@

Initial commit: SB 백엔드 (Spring Boot + MyBatis)

- 사용자 CRUD REST API (/api/users)
- MariaDB(MyBatis) + Redis 캐싱 구성
- CORS 설정 및 헬스 체크 엔드포인트

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@

.gitattributes

@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary

.gitignore

@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

build.gradle

@@ -0,0 +1,38 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.5.14'
+	id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(17)
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:3.0.5'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'org.mariadb.jdbc:mariadb-java-client'
+	annotationProcessor 'org.projectlombok:lombok'
+	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter-test:3.0.5'
+	testCompileOnly 'org.projectlombok:lombok'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+	testAnnotationProcessor 'org.projectlombok:lombok'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'sb_bt'

src/main/java/com/example/sb_bt/SbBtApplication.java

@@ -0,0 +1,15 @@
+package com.example.sb_bt;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+@MapperScan("com.example.sb_bt.mapper")
+public class SbBtApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SbBtApplication.class, args);
+	}
+
+}

src/main/java/com/example/sb_bt/config/CorsConfig.java

@@ -0,0 +1,23 @@
+package com.example.sb_bt.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * Vue 개발 서버(기본 5173)에서의 호출을 허용하기 위한 CORS 설정.
+ * 운영 환경에서는 allowedOrigins 를 실제 도메인으로 제한하세요.
+ */
+@Configuration
+public class CorsConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/api/**")
+                .allowedOrigins("http://localhost:5173")
+                .allowedMethods("GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS")
+                .allowedHeaders("*")
+                .allowCredentials(true)
+                .maxAge(3600);
+    }
+}

src/main/java/com/example/sb_bt/config/RedisConfig.java

@@ -0,0 +1,35 @@
+package com.example.sb_bt.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+/**
+ * RedisTemplate 구성.
+ * - Key   : String 직렬화
+ * - Value : JSON 직렬화 (객체 저장 가능)
+ */
+@Configuration
+public class RedisConfig {
+
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(connectionFactory);
+
+        StringRedisSerializer stringSerializer = new StringRedisSerializer();
+        GenericJackson2JsonRedisSerializer jsonSerializer =
+                new GenericJackson2JsonRedisSerializer(new ObjectMapper());
+
+        template.setKeySerializer(stringSerializer);
+        template.setHashKeySerializer(stringSerializer);
+        template.setValueSerializer(jsonSerializer);
+        template.setHashValueSerializer(jsonSerializer);
+        template.afterPropertiesSet();
+        return template;
+    }
+}

src/main/java/com/example/sb_bt/controller/HealthController.java

@@ -0,0 +1,20 @@
+package com.example.sb_bt.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api")
+public class HealthController {
+
+    @GetMapping("/health")
+    public Map<String, Object> health() {
+        return Map.of(
+                "status", "UP",
+                "service", "sb_bt"
+        );
+    }
+}

src/main/java/com/example/sb_bt/controller/UserController.java

@@ -0,0 +1,46 @@
+package com.example.sb_bt.controller;
+
+import com.example.sb_bt.domain.User;
+import com.example.sb_bt.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.net.URI;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/users")
+@RequiredArgsConstructor
+public class UserController {
+
+    private final UserService userService;
+
+    @GetMapping
+    public List<User> list() {
+        return userService.findAll();
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<User> get(@PathVariable Long id) {
+        User user = userService.findById(id);
+        return user == null ? ResponseEntity.notFound().build() : ResponseEntity.ok(user);
+    }
+
+    @PostMapping
+    public ResponseEntity<User> create(@RequestBody User user) {
+        User created = userService.create(user);
+        return ResponseEntity.created(URI.create("/api/users/" + created.getId())).body(created);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<User> update(@PathVariable Long id, @RequestBody User user) {
+        return ResponseEntity.ok(userService.update(id, user));
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable Long id) {
+        userService.delete(id);
+        return ResponseEntity.noContent().build();
+    }
+}

src/main/java/com/example/sb_bt/domain/User.java

@@ -0,0 +1,25 @@
+package com.example.sb_bt.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * 샘플 도메인. users 테이블과 매핑.
+ * Redis 캐싱(JSON 직렬화)을 위해 Serializable 구현.
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class User implements Serializable {
+
+    private Long id;
+    private String name;
+    private String email;
+    private LocalDateTime createdAt;
+}

src/main/java/com/example/sb_bt/mapper/UserMapper.java

@@ -0,0 +1,24 @@
+package com.example.sb_bt.mapper;
+
+import com.example.sb_bt.domain.User;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
+
+/**
+ * MyBatis 매퍼. SQL 은 resources/mapper/UserMapper.xml 에 정의.
+ */
+@Mapper
+public interface UserMapper {
+
+    List<User> findAll();
+
+    User findById(@Param("id") Long id);
+
+    int insert(User user);
+
+    int update(User user);
+
+    int delete(@Param("id") Long id);
+}

