diff --git a/build.gradle.kts b/build.gradle.kts
index 90f0258..d7b6f12 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -44,7 +44,6 @@ dependencies {
     implementation(libs.spring.boot.starter.validation)
     implementation(libs.spring.boot.starter.redis)
     implementation(libs.spring.boot.starter.cache)
-    implementation(libs.spring.boot.starter.security)
     implementation(libs.spring.boot.starter.jpa)
     implementation(libs.mybatis.starter.core)
     implementation(libs.flyway.core)
@@ -52,9 +51,7 @@ dependencies {
     implementation(libs.jackson.jsr310)
     testImplementation(libs.spring.boot.starter.test)
     testImplementation(libs.reactor.test)
-    testImplementation(libs.spring.security.test)
     testImplementation(libs.mybatis.starter.test)
-    // runtimeOnly(libs.postgres.driver)
     runtimeOnly(libs.mysql.driver)
     testRuntimeOnly(libs.h2.database)
     testRuntimeOnly(libs.junit.launcher)
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
new file mode 100644
index 0000000..0502c4a
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
@@ -0,0 +1,102 @@
+package com.onixbyte.deltaforceguide.config;
+
+import com.onixbyte.deltaforceguide.shared.JacksonRedisSerialiser;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+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.RedisSerializationContext;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+import java.time.Duration;
+
+/**
+ * Configuration class for Redis-based caching components.
+ * <p>
+ * This configuration class provides beans for Redis cache management and template operations
+ * within the Helix application. It configures custom serialisation strategies using
+ * {@link GenericJackson2JsonRedisSerializer} for values and string serialisation for keys,
+ * ensuring optimal performance and compatibility with JSON-based data structures.
+ * <p>
+ * The configuration includes:
+ * <ul>
+ *   <li>Custom {@link RedisCacheManager} with JSON serialisation support</li>
+ *   <li>Configured {@link RedisTemplate} for direct Redis operations</li>
+ * </ul>
+ *
+ * @author zihluwang
+ * @see RedisCacheManager
+ * @see RedisTemplate
+ * @see GenericJackson2JsonRedisSerializer
+ * @since 1.0.0
+ */
+@Configuration
+@EnableCaching
+public class CacheConfig {
+
+    /**
+     * Creates a custom Redis cache manager with JSON serialisation support.
+     * <p>
+     * This method configures a {@link RedisCacheManager} that uses string serialisation for cache
+     * keys and {@link GenericJackson2JsonRedisSerializer} for cache values. This setup ensures that
+     * complex objects can be stored and retrieved from Redis cache whilst maintaining readability
+     * and compatibility with JSON-based systems.
+     *
+     * @param connectionFactory the Redis connection factory used to establish connections
+     * @return a configured {@link RedisCacheManager} with custom serialisation settings
+     * @see RedisCacheManager
+     * @see GenericJackson2JsonRedisSerializer
+     * @see RedisSerializationContext
+     */
+    @Bean
+    public RedisCacheManager cacheManager(
+            RedisConnectionFactory connectionFactory
+    ) {
+        var _keySerializer = RedisSerializer.string();
+
+        var cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(RedisSerializationContext.SerializationPair
+                        .fromSerializer(_keySerializer))
+                .serializeValuesWith(RedisSerializationContext.SerializationPair
+                        .fromSerializer(JacksonRedisSerialiser.INSTANCE))
+                .entryTtl(Duration.ofMinutes(90L));
+
+        return RedisCacheManager.RedisCacheManagerBuilder
+                .fromConnectionFactory(connectionFactory)
+                .cacheDefaults(cacheConfiguration)
+                .build();
+    }
+
+    /**
+     * Creates a Redis template for direct Redis operations with custom serialisation.
+     * <p>
+     * This method configures a {@link RedisTemplate} that uses string serialisation for keys
+     * and {@link GenericJackson2JsonRedisSerializer} for values. This template provides low-level
+     * access to Redis operations whilst ensuring consistent serialisation strategies across
+     * the application.
+     * <p>
+     * The template is fully configured and ready for use after bean creation.
