diff --git a/db/rocksdb.go b/db/rocksdb.go
index e4fe33b2..68bfdc9a 100644
--- a/db/rocksdb.go
+++ b/db/rocksdb.go
@@ -44,10 +44,10 @@ const (
 var cfNames = []string{"default", "height", "outputs", "inputs"}
 
 func openDB(path string) (*gorocksdb.DB, []*gorocksdb.ColumnFamilyHandle, error) {
-	c := gorocksdb.NewLRUCache(8 << 30) // 8 gb
+	c := gorocksdb.NewLRUCache(8 << 30) // 8GB
 	fp := gorocksdb.NewBloomFilter(10)
 	bbto := gorocksdb.NewDefaultBlockBasedTableOptions()
-	bbto.SetBlockSize(16 << 10) // 16kb
+	bbto.SetBlockSize(16 << 10) // 16kB
 	bbto.SetBlockCache(c)
 	bbto.SetFilterPolicy(fp)
 
@@ -57,16 +57,16 @@ func openDB(path string) (*gorocksdb.DB, []*gorocksdb.ColumnFamilyHandle, error)
 	opts.SetCreateIfMissingColumnFamilies(true)
 	opts.SetMaxBackgroundCompactions(4)
 	opts.SetMaxBackgroundFlushes(2)
-	opts.SetBytesPerSync(1 << 20)    // 1mb
-	opts.SetWriteBufferSize(1 << 29) // .5 gb
+	opts.SetBytesPerSync(1 << 20)    // 1MB
+	opts.SetWriteBufferSize(1 << 24) // 16MB
 	opts.SetMaxOpenFiles(25000)
 	opts.SetCompression(gorocksdb.NoCompression)
 
 	// opts for outputs are different:
 	// no bloom filter - from documentation: If most of your queries are executed using iterators, you shouldn't set bloom filter
 	bbtoOutputs := gorocksdb.NewDefaultBlockBasedTableOptions()
-	bbtoOutputs.SetBlockSize(16 << 10) // 16kb
-	bbtoOutputs.SetBlockCache(c)       // 8 gb
+	bbtoOutputs.SetBlockSize(16 << 10) // 16kB
+	bbtoOutputs.SetBlockCache(c)       // 8GB
 
 	optsOutputs := gorocksdb.NewDefaultOptions()
 	optsOutputs.SetBlockBasedTableFactory(bbtoOutputs)
@@ -74,8 +74,8 @@ func openDB(path string) (*gorocksdb.DB, []*gorocksdb.ColumnFamilyHandle, error)
 	optsOutputs.SetCreateIfMissingColumnFamilies(true)
 	optsOutputs.SetMaxBackgroundCompactions(4)
 	optsOutputs.SetMaxBackgroundFlushes(2)
-	optsOutputs.SetBytesPerSync(1 << 20)    // 1mb
-	optsOutputs.SetWriteBufferSize(1 << 29) // 0.5 gb
+	optsOutputs.SetBytesPerSync(1 << 20)    // 1MB
+	optsOutputs.SetWriteBufferSize(1 << 24) // 16MB
 	optsOutputs.SetMaxOpenFiles(25000)
 	optsOutputs.SetCompression(gorocksdb.NoCompression)
 
diff --git a/test.json b/test.json
new file mode 100644
index 00000000..bef059bd
--- /dev/null
+++ b/test.json
@@ -0,0 +1,242 @@
+{
+  "sendTransaction": {
+    "method": "sendTransaction",
+    "params": [
+      "010000000001019d64f0c72a0d206001decbffaa722eb1044534c74eee7a5df8318e42a4323ec10000000017160014550da1f5d25a9dae2eafd6902b4194c4c6500af6ffffffff02809698000000000017a914cd668d781ece600efa4b2404dc91fd26b8b8aed8870553d7360000000017a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a8702473044022076aba4ad559616905fa51d4ddd357fc1fdb428d40cb388e042cdd1da4a1b7357022011916f90c712ead9a66d5f058252efd280439ad8956a967e95d437d246710bc9012102a80a5964c5612bb769ef73147b2cf3c149bc0fd4ecb02f8097629c94ab013ffd00000000"
+    ]
+  },
+  "sendTransactionResult": {
+    "result": "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7"
+  },
+  "getDetailedTransaction": {
+    "method": "getDetailedTransaction",
+    "params": [
+      "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7"
+    ]
+  },
