└── largescale ├── .gitignore ├── build.gradle.kts ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle.kts └── src ├── main ├── java │ └── com │ │ └── vsfe │ │ └── largescale │ │ ├── LargescaleApplication.java │ │ ├── controller │ │ └── LargeScaleController.java │ │ ├── domain │ │ ├── Account.java │ │ ├── Transaction.java │ │ └── User.java │ │ ├── repository │ │ ├── AccountRepository.java │ │ ├── TransactionRepository.java │ │ └── UserRepository.java │ │ └── service │ │ └── LargeScaleService.java └── resources │ └── application.yaml └── test └── java └── com └── vsfe └── largescale └── LargescaleApplicationTests.java /largescale/.gitignore: -------------------------------------------------------------------------------- 1 | HELP.md 2 | .gradle 3 | build/ 4 | !gradle/wrapper/gradle-wrapper.jar 5 | !**/src/main/**/build/ 6 | !**/src/test/**/build/ 7 | 8 | ### STS ### 9 | .apt_generated 10 | .classpath 11 | .factorypath 12 | .project 13 | .settings 14 | .springBeans 15 | .sts4-cache 16 | bin/ 17 | !**/src/main/**/bin/ 18 | !**/src/test/**/bin/ 19 | 20 | ### IntelliJ IDEA ### 21 | .idea 22 | *.iws 23 | *.iml 24 | *.ipr 25 | out/ 26 | !**/src/main/**/out/ 27 | !**/src/test/**/out/ 28 | 29 | ### NetBeans ### 30 | /nbproject/private/ 31 | /nbbuild/ 32 | /dist/ 33 | /nbdist/ 34 | /.nb-gradle/ 35 | 36 | ### VS Code ### 37 | .vscode/ 38 | -------------------------------------------------------------------------------- /largescale/build.gradle.kts: -------------------------------------------------------------------------------- 1 | plugins { 2 | java 3 | id("org.springframework.boot") version "3.3.4" 4 | id("io.spring.dependency-management") version "1.1.6" 5 | } 6 | 7 | group = "com.vsfe" 8 | version = "0.0.1-SNAPSHOT" 9 | 10 | java { 11 | toolchain { 12 | languageVersion = JavaLanguageVersion.of(17) 13 | } 14 | } 15 | 16 | configurations { 17 | compileOnly { 18 | extendsFrom(configurations.annotationProcessor.get()) 19 | } 20 | } 21 | 22 | repositories { 23 | mavenCentral() 24 | } 25 | 26 | dependencies { 27 | implementation("org.springframework.boot:spring-boot-starter-data-jpa") 28 | implementation("org.springframework.boot:spring-boot-starter-validation") 29 | implementation("org.springframework.boot:spring-boot-starter-web") 30 | implementation("org.apache.commons:commons-lang3:3.17.0") 31 | implementation("org.apache.commons:commons-collections4:4.4") 32 | implementation("commons-codec:commons-codec:1.17.1") 33 | compileOnly("org.projectlombok:lombok") 34 | runtimeOnly("com.mysql:mysql-connector-j") 35 | annotationProcessor("org.projectlombok:lombok") 36 | testImplementation("org.springframework.boot:spring-boot-starter-test") 37 | testRuntimeOnly("org.junit.platform:junit-platform-launcher") 38 | } 39 | 40 | tasks.withType { 41 | useJUnitPlatform() 42 | } 43 | -------------------------------------------------------------------------------- /largescale/gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/VSFe/handing-large-scale-data-be/9cb8505278bd6e9ddd4667361e7728aa0116327d/largescale/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /largescale/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip 4 | networkTimeout=10000 5 | validateDistributionUrl=true 6 | zipStoreBase=GRADLE_USER_HOME 7 | zipStorePath=wrapper/dists 8 | -------------------------------------------------------------------------------- /largescale/gradlew: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # 4 | # Copyright © 2015-2021 the original authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | # SPDX-License-Identifier: Apache-2.0 19 | # 20 | 21 | ############################################################################## 22 | # 23 | # Gradle start up script for POSIX generated by Gradle. 