在fastjson-1.2.11中，序列化性能有了很大提升，反序列化性能也有所提升，所以做一次和其他序列化库的性能对比测试。

测试场景

采用各个序列化库作者都比较认可的一个测试，来自https://github.com/eishay/jvm-serializers，由于官方的测试还没采用最新版本的fastjson，所以我fork修改使用最新的api，代码在这里https://github.com/wenshao/jvm-serializers/tree/fastjson-1.2.11

运行测试

git clone https://github.com/wenshao/jvm-serializers.git cd jvm-serializers/tpc make ./run-bench.sh json/jackson+afterburner/databind,json/fastjson/databind,json/fastjson_array/databind,protobuf,json/jackson/databind,msgpack/databind

类结构

eishay的场景，有三个类，类结构如下

class MediaContent { public Media media; public Image[] images; } class Media implements java.io.Serializable { public enum Player { JAVA, FLASH } public String uri; public String title; // Can be unset. public int width; public int height; public String format; public long duration; public long size; public boolean hasBitrate; public List persons; public Player player; public String copyright; // Can be unset. } class Image { public enum Size { SMALL, LARGE } public String uri; public String title; // Can be null public int width; public int height; public Size size; }

详细代码看这里：

• https://github.com/wenshao/jvm-serializers/blob/fastjson-1.2.11/tpc/src/data/media/MediaContent.java
• https://github.com/wenshao/jvm-serializers/blob/fastjson-1.2.11/tpc/src/data/media/Media.java
• https://github.com/wenshao/jvm-serializers/blob/fastjson-1.2.11/tpc/src/data/media/Image.java

测试数据

测试的场景是media.1.cks，对应的json如下

{"images":[{"height":768,"size":"LARGE","title":"Javaone Keynote","uri":"http://javaone.com/keynote_large.jpg","width":1024},{"height":240,"size":"SMALL","title":"Javaone Keynote","uri":"http://javaone.com/keynote_small.jpg","width":320}],"media":{"bitrate":262144,"duration":18000000,"format":"video/mpg4","height":480,"persons":["Bill Gates","Steve Jobs"],"player":"JAVA","size":58982400,"title":"Javaone Keynote","uri":"http://javaone.com/keynote.mpg","width":640}}

fastjson中，如果启用BeanToArray模式，对应的json为：

[[[768,1,"Javaone Keynote","http://javaone.com/keynote_large.jpg",1024],[240,0,"Javaone Keynote","http://javaone.com/keynote_small.jpg",320]],[262144,null,18000000,"video/mpg4",480,["Bill Gates","Steve Jobs"],0,58982400,"Javaone Keynote","http://javaone.com/keynote.mpg",640]]

参与测试各个库的版本

fastjson-1.2.11jackson-2.7.0protobuf-java-2.3.0.jar

测试结果

阿里云新加坡主机，普通配置，1 CPU 1024M Memory

java version "1.8.0_77" Java(TM) SE Runtime Environment (build 1.8.0_77-b03) Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)

create ser deser total size +dfl json/fastjson_array/databind 123 1289 1567 2856 281 163 json/fastjson/databind 120 2019 2610 4629 486 262 json/jackson+afterburner/databind 118 2142 3147 5289 485 261 json/jackson/databind 124 2914 4411 7326 485 261 msgpack/databind 122 1525 2180 3705 233 146 protobuf 244 2297 1296 3593 239 149

Raspberry Pi 3

java version "1.8.0_65" Java(TM) SE Runtime Environment (build 1.8.0_65-b17) Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)

create ser deser total size +dfl json/fastjson_array/databind 961 18162 19106 37268 281 163 json/fastjson/databind 976 31240 29890 61129 486 262 json/jackson+afterburner/databind 975 24539 34337 58876 485 261 json/jackson/databind 979 28238 49380 77618 485 261 msgpack/databind 1027 18768 26617 45385 233 146 protobuf 2626 26095 12538 38633 239 149