+  "getDetailedTransactionResult": {
+    "result": {
+      "hex": "010000000001019d64f0c72a0d206001decbffaa722eb1044534c74eee7a5df8318e42a4323ec10000000017160014550da1f5d25a9dae2eafd6902b4194c4c6500af6ffffffff02809698000000000017a914cd668d781ece600efa4b2404dc91fd26b8b8aed8870553d7360000000017a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a8702473044022076aba4ad559616905fa51d4ddd357fc1fdb428d40cb388e042cdd1da4a1b7357022011916f90c712ead9a66d5f058252efd280439ad8956a967e95d437d246710bc9012102a80a5964c5612bb769ef73147b2cf3c149bc0fd4ecb02f8097629c94ab013ffd00000000",
+      "height": -1,
+      "version": 1,
+      "hash": "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7",
+      "locktime": 0,
+      "size": 166,
+      "inputs": [
+        {
+          "prevTxId": "c13e32a4428e31f85d7aee4ec7344504b12e72aaffcbde0160200d2ac7f0649d",
+          "outputIndex": 0,
+          "script": "160014550da1f5d25a9dae2eafd6902b4194c4c6500af6",
+          "scriptAsm": "0014550da1f5d25a9dae2eafd6902b4194c4c6500af6",
+          "sequence": 4294967295,
+          "address": "2N79YMqgEqpr1Lqgqi6gU76zqTWbk4dRqyV",
+          "satoshis": 930081328
+        }
+      ],
+      "inputSatoshis": 930081328,
+      "outputs": [
+        {
+          "satoshis": 10000000,
+          "script": "a914cd668d781ece600efa4b2404dc91fd26b8b8aed887",
+          "scriptAsm": "OP_HASH160 cd668d781ece600efa4b2404dc91fd26b8b8aed8 OP_EQUAL",
+          "address": "2NByHN6A8QYkBATzxf4pRGbCSHD5CEN2TRu"
+        },
+        {
+          "satoshis": 920081157,
+          "script": "a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a87",
+          "scriptAsm": "OP_HASH160 246655bdbd54c7e477d0ea2375e86e0db2b8f80a OP_EQUAL",
+          "address": "2MvZguYaGjM7JihBgNqgLF2Ca2Enb76Hj9D"
+        }
+      ],
+      "outputSatoshis": 930081157,
+      "feeSatoshis": 171
+    }
+  },
+  "getD2": {
+    "result": {
+      "hex": "010000000001019d64f0c72a0d206001decbffaa722eb1044534c74eee7a5df8318e42a4323ec10000000017160014550da1f5d25a9dae2eafd6902b4194c4c6500af6ffffffff02809698000000000017a914cd668d781ece600efa4b2404dc91fd26b8b8aed8870553d7360000000017a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a8702473044022076aba4ad559616905fa51d4ddd357fc1fdb428d40cb388e042cdd1da4a1b7357022011916f90c712ead9a66d5f058252efd280439ad8956a967e95d437d246710bc9012102a80a5964c5612bb769ef73147b2cf3c149bc0fd4ecb02f8097629c94ab013ffd00000000",
+      "blockHash": "0000000000000d77454274b1f62d1b4472d582fa02399489b3529c1861bd910a",
+      "height": 1283714,
+      "blockTimestamp": 1519053802,
+      "version": 1,
+      "hash": "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7",
+      "locktime": 0,
+      "size": 0,
+      "inputs": [
+        {
+          "prevTxId": "",
+          "outputIndex": 0,
+          "script": "160014550da1f5d25a9dae2eafd6902b4194c4c6500af6",
+          "scriptAsm": "0014550da1f5d25a9dae2eafd6902b4194c4c6500af6",
+          "sequence": 4294967295,
+          "address": "",
+          "satoshis": 0
+        }
+      ],
+      "inputSatoshis": 0,
+      "outputs": [
+        {
+          "satoshis": 100000000,