+     *
+     * @param connectionFactory the Redis connection factory used to establish connections
+     * @return a fully configured {@link RedisTemplate} for Redis operations
+     * @see RedisTemplate
+     * @see GenericJackson2JsonRedisSerializer
+     * @see RedisSerializer
+     */
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(
+            RedisConnectionFactory connectionFactory
+    ) {
+        var redisTemplate = new RedisTemplate<String, Object>();
+        redisTemplate.setConnectionFactory(connectionFactory);
+        redisTemplate.setKeySerializer(RedisSerializer.string());
+        redisTemplate.setValueSerializer(JacksonRedisSerialiser.INSTANCE);
+        redisTemplate.afterPropertiesSet();
+        return redisTemplate;
+    }
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
new file mode 100644
index 0000000..565bf69
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
@@ -0,0 +1,43 @@
+package com.onixbyte.deltaforceguide.config;
+
+import com.onixbyte.deltaforceguide.properties.CorsProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+@Configuration
+@EnableConfigurationProperties({CorsProperties.class})
+public class CorsConfig implements WebMvcConfigurer {
+
+    private final CorsProperties properties;
+
+    public CorsConfig(CorsProperties properties) {
+        this.properties = properties;
+    }
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedOrigins(properties.allowedOrigins())
+                .allowedHeaders(properties.allowedHeaders())
+                .allowedMethods(toHttpMethodNames(properties.allowedMethods()))
+                .allowCredentials(properties.allowCredentials())
+                .maxAge(properties.maxAge().toSeconds())
+                .exposedHeaders(properties.exposedHeaders());
+    }
+
+    private static String[] toHttpMethodNames(HttpMethod[] methods) {
+        return Optional.ofNullable(methods)
+                .stream()
+                .flatMap(Stream::of)
+                .map(HttpMethod::name)
+                .toList()
+                .toArray(String[]::new);
+    }
+
+}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
new file mode 100644
index 0000000..a64a1ea
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
@@ -0,0 +1,20 @@
+package com.onixbyte.deltaforceguide.config;
+
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.onixbyte.deltaforceguide.shared.JacksonModules;
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class JacksonConfig {
+
+    @Bean
+    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomiser() {
+        return (builder) -> {
+            builder.modules(JacksonModules.DATE_TIME_MODULE);
+            builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        };
+    }
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
new file mode 100644
index 0000000..61acbfc
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
@@ -0,0 +1,10 @@
+package com.onixbyte.deltaforceguide.config;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@MapperScan(basePackages = {"com.onixbyte.deltaforceguide.mapper"})
+public class MyBatisConfig {
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
new file mode 100644
index 0000000..44e3a4c
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
@@ -0,0 +1,10 @@
+package com.onixbyte.deltaforceguide.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@Configuration
+@EnableJpaRepositories(basePackages = {"com.onixbyte.deltaforceguide.repository"})
+public class SpringDataConfig {
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
new file mode 100644
index 0000000..ff064d5
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
@@ -0,0 +1,24 @@
+package com.onixbyte.deltaforceguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.bind.DefaultValue;
+import org.springframework.http.HttpMethod;
+
+import java.time.Duration;
+
+@ConfigurationProperties(prefix = "app.cors")
+public record CorsProperties(
+        @DefaultValue({"Content-Type", "Authorization"})
+        String[] allowedHeaders,
+        @DefaultValue({"GET", "POST", "PUT", "PATCH", "DELETE"})
+        HttpMethod[] allowedMethods,
+        String[] allowedOrigins,
+        boolean allowCredentials,
+        boolean allowPrivateNetwork,
+        @DefaultValue("PT2H")
+        Duration maxAge,
+        @DefaultValue({"Content-Type", "Authorization"})
+        String[] exposedHeaders
+) {
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java b/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
new file mode 100644
index 0000000..134408b
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
@@ -0,0 +1,46 @@
+package com.onixbyte.deltaforceguide.shared;
+
+import java.time.format.DateTimeFormatter;
+
+/**
+ * Utility class providing predefined {@link DateTimeFormatter} instances for common date and
+ * time patterns. These formatters can be used to parse and format {@code java.time} objects
+ * consistently throughout an application.
+ *
+ * @author zihluwang
+ */
+public class DateTimeFormatters {
+
+    /**
+     * A {@link DateTimeFormatter} for formatting and parsing full date and time with seconds, using
+     * the pattern "yyyy-MM-dd HH:mm:ss".
+     * <p>
+     * Example: "{@code 2023-10-27 15:30:45}"
+     */
+    public static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+    /**
+     * A {@link DateTimeFormatter} for formatting and parsing dates only, using the
+     * pattern "yyyy-MM-dd".
+     * <p>
+     * Example: "{@code 2023-10-27}"
+     */
+    public static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+    /**
+     * A {@link DateTimeFormatter} for formatting and parsing times only, using the
+     * pattern "HH:mm:ss".
+     * <p>
+     * Example: "{@code 15:30:45}"
+     */
+    public static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
+
+    /**
+     * A {@link DateTimeFormatter} for formatting and parsing year and month only, using the
+     * pattern "yyyy-MM".
+     * <p>
+     * Example: "{@code 2023-10}"
+     */
+    public static final DateTimeFormatter YEAR_MONTH_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM");
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
new file mode 100644
index 0000000..36332aa
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
@@ -0,0 +1,34 @@
+package com.onixbyte.deltaforceguide.shared;
+
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+
+public class JacksonModules {
+
+    public static final SimpleModule DATE_TIME_MODULE = initialiseDateTimeModule();
+
+    private static SimpleModule initialiseDateTimeModule() {
+        var javaTimeModule = new JavaTimeModule();
+        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatters.DATE_TIME_FORMATTER));
+        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatters.DATE_TIME_FORMATTER));
+
+        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatters.DATE_FORMATTER));
+        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatters.DATE_FORMATTER));
+
+        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatters.TIME_FORMATTER));
+        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatters.TIME_FORMATTER));
+
+        return javaTimeModule;
+    }
+}
+
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
new file mode 100644
index 0000000..5a300ba
--- /dev/null
+++ b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
@@ -0,0 +1,22 @@
+package com.onixbyte.deltaforceguide.shared;
+
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+
+public class JacksonRedisSerialiser {
+
+    public static final GenericJackson2JsonRedisSerializer INSTANCE = initialiseSerializer();
+
+    private static GenericJackson2JsonRedisSerializer initialiseSerializer() {
+        var serializer = new GenericJackson2JsonRedisSerializer();
+
+        serializer.configure((configurer) -> {
+            configurer.registerModule(new JavaTimeModule());
+            configurer.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        });
+
+        return serializer;
+    }
+}
+