Update index.md

Author: taowen

index.md

@@ -7,7 +7,7 @@ jsoniter (json-iterator) is fast and flexible JSON parser available in [Java](ht
 
 # Faster, Much Faster!
 
-Traditional JSON parsers are very slow. Jsoniter Java version could be **4x** times faster than jackson/gson/fastjson. If you are doing a lot of log processing or number crunching, but stuck with JSON, you definitely need to consider [dsl-json](https://github.com/ngs-doo/dsl-json) or Jsoniter to save the encoding/decoding cost. According to dsl-json, the JSON encoding/decoding speed is not a problem, [even faster than thrift/avro](https://www.codeproject.com/Articles/1165627/Jsoniter-JSON-is-faster-than-thrift-avro)
+Traditional JSON parsers are slow. Jsoniter Java version could be **3x** times faster than jackson/gson/fastjson. If you are doing a lot of log processing or number crunching, but stuck with JSON, you definitely need to consider [dsl-json](https://github.com/ngs-doo/dsl-json) or Jsoniter to save the encoding/decoding cost. According to dsl-json, the JSON encoding/decoding speed is not a problem, [even faster than thrift/avro](https://www.codeproject.com/Articles/1165627/Jsoniter-JSON-is-faster-than-thrift-avro)
 
 | scenario | Protobuf V.S. Jackson | Protobuf V.S. Jsoniter | Jsoniter V.S Jackson |
 | --- | --- | --- | --- |