+          "script": "a914cd668d781ece600efa4b2404dc91fd26b8b8aed887",
+          "scriptAsm": "OP_HASH160 cd668d781ece600efa4b2404dc91fd26b8b8aed8 OP_EQUAL",
+          "address": ""
+        },
+        {
+          "satoshis": 9200811570,
+          "script": "a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a87",
+          "scriptAsm": "OP_HASH160 246655bdbd54c7e477d0ea2375e86e0db2b8f80a OP_EQUAL",
+          "spentIndex": 1,
+          "address": ""
+        }
+      ],
+      "outputSatoshis": 0,
+      "feeSatoshis": 0
+    }
+  },
+  "subscribe": [
+    "subscribe",
+    "bitcoind/hashblock"
+  ],
+  "subscribe": [
+    "subscribe",
+    "bitcoind/addresstxid",
+    [
+      "2MzTmvPJLZaLzD9XdN3jMtQA5NexC3rAPww",
+      "2NAZRJKr63tSdcTxTN3WaE9ZNDyXy6PgGuv",
+      "2NBBaTqmVhTPkjAY5k3QMrGrgT1obB6Yfqo",
+      "2MsiAgG5LVDmnmJUPnYaCeQnARWGbGSVnr3",
+      "2NEa5ASseCV5twDukyQQzZDeeGGLx8xqSk7",
+      "2N4N3tcDD9fscewxLhiikYeGx5ErdqBAB6i",
+      "2Muf6t9yiQgNQwEbeav65tioqXxUZgZZDsP",
+      "2MyLfpnU6V3htkKc4GDy3jZJwrqEny5zuD1",
+      "2N64PAnkCsNiNPS9jRcWdABgUQBVnSH3Txq",
+      "2NCMAKdd28nZRryJpp32QFGA2g2pqxk4TPU",
+      "2Mshkm6yjJsqc9An1Agyg8bNaLLByNwB5rk",
+      "2NDEEu7sZrMRybPZwkiPcNZTEeLCTcmdeNG",
+      "2MxWgUGs2Ei77s2NiE5tSAcnZa5sm46ucbx",
+      "2NA83v4j5NxYfwRrPKRHMHCQH7bjkKqpubF",
+      "2NEXU6r1AnbVaqKSJUJfH9MdpynrKaD1CJc",
+      "2Muay1N4aD2K3sg5mz6QsLMu8qpXfois8CJ",
+      "2N6vi3wuKjHgZyvsaiB4Z3ai5eB9FNSusut",
+      "2N3rvH6gmdPPMsGrsEpbeoYBkLdrE5bzYRy",
+      "2MufqF2TPsVwbBJ1KCM4dMSYorwNXNZg5ws",
+      "2Mw78UAMckVsTwXb8VnfDfozMJSaaR4Uqqr"
+    ]
+  ],
+  "subscribeResult:": [
+    "bitcoind/hashblock",
+    "000000000000104614560f9110e89a139baf87bd389c255cdbe3dcf8d8f78fc0"
+  ],
+  "subscribeResult": [
+    "bitcoind/addresstxid",
+    {
+      "address": "2NByHN6A8QYkBATzxf4pRGbCSHD5CEN2TRu",
+      "txid": "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7"
+    }
+  ],
+  "dbl": {
+    "result": {
+      "totalCount": 3,
+      "items": [
+        {
+          "addresses": {
+            "2N4Q5FhU2497BryFfUgbqkAJE87aKHUhXMp": {
+              "inputIndexes": [
+                0
+              ],
+              "outputIndexes": []
+            }
+          },
+          "satoshis": 0,
+          "confirmations": 221285,
+          "tx": {
+            "hex": "010000000001018a44999c07bba32df1cacdc50987944e68e3205b4429438fdde35c76024614090000000000ffffffff02404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987a8386f0000000000160014d16b8c0680c61fc6ed2e407455715055e41052f502483045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b950121033add1f0e8e3c3136f7428dd4a4de1057380bd311f5b0856e2269170b4ffa65bf00000000",
+            "height": 1063387,
+            "blockTimestamp": 1483374791,
+            "version": 1,
+            "hash": "65b811d3eca0fe6915d9f2d77c86c5a7f19bf66b1b1253c2c51cb4ae5f0c017b",
+            "inputs": [
+              {
+                "outputIndex": 0,
+                "script": "",
+                "scriptAsm": "",
+                "sequence": 4294967295,
+                "address": "2N4Q5FhU2497BryFfUgbqkAJE87aKHUhXMp",
