1. 背景介绍
近期需要对外部提供一个批量查询接口,接口逻辑并不复杂,只是返回的数据有点多。分页查询,最大查询100个单子,分页单页最大值没有限制,那么,极端情况下,就是一次查询100个单子,每个单子 6 种节点,每一个节点可以保存最大 10 张图片地址信息,单次查询最多返回 6K 条记录,大概72K。
由于是对外接口,必须要做压测,使用的工具是 jmeter,压测过程遇到了问题,解决过程中国走了不少弯路,所以,做下记录,也希望能帮到有同样问题的小伙伴。
2. 问题描述
压测执行脚本报错信息:
java
org.apache.http.ConnectionClosedException: Premature end of chunk coded message body: closing chunk expected
at org.apache.http.impl.io.ChunkedInputStream.getChunkSize(ChunkedInputStream.java:263)
at org.apache.http.impl.io.ChunkedInputStream.nextChunk(ChunkedInputStream.java:222)
at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:183)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:135)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:148)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.readResponse(HTTPSamplerBase.java:1936)
at org.apache.jmeter.protocol.http.sampler.HTTPAbstractImpl.readResponse(HTTPAbstractImpl.java:476)
at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:673)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:66)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1296)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1285)
at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:638)
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558)
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256)
at java.lang.Thread.run(Thread.java:750)
显然,这是被压测接口返回数据量过大导致的。
查看压测的聚合报告,吞吐量很低,发送速率很低,并发量上不来。
3. 解决方案
压缩接口响应信息
3.1 请求头添加参数
html
Accept-Encoding:gzip, deflate
3.2 springboot服务需要开启压缩
XML
server:
port: 8080
compression:
enabled: true
mime-types: application/json,application/xml,text/html,text/xml,text/plain
min-response-size: 2048
compression-level: 6
4. 尾记
问题解决,吞吐量飙升