مفاتيح التخزين المؤقت واتساقه

package training.catalog;

import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Service;

@Configuration(proxyBeanMethods = false)
@EnableCaching
class ProductCacheConfiguration {}

@Service
class ProductCacheService {
    private final ProductQuery products;
    ProductCacheService(ProductQuery products) { this.products = products; }
    @Cacheable(cacheNames="productSummaries", key="{#p0,#p1,#p2}")
    public ProductSummary load(String tenantId, long productId, String language) {
        return products.read(tenantId, productId, language);
    }
}

يشمل المفتاح الأبعاد الثلاثة، ولم ينفذ الموفر أوالاعتراض أوالتفويض أوالإبطال.

public class Main {
record Key(String tenant,long product,String language) {}
 public static void main(String[] args) throws Exception {
var cache=java.util.Map.of(new Key("north",42,"en"),"North view");
System.out.println(cache.containsKey(new Key("north",42,"en")));
System.out.println(cache.containsKey(new Key("south",42,"en")));
System.out.println(cache.containsKey(new Key("north",42,"ar")));
 }
}

true
false
false

يطابق المفتاح الكامل نفسه فقط دون موفر أو TTL أووكيل أوآلية تفويض.