+                "satoshis": 0
+              }
+            ],
+            "outputs": [
+              {
+                "satoshis": 5000000,
+                "script": "a9147a55d61848e77ca266e79a39bfc85c580a6426c987",
+                "scriptAsm": "OP_HASH160 7a55d61848e77ca266e79a39bfc85c580a6426c9 OP_EQUAL",
+                "address": "2N4Q5FhU2497BryFfUgbqkAJE87aKHUhXMp"
+              },
+              {
+                "satoshis": 7289000,
+                "script": "0014d16b8c0680c61fc6ed2e407455715055e41052f5",
+                "scriptAsm": "0 d16b8c0680c61fc6ed2e407455715055e41052f5",
+                "spentIndex": 1,
+                "address": ""
+              }
+            ]
+          }
+        }
+      ]
+    }
+  },
+  "dbc": {
+    "result": {
+      "totalCount": 3,
+      "items": [
+        {
+          "addresses": {
+            "2Mt7P2BAfE922zmfXrdcYTLyR7GUvbwSEns": {
+              "inputIndexes": [
+                0
+              ],
+              "outputIndexes": []
+            }
+          },
+          "satoshis": -4998060,
+          "confirmations": 167491,
+          "tx": {
+            "hex": "01000000000101b37ac5560b4af9d3c8128037c6f9710973870fe29d7d2bcb0af45109cdc7030000000000171600148696844b831babb221cdf61bd403d4957615ebfeffffffff01183c4c000000000017a914923d8873eaa1f1bf3ada05eddab1a8af36c40dcb8702473044022033f5eb9966f84aded43db81d7be4f61bd2640845f39e8451019411838f09979702205abe01330e56944bb9de0ed46b1c76eb45b88a501fea8063fd8b7035a620c2400121037ff6f928c104d7a01ebc9cf5e0a6d4f03e555788d6b4dda6e9ffbc40f6cdbaf700000000",
+            "blockHash": "00000000000008ff4f8113a18638d296f72acbdafe7b556e8c704a4840a30640",
+            "height": 1117182,
+            "blockTimestamp": 1491764656,
+            "version": 1,
+            "hash": "c6a92097466b9a690eeb9e704625587cbcf357520cc7573b2323d5b012026e0e",
+            "locktime": 0,
+            "size": 134,
+            "inputs": [
+              {
+                "prevTxId": "0003c7cd0951f40acb2b7d9de20f87730971f9c6378012c8d3f94a0b56c57ab3",
+                "outputIndex": 0,
+                "script": "1600148696844b831babb221cdf61bd403d4957615ebfe",
+                "scriptAsm": "00148696844b831babb221cdf61bd403d4957615ebfe",
+                "sequence": 4294967295,
+                "address": "2Mt7P2BAfE922zmfXrdcYTLyR7GUvbwSEns",
+                "satoshis": 4998060
+              }
+            ],
+            "inputSatoshis": 4998060,
+            "outputs": [
+              {
+                "satoshis": 4996120,
+                "script": "a914923d8873eaa1f1bf3ada05eddab1a8af36c40dcb87",
+                "scriptAsm": "OP_HASH160 923d8873eaa1f1bf3ada05eddab1a8af36c40dcb OP_EQUAL",
+                "spentTxId": "08c7ffb9d594d9c9f4e8827ca6058b94ff865260aa467c325562a213386be99e",
+                "spentIndex": 0,
+                "spentHeight": 1117205,
+                "address": "2N6aUMgQk8y1zvoq6FeWFyotyj75WY9BGsu"
+              }
+            ],
+            "outputSatoshis": 4996120,
+            "feeSatoshis": 1940
+          }
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file