2-1-toplinconf.json.txt

{
    "http": {
      "document_root": "/home/topling/db",
      "listening_ports": "8081"
    },
    "setenv": {
      "DictZipBlobStore_zipThreads": 8,
      "StrSimpleEnvNameNotOverwrite": "StringValue",
      "IntSimpleEnvNameNotOverwrite": 16384,
      "OverwriteThisEnv": { "overwrite": true,
        "value": "overwrite is default to false, can be manually set to true"
      }
    },
    "permissions": {
      "web_compact": true
    },
    "Cache": {
      "lru-cache-4G": {
        "class": "LRUCache",
        "params": {
          "capacity": "4G", "num_shard_bits": -1,
          "strict_capacity_limit": false, "high_pri_pool_ratio": 0.5,
          "use_adaptive_mutex": false,
          "metadata_charge_policy": "kFullChargeCacheMetadata"
        }
      }
    },
    "WriteBufferManager" : {
      "wbm": {
        "class": "Default",
        "params": {
          "//comment": "share mem budget with cache object ${lru-cache-4G}",
          "buffer_size": "2048M", "cache": "${lru-cache-4G}"
        }
      }
    },
    "Statistics": { "stat": "default" },
    "TableFactory": {
      "block_based": {
        "class": "BlockBasedTable",
        "params": {
    
        }
      },
      "cuckoo": {
        "class": "CuckooTable",
        "params": {
            
        }
      },
      "plain": {
        "class": "PlainTable",
        "params": {
        
        }
      }
    },
    "CFOptions": {
      "default": {
          "max_write_buffer_number": 4, "write_buffer_size": "128M",
          "target_file_size_base": "16M", "target_file_size_multiplier": 2,
          "table_factory": "block_based",
          "compression_per_level": [
              "kNoCompression", "kNoCompression", "kNoCompression",
              "kZlibCompression", "kZlibCompression",
              "kZlibCompression", "kZlibCompression"
          ],
         "ttl": 0
      }
    },
    "SliceTransform": {
        "default": {
            "class" : "FixedPrefixTransform",
            "params" :{
                "prefix_len" : 10
            }
        }
    },
    "databases": {
      "db1": {
        "method": "DB::Open",
        "params": {
          "options": {
            "write_buffer_manager": "${wbm}",
            "create_if_missing": true, 
            "table_factory": "block_based"
          }
        }
      },
      "db_mcf": {
        "method": "DB::Open",
        "params": {
          "db_options": {
            "create_if_missing": true,
            "create_missing_column_families": true,
            "write_buffer_manager": "${wbm}",
            "allow_mmap_reads": true
          },
          "column_families": {
            "default": "$default",
            "custom_cf" : {
                "max_write_buffer_number": 4,
                "target_file_size_base": "16M",
                "target_file_size_multiplier": 2,
                "table_factory": "block_based",
                "ttl": 0
                },
            "cuckoo_cf" : {
                "table_factory": "cuckoo"
                },
            "plain_cf" : {
                "table_factory": "plain",
                "prefix_extractor" : "$default"
                }
            },
            "path": "/home/topling/db/db_mcf"
        }
      }
    },

    "open": "db_mcf"
}