24 | # 25 | # Important for running: 26 | # 27 | # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is 28 | # noncompliant, but you have some other compliant shell such as ksh or 29 | # bash, then to run this script, type that shell name before the whole 30 | # command line, like: 31 | # 32 | # ksh Gradle 33 | # 34 | # Busybox and similar reduced shells will NOT work, because this script 35 | # requires all of these POSIX shell features: 36 | # * functions; 37 | # * expansions «$var», «${var}», «${var:-default}», «${var+SET}», 38 | # «${var#prefix}», «${var%suffix}», and «$( cmd )»; 39 | # * compound commands having a testable exit status, especially «case»; 40 | # * various built-in commands including «command», «set», and «ulimit». 41 | # 42 | # Important for patching: 43 | # 44 | # (2) This script targets any POSIX shell, so it avoids extensions provided 45 | # by Bash, Ksh, etc; in particular arrays are avoided. 46 | # 47 | # The "traditional" practice of packing multiple parameters into a 48 | # space-separated string is a well documented source of bugs and security 49 | # problems, so this is (mostly) avoided, by progressively accumulating 50 | # options in "$@", and eventually passing that to Java. 51 | # 52 | # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, 53 | # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; 54 | # see the in-line comments for details. 55 | # 56 | # There are tweaks for specific operating systems such as AIX, CygWin, 57 | # Darwin, MinGW, and NonStop. 58 | # 59 | # (3) This script is generated from the Groovy template 60 | # https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt 61 | # within the Gradle project. 62 | # 63 | # You can find Gradle at https://github.com/gradle/gradle/. 64 | # 65 | ############################################################################## 66 | 67 | # Attempt to set APP_HOME 68 | 69 | # Resolve links: $0 may be a link 70 | app_path=$0 71 | 72 | # Need this for daisy-chained symlinks. 73 | while 74 | APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path 75 | [ -h "$app_path" ] 76 | do 77 | ls=$( ls -ld "$app_path" ) 78 | link=${ls#*' -> '} 79 | case $link in #( 80 | /*) app_path=$link ;; #( 81 | *) app_path=$APP_HOME$link ;; 82 | esac 83 | done 84 | 85 | # This is normally unused 86 | # shellcheck disable=SC2034 87 | APP_BASE_NAME=${0##*/} 88 | # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) 89 | APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s 90 | ' "$PWD" ) || exit 91 | 92 | # Use the maximum available, or set MAX_FD != -1 to use that value. 93 | MAX_FD=maximum 94 | 95 | warn () { 96 | echo "$*" 97 | } >&2 98 | 99 | die () { 100 | echo 101 | echo "$*" 102 | echo 103 | exit 1 104 | } >&2 105 | 106 | # OS specific support (must be 'true' or 'false'). 107 | cygwin=false 108 | msys=false 109 | darwin=false 110 | nonstop=false 111 | case "$( uname )" in #( 112 | CYGWIN* ) cygwin=true ;; #( 113 | Darwin* ) darwin=true ;; #( 114 | MSYS* | MINGW* ) msys=true ;; #( 115 | NONSTOP* ) nonstop=true ;; 116 | esac 117 | 118 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 119 | 120 | 121 | # Determine the Java command to use to start the JVM. 122 | if [ -n "$JAVA_HOME" ] ; then 123 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 124 | # IBM's JDK on AIX uses strange locations for the executables 125 | JAVACMD=$JAVA_HOME/jre/sh/java 126 | else 127 | JAVACMD=$JAVA_HOME/bin/java 128 | fi 129 | if [ ! -x "$JAVACMD" ] ; then 130 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 131 | 132 | Please set the JAVA_HOME variable in your environment to match the 133 | location of your Java installation." 134 | fi 135 | else 136 | JAVACMD=java 137 | if ! command -v java >/dev/null 2>&1 138 | then 139 | die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 140 | 141 | Please set the JAVA_HOME variable in your environment to match the 142 | location of your Java installation." 143 | fi 144 | fi 145 | 146 | # Increase the maximum file descriptors if we can. 147 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 148 | case $MAX_FD in #( 149 | max*) 150 | # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. 151 | # shellcheck disable=SC2039,SC3045 152 | MAX_FD=$( ulimit -H -n ) || 153 | warn "Could not query maximum file descriptor limit" 154 | esac 155 | case $MAX_FD in #( 156 | '' | soft) :;; #( 157 | *) 158 | # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. 