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Java

Java ? Spring Cloud Gateway? API ????? ??

Java ?? API ?????? ????? SpringCloudgateway? ???? ?? ????? ?? ??? ??????. 1. SpringInitializr? ?? ????? ??? WebFlux, Gateway, EureKaclient ? Actuator ???? ?????. 2. application.yml?? ??? ??? ???? ?? URI ?? Eureka ?? ??? ?? ?? ???? ?????. 3. ?? ??? ???? JWT ??? ???? Redis? ?? ?? ??? ???? IP ? ?? 10 ?? ?? ? 20 ?? ???? ?????. 4. Resilience 4J ?? ?? ???? ???? ?? ?? ???? ??? ?????.

Jul 27, 2025 am 02:25 AM

Java ??? ??? ? ??? ?? ?? ???

TheJavaMemoryModel (JMM)? guaranteesinmultithreadedprograms; 1. theHappens-beforeRelationshipensUresThatHitHatWritSwritSwritSwritSwritesHatWritSwrIteSwroutShroughRoughroughroughlikeProgramorder, MoniterLocks, VolatileVariable, ThreadStart/Join, a

Jul 27, 2025 am 02:22 AM

??? ????? Java ??? API? ?? ?? ???

javastreamsapienablestfunctional-styledataprocessingbycreatingstreamstreamsfrom collections, ??, ?? ??, ??, intermediateoperations like-ransformdatalazily, count, count, orfirstttopresseres

Jul 27, 2025 am 02:16 AM

Java ?? ?????? ?????? ?? ???

????? indexesonfrequeriedcolumnsinsinsinsinsinsinwhere, ??, ??? CompositeIndexesformulti-columnfilters, whileoavoidingover-indexingTopRitePorformancedEgradation;

Jul 27, 2025 am 02:15 AM

Java Persistence Layer?? ?????? ?? ???

1. n 1 ?? ??? ????? joinfetch ?? @entitygraph? ???????. 2. ??? ? ?? ???? ?? ?? ?? ??? ?????. 3. ?? ?? ?? ???????? ??? ??? ?? ? ?????? ????? ??????. 4. DTO ????? ???? ??? ?? ? ??????. 5. ?? 2 ?? ??? ? ?? ??? ????? ?????. 6. SQL ??? ?? ??? ???? ?? ? SQL ??? ?????. 7. ?? SQL? ???? ??? ??? ?? ???? ??????. 8. ???? ?? ??? ?? ?????? ???? ??? ?? ?? ??? ?????. ???? ??? ?????? ??? ??? ???, ??? ??? ???, ????? ???? ??? ?? ??? ???? ????? ????? ?? ??? ????? ????? ????.

Jul 27, 2025 am 02:04 AM

JVM (Java Virtual Machine) ??? ?? ?? ???

thejvmenablesjava? "WriteOnce, Runanywhere"??? CODECUTECUTECHICKEINTERALCOMPONENTS.1) ??? ?? (?? ???, ??, ?? ????)?? .classFilesInadelegationHierarchy, StoringClassMetAdaTainTheMethodArea.2) RuntimeDataar

Jul 27, 2025 am 01:55 AM

OWASP Top 10 ????? Java ? ?? ????? ???? ??

usepreparedStatementandParameterizedQueriestOpreventIngement; 2. IMPLESSPRINGSECURITYWITHSTORMPASSWORDHASHINGANDAFFORECUEREATETICATIONS;

Jul 27, 2025 am 01:54 AM

Graalvm ?? ??? : Java ?? ????? ?? ??????

GraalvMnativeImage? AOT ???? ?? Java ?? ????? ?? ?? ??? ???? ?? JVM ???? ?? ?? ? ?? ??? ?? ??? ?????. 1. ?? ??? ?? ??? ???? ? ???? ???? ?????. 2. ??? ???? 30%?? 70% ?????. 3. ?? ???? ? ??? JVM? ?? ? ??? ????. 4. ??? ???? ?? ??? ?? ???. ?? : 1. ??, ?? ??? ?? ?? ??? ???????. 2. ??? ??? resource-config.json? ?? ????????. 3. ?? ??? ??? ??????. 4. ASM? ????? ???? ??? ??? ???? ?? ?????? ???? ????. SpringBoot3 ? Quarkus? ?? ?? ??? ??

