increase memory usage

cozorocks/bridge/db.cpp

@@ -35,7 +35,12 @@ ColumnFamilyOptions default_cf_options() {
     options.compression = kLZ4Compression;
     options.level_compaction_dynamic_level_bytes = true;
     options.compaction_pri = kMinOverlappingRatio;
+
+    auto cache = NewLRUCache(128 << 20);
+
     BlockBasedTableOptions table_options;
+    table_options.block_cache = cache;
+
     table_options.block_size = 16 * 1024;
     table_options.cache_index_and_filter_blocks = true;
     table_options.pin_l0_filter_and_index_blocks_in_cache = true;