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Java

Apache Kafka? ?? Java? ??? ?? ??

Estime-DrivenArchitectureInjavawithapachafkaenablesscalable, looselycoupledsystemsbyustemsingeventsforasynouscommunication.1. producerspublisheventStotopics, andConsumersReactDirectDirectDecies.2.kafkaprovideSdurable, partlegwithewithreplayab

Jul 29, 2025 am 02:02 AM

Enterprise Java ?? ?????? ?? ?? ??

UselayeredArchitectureWithMvCinThePresentationLayer, ServiceLayerPatternInbusinessLogic, anddaoIndataAccccencessurationofconcernsandmaintainability.2

Jul 29, 2025 am 02:02 AM

java ??? ??

Spring Security ? JWT? ?? Java? REST API ??

Springsecurity ? JWT? ???? ???? ???, ??? ?????? ? ?? ??? ??????? ?? ??? ? ?? ??? ????? ??? Java?? Restapi? ??? ?? ? ??? ?????. 2. ?? pom.xml? SpringBootweb, Springsecurity ? JJW ???? ?????. 3. ??? ?? ? ??? ??? ?? ??? ? LoginRequest ?? ???? ??????. 4. JWTUTIL ?? ???? ???? JWT? ???? ?? ???? ??????. ?? ?? ???? ?? ?? ??? ?? ????????. 5. CSRF? ??????? SecurityConfig ???? ????, ??? ?? ??? ????, ?? ?????? ???? JW? ??????.

Jul 29, 2025 am 02:01 AM

Jackson? GSON? ???? Java? JSON? ?? ????

Jackson? Gson? Java? ? ?? ?????? JSON? ???? ??? JSON? ?? ??? ?????. 2. ???? ?? Maven? ?? ???? ???????. Jackson? Jackson-Databind? ???? GSON? GSON? ?????. 3. ?? ??? ??? ???? Jackson? ObjectMapper? ?? ???? GSON? GSON ????? ?? ?????. 4. ?? ???? ?? ? ? Jackson? typereference? ???? GSON? typetoken? ?????. 5. ??? ?? ???? Jackson? ??? ?? (? : @jsonproperty, @jso)? ?????.

Jul 29, 2025 am 02:01 AM

java json

JFR ? VisualVM?? Java ?? ???? ?

JFR ? VisualVM? Java ?? ??? ???? ?????. JFR? JVM ?? ???? ???? ?? ?? ??? ??? VisualVM? ??? ??? ?????. 1. JFR? ????? ??? -XX : Flightrecorder ?? ??? ????? ?? ?? JCMD ??? ???? ???????. ?? ??? ???? ?? ?? ???? ???? ???? ?? ????. 2. JCMD ??? ???? ??? ?? ??? ?? ? ?? ??? ?? ?? ??? ????? Custom .JFC ??? ?? ?? ???? ???? ?? ? ? ????. 3. VisualVM? ???? ?? ??? ???? JFR ????? ???????. .jfr ????? ? ? ??? ????? ??? ? ????.

Jul 29, 2025 am 01:32 AM

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Junit 5 ? Mockito? ?? Java? ??? ? ?? ? ?? ???

TomasterJavatestingwithJunit5andMockito, useUnittestSforisoLatedCodeWithMockEddependenciesandIntEgrationTestSforRealComponentIntercations.1.UnitTestSfocusOnsingLemethoDSORSUSING@mockand@injectMockStoisolateLogic.2.integrationteststestsTestSvalidateWor

Jul 29, 2025 am 01:24 AM

Junit 5 ? Mockito? ?? Java? ?? ??? ? ??

Junit5? Mockito? ???? ?? ???? ?? ????? ???? ??????. 1. @Mock? ?? Mock Object? ????. @InjectMocks ??? ? ????? ?????. 2. ????? ??? ???? ?? (). 3. ?? ????? ??????? ?? ??? ??? ? ????. 4. ??? ??? ????, ??? ?????? ???, ?? ???? ?????. 5. AsserTall ()? ???? ?? ?? ???? @nested? ??? ??? ? ???? ????? ?? ??? ????? ?????.

Jul 29, 2025 am 01:20 AM

java ?? ???

