FANNG1 commented on code in PR #8980: URL: https://github.com/apache/gravitino/pull/8980#discussion_r2618146992
########## iceberg/iceberg-rest-server/src/main/java/org/apache/gravitino/iceberg/service/cache/LocalScanPlanCache.java: ########## @@ -0,0 +1,136 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 + * + * http://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. + */ + +package org.apache.gravitino.iceberg.service.cache; + +import com.github.benmanes.caffeine.cache.Cache; +import com.github.benmanes.caffeine.cache.Caffeine; +import java.util.Optional; +import java.util.concurrent.TimeUnit; +import org.apache.iceberg.rest.responses.PlanTableScanResponse; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Local in-memory implementation of {@link ScanPlanCache} using Caffeine cache. + * + * <p>This cache is thread-safe and uses a LRU eviction policy. + * + * <p>Usage example: + * + * <pre>{@code + * ScanPlanCache cache = new LocalScanPlanCache(100, 60); + * Optional<PlanTableScanResponse> response = cache.get(key); + * response.ifPresent(r -> processResponse(r)); + * }</pre> + */ +public class LocalScanPlanCache implements ScanPlanCache { + + private static final Logger LOG = LoggerFactory.getLogger(LocalScanPlanCache.class); + + private Cache<ScanPlanCacheKey, PlanTableScanResponse> scanPlanCache; + /** + * Initializes the scan plan cache with specified configuration. + * + * @param capacity Review Comment: update the comment for param `capacity` and `expireMinutes` ? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