159 | # shellcheck disable=SC2039,SC3045 160 | ulimit -n "$MAX_FD" || 161 | warn "Could not set maximum file descriptor limit to $MAX_FD" 162 | esac 163 | fi 164 | 165 | # Collect all arguments for the java command, stacking in reverse order: 166 | # * args from the command line 167 | # * the main class name 168 | # * -classpath 169 | # * -D...appname settings 170 | # * --module-path (only if needed) 171 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 172 | 173 | # For Cygwin or MSYS, switch paths to Windows format before running java 174 | if "$cygwin" || "$msys" ; then 175 | APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 176 | CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 177 | 178 | JAVACMD=$( cygpath --unix "$JAVACMD" ) 179 | 180 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 181 | for arg do 182 | if 183 | case $arg in #( 184 | -*) false ;; # don't mess with options #( 185 | /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 186 | [ -e "$t" ] ;; #( 187 | *) false ;; 188 | esac 189 | then 190 | arg=$( cygpath --path --ignore --mixed "$arg" ) 191 | fi 192 | # Roll the args list around exactly as many times as the number of 193 | # args, so each arg winds up back in the position where it started, but 194 | # possibly modified. 195 | # 196 | # NB: a `for` loop captures its iteration list before it begins, so 197 | # changing the positional parameters here affects neither the number of 198 | # iterations, nor the values presented in `arg`. 199 | shift # remove old arg 200 | set -- "$@" "$arg" # push replacement arg 201 | done 202 | fi 203 | 204 | 205 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 206 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 207 | 208 | # Collect all arguments for the java command: 209 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, 210 | # and any embedded shellness will be escaped. 211 | # * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be 212 | # treated as '${Hostname}' itself on the command line. 213 | 214 | set -- \ 215 | "-Dorg.gradle.appname=$APP_BASE_NAME" \ 216 | -classpath "$CLASSPATH" \ 217 | org.gradle.wrapper.GradleWrapperMain \ 218 | "$@" 219 | 220 | # Stop when "xargs" is not available. 221 | if ! command -v xargs >/dev/null 2>&1 222 | then 223 | die "xargs is not available" 224 | fi 225 | 226 | # Use "xargs" to parse quoted args. 227 | # 228 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed. 229 | # 230 | # In Bash we could simply go: 231 | # 232 | # readarray ARGS < <( xargs -n1 <<<"$var" ) && 233 | # set -- "${ARGS[@]}" "$@" 234 | # 235 | # but POSIX shell has neither arrays nor command substitution, so instead we 236 | # post-process each arg (as a line of input to sed) to backslash-escape any 237 | # character that might be a shell metacharacter, then use eval to reverse 238 | # that process (while maintaining the separation between arguments), and wrap 239 | # the whole thing up as a single "set" statement. 240 | # 241 | # This will of course break if any of these variables contains a newline or 242 | # an unmatched quote. 243 | # 244 | 245 | eval "set -- $( 246 | printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 247 | xargs -n1 | 248 | sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 249 | tr '\n' ' ' 250 | )" '"$@"' 251 | 252 | exec "$JAVACMD" "$@" 253 | -------------------------------------------------------------------------------- /largescale/gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | @rem SPDX-License-Identifier: Apache-2.0 17 | @rem 18 | 19 | @if "%DEBUG%"=="" @echo off 20 | @rem ########################################################################## 21 | @rem 22 | @rem Gradle startup script for Windows 23 | @rem 24 | @rem ########################################################################## 25 | 26 | @rem Set local scope for the variables with windows NT shell 27 | if "%OS%"=="Windows_NT" setlocal 28 | 29 | set DIRNAME=%~dp0 30 | if "%DIRNAME%"=="" set DIRNAME=. 