Java 21? ?? ?? ? ??? API

Java21? ?? ?? ? Memoryapi? ???? JNI? ???, ?? ?? ? ??? ?? ?? ??? ?????. 2. ?? ?? ??? ??? ???? (??? ???), valuelayout/memorylayout (??? ????), Symbollookup (?? ?? ??), ?? ?? ? ??? ?? (?? ?? ??), Arena (??? ???? ??); 3. ??? Java ??? C ??? ????? ???? ???? ???? ??? ?? ??? ???? ????? ???? ?? ? ???? ?? ? ? ????. 4. JN? ????

Jul 29, 2025 am 01:16 AM

java api

AWS Lambda??? ???? Java

Java? ???? Awslambda?? ???? ????? ???? ?? ?? ???? ????? ?? ???? ??????. 1. ??? ?? ? ?? ??? ?? Java17 (Corretto)? ??????. 2. Snapstart (Java11 ? 17? ??)? ????? ?? ??? ?? 90%?? ????. 3. ProvisionEdConcurrency? ???? ????? ????? ??? ??? ?????. 4. Mavenshade ?? Gradleshadow ????? ???? ?? ???? ????? ?? ???? ??? ?????. 5. Quarkus ? Micronaut? ?? ??? ??? ??? ????? Graalvm? ???? ??? ????? ?? ?? ???? ?????. 6.

Jul 29, 2025 am 01:10 AM

java ???? ??

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

AuthenticationVectionSuredity, while-eauthorizationDeterminesAccessrights.2.addspring-boot-starter-securityDependencyAnfigureCurityConfigCustOmsCustomcurityFilterChainAnduserDetailsServiceUsingBcryptPasswordOderInProduction.30forrestapis, di

Jul 29, 2025 am 01:03 AM

RabbitMQ? ?? ??? ?? ???

ToacheieveHigh-PerformancerAbbitMqMessagingInjava, youMustOptiMizeBothClientAndandBrokerConfigUrations.1.UseConnectionAndchannelPoolingViacachingConnectionFactoryWithAceDChannelPoolTubeOverOverHead.2.enablePublisherConFirmSynousLynounSlyAntlyBatchConf

Jul 29, 2025 am 12:47 AM

Java? ??? ?? ? CQRS ??

??? ?? ? ? CQR? ??? ???? ???? ?????. 1. ??? ?? ?? ??? ??? ??? ??? ???? ??? ?? ? ?? ?? ??? ????? ?? ???? ??????. 2. CQRS? ?? ?? ??? ????? ?? ?? ? ?? ??? ????? ?? ???? ?????. 3. Java?? axonframework? springboot? ?? @aggregate? ???? ??, @eventsourcinghandler ???? ?? ? @eventhandler? ?? ??? ?????. 4. ?? ??? ??? ?? ?? ? ?? ??? ??? ????? ???? ??? CRUD ????? ???? ????. 5. ??? ???, ?? ??, ?? ??? ?? ?

Jul 29, 2025 am 12:34 AM

java

? ?? ??? ? ?? ??? ?? ?? Java Docker ??? ???

Eclipse-Temurin : 17-Jre-Alpine ?? -slim? ?? ?? ?? ???? ???? ??? ????. 2. ?? ??? ???? ??? ? ?? ??? ???? ?? ??? ?? ??? ?? ???? ??? ???????. 3. JAR ??? ??? ?????, ???? ???? ????, ??? ?????, SpringBoot ?? JAR? ??????. 4. ??? ??? ?? (CDS)? ????? ?? ??? ??? ??? ????. 5. ???? ??? ??? ???? ?? -xx : usecontainersupport ? -xx? ?? JVM ????? ?? ??? ?????. 6. Graalvm Native Mirrors? ???? ?? ?? ?? ??? ?? ?? ????? ??????.

Jul 29, 2025 am 12:27 AM

java docker

Java? ?? ?? ?? ??

usespecificexceptionsinsteadofgenericoneStoenablepreciseErrorHandlingandimprovedeBugging.2.CreateCustomExceptionsfordomain-specificerStoenHanceReadability, enableTargetEdCatchBlocks ? ClarifyApicOntracts.3.USTRETTY-WITH-RESOUTOMINGOMANAGEME

Jul 29, 2025 am 12:16 AM