src/main/java/com/example/sb_bt/service/UserService.java

@@ -0,0 +1,68 @@
+package com.example.sb_bt.service;
+
+import com.example.sb_bt.domain.User;
+import com.example.sb_bt.mapper.UserMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Duration;
+import java.util.List;
+
+/**
+ * 샘플 서비스. 단건 조회 시 Redis 캐시를 사용하는 예시 포함.
+ */
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class UserService {
+
+    private final UserMapper userMapper;
+    private final RedisTemplate<String, Object> redisTemplate;
+
+    private static final String CACHE_KEY_PREFIX = "user:";
+    private static final Duration CACHE_TTL = Duration.ofMinutes(10);
+
+    public List<User> findAll() {
+        return userMapper.findAll();
+    }
+
+    public User findById(Long id) {
+        String key = CACHE_KEY_PREFIX + id;
+
+        Object cached = redisTemplate.opsForValue().get(key);
+        if (cached instanceof User user) {
+            log.debug("[cache hit] {}", key);
+            return user;
+        }
+
+        User user = userMapper.findById(id);
+        if (user != null) {
+            redisTemplate.opsForValue().set(key, user, CACHE_TTL);
+            log.debug("[cache put] {}", key);
+        }
+        return user;
+    }
+
+    @Transactional
+    public User create(User user) {
+        userMapper.insert(user);
+        return user;
+    }
+
+    @Transactional
+    public User update(Long id, User user) {
+        user.setId(id);
+        userMapper.update(user);
+        redisTemplate.delete(CACHE_KEY_PREFIX + id);
+        return userMapper.findById(id);
+    }
+
+    @Transactional
+    public void delete(Long id) {
+        userMapper.delete(id);
+        redisTemplate.delete(CACHE_KEY_PREFIX + id);
+    }
+}

src/main/resources/application.yml

@@ -0,0 +1,51 @@
+server:
+  port: 8080
+  servlet:
+    context-path: /
+
+spring:
+  application:
+    name: sb_bt
+
+  # ===== MariaDB =====
+  datasource:
+    driver-class-name: org.mariadb.jdbc.Driver
+    url: jdbc:mariadb://localhost:3306/sb_db?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Seoul
+    username: sb_user
+    password: sb_pass
+    hikari:
+      maximum-pool-size: 10
+      minimum-idle: 2
+      connection-timeout: 30000
+      pool-name: sbHikariPool
+
+  # ===== Redis =====
+  data:
+    redis:
+      host: localhost
+      port: 6379
+      password:
+      database: 0
+      timeout: 3000ms
+      lettuce:
+        pool:
+          max-active: 8
+          max-idle: 8
+          min-idle: 0
+
+# ===== MyBatis =====
+mybatis:
+  type-aliases-package: com.example.sb_bt.domain
+  mapper-locations: classpath:mapper/**/*.xml
+  configuration:
+    map-underscore-to-camel-case: true
+    jdbc-type-for-null: 'NULL'
+    default-fetch-size: 100
+    default-statement-timeout: 30
+
+# ===== Logging =====
+logging:
+  level:
+    root: INFO
+    com.example.sb_bt: DEBUG
+    com.example.sb_bt.mapper: DEBUG

src/main/resources/db/schema.sql

@@ -0,0 +1,34 @@
+-- ============================================================
+-- sb_bt 초기 스키마 / 시드 데이터 (MariaDB)
+-- 사용법:
+--   1) MariaDB 접속 후 아래 DB/계정 생성 (관리자 권한)
+--   2) sb_db 선택 후 users 테이블 생성 및 시드 입력
+-- ============================================================
+
+-- 데이터베이스 및 계정 (최초 1회, root 등 관리자로 실행)
+CREATE DATABASE IF NOT EXISTS sb_db
+    DEFAULT CHARACTER SET utf8mb4
+    DEFAULT COLLATE utf8mb4_unicode_ci;
+
+CREATE USER IF NOT EXISTS 'sb_user'@'%' IDENTIFIED BY 'sb_pass';
+GRANT ALL PRIVILEGES ON sb_db.* TO 'sb_user'@'%';
+FLUSH PRIVILEGES;
+
+USE sb_db;
+
+-- 샘플 테이블
+CREATE TABLE IF NOT EXISTS users (
+    id          BIGINT       NOT NULL AUTO_INCREMENT,
+    name        VARCHAR(100) NOT NULL,
+    email       VARCHAR(255) NOT NULL,
+    created_at  DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (id),
+    UNIQUE KEY uk_users_email (email)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- 시드 데이터
+INSERT INTO users (name, email) VALUES
+    ('홍길동', 'hong@example.com'),
+    ('김철수', 'kim@example.com'),
+    ('이영희', 'lee@example.com')
+ON DUPLICATE KEY UPDATE name = VALUES(name);

src/main/resources/mapper/UserMapper.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.example.sb_bt.mapper.UserMapper">
+
+    <resultMap id="userResultMap" type="User">
+        <id property="id" column="id"/>
+        <result property="name" column="name"/>
+        <result property="email" column="email"/>
+        <result property="createdAt" column="created_at"/>
+    </resultMap>
+
+    <select id="findAll" resultMap="userResultMap">
+        SELECT id, name, email, created_at
+        FROM users
+        ORDER BY id DESC
+    </select>
+
+    <select id="findById" parameterType="long" resultMap="userResultMap">
+        SELECT id, name, email, created_at
+        FROM users
+        WHERE id = #{id}
+    </select>
+
+    <insert id="insert" parameterType="User" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO users (name, email, created_at)
+        VALUES (#{name}, #{email}, NOW())
+    </insert>
+
+    <update id="update" parameterType="User">
+        UPDATE users
+        SET name = #{name},
+            email = #{email}
+        WHERE id = #{id}
+    </update>
+
+    <delete id="delete" parameterType="long">
+        DELETE FROM users
+        WHERE id = #{id}
+    </delete>
+
+</mapper>

src/test/java/com/example/sb_bt/SbBtApplicationTests.java

@@ -0,0 +1,13 @@
+package com.example.sb_bt;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SbBtApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}