31 | @rem This is normally unused 32 | set APP_BASE_NAME=%~n0 33 | set APP_HOME=%DIRNAME% 34 | 35 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 36 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 37 | 38 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 39 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 40 | 41 | @rem Find java.exe 42 | if defined JAVA_HOME goto findJavaFromJavaHome 43 | 44 | set JAVA_EXE=java.exe 45 | %JAVA_EXE% -version >NUL 2>&1 46 | if %ERRORLEVEL% equ 0 goto execute 47 | 48 | echo. 1>&2 49 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 50 | echo. 1>&2 51 | echo Please set the JAVA_HOME variable in your environment to match the 1>&2 52 | echo location of your Java installation. 1>&2 53 | 54 | goto fail 55 | 56 | :findJavaFromJavaHome 57 | set JAVA_HOME=%JAVA_HOME:"=% 58 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 59 | 60 | if exist "%JAVA_EXE%" goto execute 61 | 62 | echo. 1>&2 63 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 64 | echo. 1>&2 65 | echo Please set the JAVA_HOME variable in your environment to match the 1>&2 66 | echo location of your Java installation. 1>&2 67 | 68 | goto fail 69 | 70 | :execute 71 | @rem Setup the command line 72 | 73 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 74 | 75 | 76 | @rem Execute Gradle 77 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 78 | 79 | :end 80 | @rem End local scope for the variables with windows NT shell 81 | if %ERRORLEVEL% equ 0 goto mainEnd 82 | 83 | :fail 84 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 85 | rem the _cmd.exe /c_ return code! 86 | set EXIT_CODE=%ERRORLEVEL% 87 | if %EXIT_CODE% equ 0 set EXIT_CODE=1 88 | if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% 89 | exit /b %EXIT_CODE% 90 | 91 | :mainEnd 92 | if "%OS%"=="Windows_NT" endlocal 93 | 94 | :omega 95 | -------------------------------------------------------------------------------- /largescale/settings.gradle.kts: -------------------------------------------------------------------------------- 1 | rootProject.name = "largescale" 2 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/LargescaleApplication.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale; 2 | 3 | import org.springframework.boot.SpringApplication; 4 | import org.springframework.boot.autoconfigure.SpringBootApplication; 5 | 6 | @SpringBootApplication 7 | public class LargescaleApplication { 8 | 9 | public static void main(String[] args) { 10 | SpringApplication.run(LargescaleApplication.class, args); 11 | } 12 | 13 | } 14 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/controller/LargeScaleController.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.controller; 2 | 3 | import com.vsfe.largescale.service.LargeScaleService; 4 | import lombok.RequiredArgsConstructor; 5 | import org.springframework.web.bind.annotation.RequestMapping; 6 | import org.springframework.web.bind.annotation.RestController; 7 | 8 | /** 9 | * 예시 중심의 세미나이므로, 10 | * 실제 서비스와는 달리 사용하는 API만 Controller 형태로 구성했습니다. 11 | */ 12 | @RestController 13 | @RequestMapping("/service") 14 | @RequiredArgsConstructor 15 | public class LargeScaleController { 16 | private final LargeScaleService largeScaleService; 17 | 18 | /** 19 | * Step 1. 기본적인 쿼리의 최적화를 수행해 봅시다. 20 | */ 21 | public void getUserInfo() { 22 | 23 | } 24 | 25 | /** 26 | * Step 2. 페이징을 활용한 쿼리 최적화 방식에 대해 고민해 봅시다. 27 | */ 28 | public void getTransactions() { 29 | 30 | } 31 | 32 | /** 33 | * Step 3. Full Scan 을 수행해야 하는 로직은 어떻게 수행해야 할까요? 34 | */ 35 | public void validateAccountNumber() { 36 | 37 | } 38 | 39 | /** 40 | * Step 4. 통계성 집계를 병렬로 수행해 봅시다. 41 | */ 42 | public void aggregateTransactions() { 43 | 44 | } 45 | 46 | /** 47 | * Step 5. 데이터를 샤딩한다면 어떻게 될까요? 48 | */ 49 | public void aggregateTransactionsWithSharding() { 50 | 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/domain/Account.