dev/codeforces/ Добавил кэширование для запроса получения рейтинга пользователя

Author: AlexanderGarifullin

build.gradle

@@ -44,6 +44,9 @@ dependencies {
 	implementation 'io.jsonwebtoken:jjwt-impl:0.12.6'
 	implementation 'io.jsonwebtoken:jjwt-jackson:0.12.6'
 
+	// cache
+	implementation 'com.github.ben-manes.caffeine:caffeine:3.1.8'
+
 	// test
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testImplementation 'org.testcontainers:junit-jupiter:1.20.1'

src/main/java/com/cf/cfteam/config/AppConfig.java

@@ -1,6 +1,7 @@
 package com.cf.cfteam.config;
 
 import com.cf.cfteam.services.security.MyUserDetailsService;
+import com.cf.cfteam.utils.codeforces.mappers.GroupMapper;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;

src/main/java/com/cf/cfteam/config/CacheConfig.java

@@ -0,0 +1,27 @@
+package com.cf.cfteam.config;
+
+import com.cf.cfteam.services.client.CodeforcesClient;
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.CacheLoader;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.LoadingCache;
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.concurrent.TimeUnit;
+
+@Configuration
+@RequiredArgsConstructor
+public class CacheConfig {
+
+    private final CodeforcesClient codeforcesClient;
+
+    @Bean
+    public LoadingCache<String, Double> ratingCache() {
+        return Caffeine.newBuilder()
+                .expireAfterWrite(1, TimeUnit.HOURS)
+                .maximumSize(1000)
+                .build(codeforcesClient::fetchRatingFromApi);
+    }
+}