3.2.4中引用的 commons-beanutils 性能问题
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Description
3.2.4 在访问对象属性时使用了 Apache Commons BeanUtils 的 PropertyUtilsBean,导致频繁同步和反射开销。qps高的时候，大量锁冲突造成流量上不去。
org.apache.commons.beanutils.BeanUtilsBean.getInstance(): 78
org.apache.commons.beanutils.PropertyUtilsBean.getInstance(): 101
org.apache.commons.beanutils.PropertyUtils.getProperty(Object, String): 290
com.ql.util.express.ExpressUtil.getProperty(Object, Object): 544
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at com.ql.util.express.ExpressUtil.getProperty(Object, Object) and trace the calls into BeanUtilsBean.getInstance(), PropertyUtilsBean.getInstance(), and PropertyUtils.getProperty(Object, String). Reproduce the high-QPS contention described by the issue, then confirm completion with a benchmark or profile showing that the reported synchronization and reflection overhead has been addressed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100