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.domain; 2 | 3 | import java.time.Instant; 4 | 5 | import org.hibernate.annotations.ColumnDefault; 6 | 7 | import jakarta.persistence.Column; 8 | import jakarta.persistence.Entity; 9 | import jakarta.persistence.GeneratedValue; 10 | import jakarta.persistence.GenerationType; 11 | import jakarta.persistence.Id; 12 | import jakarta.persistence.Table; 13 | import jakarta.validation.constraints.NotNull; 14 | import jakarta.validation.constraints.Size; 15 | import lombok.Getter; 16 | import lombok.Setter; 17 | 18 | @Getter 19 | @Setter 20 | @Entity 21 | @Table(name = "account") 22 | public class Account { 23 | @Id 24 | @GeneratedValue(strategy = GenerationType.IDENTITY) 25 | @Column(name = "account_id", nullable = false) 26 | private Integer id; 27 | 28 | @Size(max = 13) 29 | @NotNull 30 | @Column(name = "account_number", nullable = false, length = 13) 31 | private String accountNumber; 32 | 33 | @NotNull 34 | @Column(name = "user_id", nullable = false) 35 | private Integer userId; 36 | 37 | @NotNull 38 | @Column(name = "account_type", nullable = false) 39 | private Character accountType; 40 | 41 | @Size(max = 200) 42 | @Column(name = "memo", length = 200) 43 | private String memo; 44 | 45 | @NotNull 46 | @ColumnDefault("0") 47 | @Column(name = "balance", nullable = false) 48 | private Long balance; 49 | 50 | @NotNull 51 | @ColumnDefault("CURRENT_TIMESTAMP") 52 | @Column(name = "create_date", nullable = false) 53 | private Instant createDate; 54 | 55 | @Column(name = "recent_transaction_date") 56 | private Instant recentTransactionDate; 57 | 58 | } -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/domain/Transaction.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.domain; 2 | 3 | import java.time.Instant; 4 | 5 | import org.hibernate.annotations.ColumnDefault; 6 | 7 | import jakarta.persistence.Column; 8 | import jakarta.persistence.Entity; 9 | import jakarta.persistence.GeneratedValue; 10 | import jakarta.persistence.GenerationType; 11 | import jakarta.persistence.Id; 12 | import jakarta.persistence.Table; 13 | import jakarta.validation.constraints.NotNull; 14 | import jakarta.validation.constraints.Size; 15 | import lombok.Getter; 16 | import lombok.Setter; 17 | 18 | @Getter 19 | @Setter 20 | @Entity 21 | @Table(name = "transaction") 22 | public class Transaction { 23 | @Id 24 | @GeneratedValue(strategy = GenerationType.IDENTITY) 25 | @Column(name = "transaction_id", nullable = false) 26 | private Integer id; 27 | 28 | @Size(max = 20) 29 | @NotNull 30 | @Column(name = "sender_account", nullable = false, length = 20) 31 | private String senderAccount; 32 | 33 | @Size(max = 20) 34 | @NotNull 35 | @Column(name = "receiver_account", nullable = false, length = 20) 36 | private String receiverAccount; 37 | 38 | @Size(max = 11) 39 | @NotNull 40 | @Column(name = "sender_swift_code", nullable = false, length = 11) 41 | private String senderSwiftCode; 42 | 43 | @Size(max = 11) 44 | @NotNull 45 | @Column(name = "receiver_swift_code", nullable = false, length = 11) 46 | private String receiverSwiftCode; 47 | 48 | @Size(max = 20) 49 | @NotNull 50 | @Column(name = "sender_name", nullable = false, length = 20) 51 | private String senderName; 52 | 53 | @Size(max = 20) 54 | @NotNull 55 | @Column(name = "receiver_name", nullable = false, length = 20) 56 | private String receiverName; 57 | 58 | @NotNull 59 | @Column(name = "amount", nullable = false) 60 | private Long amount; 61 | 62 | @Size(max = 200) 63 | @Column(name = "memo", length = 200) 64 | private String memo; 65 | 66 | @NotNull 67 | @ColumnDefault("CURRENT_TIMESTAMP") 68 | @Column(name = "transaction_date", nullable = false) 69 | private Instant transactionDate; 70 | 71 | } -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/domain/User.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.domain; 2 | 3 | import java.time.Instant; 4 | 5 | import jakarta.persistence.Column; 6 | import jakarta.persistence.Entity; 7 | import jakarta.persistence.Id; 8 | import jakarta.persistence.Table; 9 | import jakarta.validation.constraints.NotNull; 10 | import jakarta.validation.constraints.Size; 11 | import lombok.Getter; 12 | import lombok.Setter; 13 | 14 | @Getter 15 | @Setter 16 | @Entity 17 | @Table(name = "user") 18 | public class User { 19 | @Id 20 | @Column(name = "user_id", nullable = false) 21 | private Integer id; 22 | 23 | @Size(max = 30) 24 | @NotNull 25 | @Column(name = "username", nullable = false, length = 30) 26 | private String username; 27 | 28 | @Size(max = 30) 29 | @NotNull 30 | @Column(name = "email", nullable = false, length = 30) 31 | private String email; 32 | 33 | @Size(max = 10) 34 | @NotNull 35 | @Column(name = "nickname", nullable = false, length = 10) 36 | private String nickname; 37 | 38 | @NotNull 39 | @Column(name = "group_id", nullable = false) 40 | private Integer groupId; 41 | 42 | @NotNull 43 | @Column(name = "user_status", nullable = false) 44 | private Character userStatus; 45 | 46 | @NotNull 47 | @Column(name = "create_date", nullable = false) 48 | private Instant createDate; 49 | 50 | @NotNull 51 | @Column(name = "update_date", nullable = false) 52 | private Instant updateDate; 53 | 54 | } -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/repository/AccountRepository.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.repository; 2 | 3 | import com.vsfe.largescale.domain.Account; 4 | import org.springframework.data.jpa.repository.JpaRepository; 5 | import org.springframework.stereotype.Repository; 6 | 7 | @Repository 8 | public interface AccountRepository extends JpaRepository { 9 | } 10 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/repository/TransactionRepository.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.repository; 2 | 3 | import com.vsfe.largescale.domain.Transaction; 4 | import org.springframework.data.jpa.repository.JpaRepository; 5 | import org.springframework.stereotype.Repository; 6 | 7 | @Repository 8 | public interface TransactionRepository extends JpaRepository { 9 | } 10 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/repository/UserRepository.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.repository; 2 | 3 | import com.vsfe.largescale.domain.User; 4 | import org.springframework.data.jpa.repository.JpaRepository; 5 | import org.springframework.stereotype.Repository; 6 | 7 | @Repository 8 | public interface UserRepository extends JpaRepository { 9 | 10 | } 11 | -------------------------------------------------------------------------------- /largescale/src/main/java/com/vsfe/largescale/service/LargeScaleService.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale.service; 2 | 3 | import com.vsfe.largescale.repository.AccountRepository; 4 | import com.vsfe.largescale.repository.TransactionRepository; 5 | import com.vsfe.largescale.repository.UserRepository; 6 | import lombok.RequiredArgsConstructor; 7 | import org.springframework.stereotype.Service; 8 | 9 | @Service 10 | @RequiredArgsConstructor 11 | public class LargeScaleService { 12 | private final AccountRepository accountRepository; 13 | private final TransactionRepository transactionRepository; 14 | private final UserRepository userRepository; 15 | 16 | public void getUserInfo() { 17 | 18 | } 19 | 20 | public void getTransactions() { 21 | 22 | } 23 | 24 | public void validateAccountNumber() { 25 | 26 | } 27 | 28 | public void aggregateTransactions() { 29 | 30 | } 31 | 32 | public void aggregateTransactionsWithSharding() { 33 | 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /largescale/src/main/resources/application.yaml: -------------------------------------------------------------------------------- 1 | spring: 2 | datasource: 3 | driver-class-name: com.mysql.cj.jdbc.Driver 4 | username: # 추후 공지 5 | password: # 추후 공지 6 | url: # 추후 공지 7 | jpa: 8 | show-sql: true 9 | hibernate: 10 | ddl-auto: validate 11 | properties: 12 | hibernate: 13 | format_sql: true 14 | use_sql_comments: true -------------------------------------------------------------------------------- /largescale/src/test/java/com/vsfe/largescale/LargescaleApplicationTests.java: -------------------------------------------------------------------------------- 1 | package com.vsfe.largescale; 2 | 3 | import org.junit.jupiter.api.Test; 4 | import org.springframework.boot.test.context.SpringBootTest; 5 | 6 | @SpringBootTest 7 | class LargescaleApplicationTests { 8 | 9 | @Test 10 | void contextLoads() { 11 | } 12 | 13 | } 14 | --------------------------------------------------------------------------------