

文档解释ORA-32486:unsupportedoperationinrecursivebranchofrecursiveWITHclauseCause:TherecursivecomponentoftheUNIONALLinarecursiveWITHclauseelementusedanoperationthat...

IT技术学习 ·2023-07-28

ORA-29705: ACTIVE_INSTANCE_COUNT is string which is incompatible with the value in other instances

文档解释ORA-29705:ACTIVE_INSTANCE_COUNTisstringwhichisincompatiblewiththevalueinotherinstancesCause:ThevalueoftheACTIVE_INSTANCE_COUNTparametermustbethesameinallOra...

IT技术学习 ·2023-07-28

ORA-24909: call in progress. Current operation cancelled

文档解释ORA-24909:callinprogress.CurrentoperationcancelledCause:TheOCIcallwasinvokedwhenanothercallontheconnectionwasinprogress.Action:CheckiftheOCIcallissupportedw...

IT技术学习 ·2023-07-28

ORA-24053: PRIMARY_INSTANCE and SECONDARY_INSTANCE must be non-negative

文档解释ORA-24053:PRIMARY_INSTANCEandSECONDARY_INSTANCEmustbenon-negativeCause:OneofPRIMARY_INSTANCEorSECONDARY_INSTANCEwasnegative.Action:Specifynon-negativeintege...

IT技术学习 ·2023-07-28

ORA-32004: obsolete or deprecated parameter(s) specified for string instance

文档解释ORA-32004:obsoleteordeprecatedparameter(s)specifiedforstringinstanceCause:ObsoleteordeprecatedparametersforthisinstancetypewerespecifiedintheSPFILEorthePFIL...

IT技术学习 ·2023-07-28

ORA-55461: no distance information available

文档解释ORA-55461:nodistanceinformationavailableCause:Distanceinformationwasnotgeneratedduringrulesindexcreation.Action:RetryquerywithouttheSEM_DISTANCEoperatorand/...

IT技术学习 ·2023-07-28

ORA-39500: failed to notify CRS of a Startup/Shutdown event for database “string”, instance “string” (ignored)

文档解释ORA-39500:failedtonotifyCRSofaStartup/Shutdowneventfordatabase“string”,instance“string”(ignored)Cause:Theinstancewasunabletoobtainth...

IT技术学习 ·2023-07-28

ORA-56512: DRCP: Failed to synchronize RAC instances [string]

文档解释ORA-56512:DRCP:FailedtosynchronizeRACinstances[string]Cause:SomeoftheRACinstanceswerenotsynchronized.Action:Performthesameoperationsonallthefailedinstances....

IT技术学习 ·2023-07-28