<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
<version>2.9.0</version>
</dependency>
import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;
public class MyCache {
private static Cache<String, Data> cache;
public static void initializeCache() {
cache = Caffeine.newBuilder()
.maximumSize(1000)
.build();
}
}
import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;
public class MyClass {
private static Cache<String, Data> cache;
public static void main(String[] args) {
initializeCache();
String key = "myKey";
Data data = getData(key);
System.out.println(data);
}
public static void initializeCache() {
cache = Caffeine.newBuilder()
.maximumSize(1000)
.build();
}
public static Data getData(String key) {
Data data = cache.getIfPresent(key);
if (data == null) {
data = fetchDataFromDataSource(key);
cache.put(key, data);
}
return data;
}
public static Data fetchDataFromDataSource(String key) {
}
}
Cache<String, Data> cache = Caffeine.newBuilder()
.maximumSize(1000)
.expireAfterWrite(10, TimeUnit.MINUTES)
.refreshAfterWrite(5, TimeUnit.MINUTES)
.build();