Jul 27, 2025 am 01:53 AM

java ??

??? Java ?? ????? ?? ????? ?????????

??? Java ?? ????? ???????? ??? ??? ?? ????? ???? ?? ? ?? ??? ???? ????. 1. ?? ???? ??? ???? ?? ?? ? ?? ?? ? ? ?????? ??? ?????. 2. ?? ??? ???? ??, ?? ?? ?? ? ??? ?? ??? ?????. 3. ?? ??? ? ?? ??? ???? ?? ?? ?? ? ?? ??? ? ?? ?? ??? ??? ?????. 4. ???? ??? ??? ?? ??? ?? ?? ?? ???? ???? ?????. 5. ??? ??????? ?? ???? ???? ?? ???????? ??? ?? ? ?????? ??? ??? ? ?????. 6. ?? ? ???? ??? ???? ?? ?? ??? ? CI ??? ??? ???????. ?? ??? ??? ??? ???? ??? ?? ????? ???? ???????.

Jul 27, 2025 am 01:52 AM

Kubernetes?? Java ?? ???? ??? ??????

setKubernetesmemorylimitsanduse-xx : maxrampercentage = 75.0toensurejvmheapstayswithincontainerlimits, 20–25%HeadroomfornativeMemory.2.useg1gcforlatency-sensitiveApps (-xx : xx : xx : xx : xx : USEG1GC-XX : MAXGCPAUSEMILLIS = 200) ORZGC/SHENANDOAHINJAVA11 FORLOWPAUSTIME, WH

Jul 27, 2025 am 01:45 AM

Java? ?? : Java 21? ??? ??

Java21, anltsrelease, ?? Modernizetheplatform.1

Jul 27, 2025 am 01:37 AM

Java 'Final'??? ? ??? ??

???? Java?? ??? ??? ?? ????. ?? ??? ? ?? ? ?? ??? ?? ? ??? ??? ?????? ????? ????. 2. ?? ??? ??, Final? ?? ???? ??????. ?? ??? ?? ??? ????? ?? ??? ??? ?? ? ? ????. 3. ??? ??? ????????. ???? ????? ????, ?? ??? ???, ?? ?? ??, ??? ??? ? ?? ??? ??? ???? ????. 4. ??? ?? ??? ?? ? ??, ?? ?? ? ???? ?? ??? ?????? ?? ??? ???????. 5. ?? ???? ??? ?? ???? ???? ????? JMM ??? ?? ??? ????. 6. ???? ??? ????? ???? ??? ??? ??? ??? ????. 6. ???? ??? ????? ???? ??? ??? ????. 5. ?? ???? ??? ???? ????? JMM ??? ??? ?????. 6. ???? ??? ????? ???? ??? ??? ????.

Jul 27, 2025 am 01:33 AM

`httpclient '? ???? Java?? REST ????? ??

Java11 ??? ?? ? httpclient? ??? REST ????? ??? ?????. 1. httpclient.newbuilder ()? ???? ?? ??, ??? ?? ???? ??? ??? ????? ????? ????. 2. httprequest.newbuilder ()? ?? URI, GET/POST/PIT/DELETE ??? ? BODYPUBLISHER ()? ???? ?? ?? ??? ??? ????. 3. httpresponse.bodyhandlers? ???? ?? ??? ???? ???, ?? ?? ??? ???? ?????. 4. ??? ??? sendasync ()? ?? apply? ?? ? ??? ?? ?????.

Jul 27, 2025 am 01:28 AM

Java ???? ???? ?? ?? ??

@ControlLerAdViceForgloBalexception HandlingTocentRorRorRorRorRorRorRorRorSponsEsandReducEduplication.2.defineastructuredErrorRorrorRorReSponsEdTowIthCode

Jul 27, 2025 am 01:14 AM