Update RocksDB default block cache size (#4132)

* Update RocksDB default block cache size.

Signed-off-by: Ameziane H <ameziane.hamlat@consensys.net>

plugins/rocksdb/src/main/java/org/hyperledger/besu/plugin/services/storage/rocksdb/configuration/RocksDBCLIOptions.java

@@ -20,7 +20,7 @@ import picocli.CommandLine;
 public class RocksDBCLIOptions {
 
   public static final int DEFAULT_MAX_OPEN_FILES = 1024;
-  public static final long DEFAULT_CACHE_CAPACITY = 8388608;
+  public static final long DEFAULT_CACHE_CAPACITY = 134217728;
   public static final int DEFAULT_MAX_BACKGROUND_COMPACTIONS = 4;
   public static final int DEFAULT_BACKGROUND_THREAD_COUNT = 4;
 
@@ -42,7 +42,7 @@ public class RocksDBCLIOptions {
   @CommandLine.Option(
       names = {CACHE_CAPACITY_FLAG},
       hidden = true,
-      defaultValue = "8388608",
+      defaultValue = "134217728",
       paramLabel = "<LONG>",
       description = "Cache capacity of RocksDB (default: ${DEFAULT-VALUE})")
   long cacheCapacity;

plugins/rocksdb/src/main/java/org/hyperledger/besu/plugin/services/storage/rocksdb/segmented/RocksDBColumnarKeyValueStorage.java

@@ -66,6 +66,8 @@ public class RocksDBColumnarKeyValueStorage
   private static final Logger LOG = LoggerFactory.getLogger(RocksDBColumnarKeyValueStorage.class);
   private static final String DEFAULT_COLUMN = "default";
   private static final String NO_SPACE_LEFT_ON_DEVICE = "No space left on device";
+  private static final int ROCKSDB_FORMAT_VERSION = 5;
+  private static final long ROCKSDB_BLOCK_SIZE = 32768;
 
   static {
     RocksDbUtil.loadNativeLibrary();
@@ -151,10 +153,10 @@ public class RocksDBColumnarKeyValueStorage
     final LRUCache cache = new LRUCache(config.getCacheCapacity());
     return new BlockBasedTableConfig()
         .setBlockCache(cache)
-        .setFormatVersion(5)
+        .setFormatVersion(ROCKSDB_FORMAT_VERSION)
         .setOptimizeFiltersForMemory(true)
         .setCacheIndexAndFilterBlocks(true)
-        .setBlockSize(32768);
+        .setBlockSize(ROCKSDB_BLOCK_SIZE);
   }
 
   @Override