FANNG1 commented on code in PR #8980:
URL: https://github.com/apache/gravitino/pull/8980#discussion_r2601584154


##########
iceberg/iceberg-common/src/main/java/org/apache/gravitino/iceberg/common/IcebergConfig.java:
##########
@@ -283,6 +283,36 @@ public class IcebergConfig extends Config implements 
OverwriteDefaultConfig {
           .intConf()
           .createWithDefault(60);
 
+  public static final ConfigEntry<String> SCAN_PLAN_CACHE_IMPL =
+      new ConfigBuilder(IcebergConstants.SCAN_PLAN_CACHE_IMPL)
+          .doc(
+              "The implementation of the scan plan cache. Gravitino provides a 
built-in "
+                  + "LocalScanPlanCache that stores cached data in memory. If 
not specified, "
+                  + "LocalScanPlanCache will be used by default. You can 
implement a custom scan plan "
+                  + "cache by implementing the ScanPlanCache interface.")
+          .version(ConfigConstants.VERSION_1_1_0)
+          .stringConf()
+          .create();
+
+  public static final ConfigEntry<Integer> SCAN_PLAN_CACHE_CAPACITY =
+      new ConfigBuilder(IcebergConstants.SCAN_PLAN_CACHE_CAPACITY)
+          .doc(
+              "Maximum number of scan plan results to cache. Larger values 
allow more queries to benefit "
+                  + "from caching but use more memory. Each cached entry 
stores the complete scan plan response, "
+                  + "which can be large for tables with many files. A typical 
scan plan might be several KB to MB "
+                  + "depending on table size.")
+          .version(ConfigConstants.VERSION_1_1_0)
+          .intConf()
+          .createWithDefault(200);
+
+  public static final ConfigEntry<Integer> SCAN_PLAN_CACHE_EXPIRE_MINUTES =
+      new ConfigBuilder(IcebergConstants.SCAN_PLAN_CACHE_EXPIRE_MINUTES)
+          .doc(
+              "Time in minutes after which cached scan plans expire if not 
accessed. Cached entries are automatically removed after this period of 
inactivity.")
+          .version(ConfigConstants.VERSION_1_1_0)

Review Comment:
   same to above comment



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