jerryshao commented on code in PR #8696:
URL: https://github.com/apache/gravitino/pull/8696#discussion_r2432217728
##########
docs/iceberg-rest-service.md:
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@@ -420,6 +421,18 @@ Gravitino provides a pluggable metrics store interface to
store and delete Icebe
| `gravitino.iceberg-rest.metricsStoreRetainDays` | The days to retain Iceberg
metrics in store, the value not greater than 0 means retain forever.
| -1 | No | 0.4.0 |
| `gravitino.iceberg-rest.metricsQueueCapacity` | The size of queue to store
metrics temporally before storing to the persistent storage. Metrics will be
dropped when queue is full. | 1000 | No | 0.4.0 |
+### Iceberg table metadata cache configuration
+
+Gravitino features a pluggable cache system for updating or retrieving table
metadata caches. It validates the location of table metadata against the
catalog backend to ensure the correctness of cached data.
+
+| Configuration item | Description
| Default value | Required | Since Version |
+|--------------------------------------------------------------|---------------------------------------------|---------------|----------|---------------|
+| `gravitino.iceberg-rest.table-metadata-cache-impl` | The implement
of the cache. | (none) | No | 1.1.0 |
+| `gravitino.iceberg-rest.table-metadata-cache-capacity` | The capacity
of table metadata cache. | 200 | No | 1.1.0 |
+| `gravitino.iceberg-rest.table-metadata-cache-expire-minutes` | The expire
minutes of table metadata cache. | 60 | No | 1.1.0 |
+
+Gravitino provides build-in
`org.apache.gravitino.iceberg.common.cache.LocalMetadataCache` to store the
cache data in local memory. And you could implement your custom cache by
implementing `org.apache.gravitino.iceberg.common.cache.MetadataCache`
interface.
Review Comment:
"provides the built-in xxx"
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