GWT 请求工厂性能 [英] GWT RequestFactory Performance
问题描述
我有一个关于 RequestFactory 和 GWT 性能的问题.我有一个包含 8 个字段的域实体，它返回大约 1000 个 EntityProxies.请求触发和响应之间的时间约为 20 秒.我做了同样的事情，但返回了 10 个 EntityProxies，时间是 17 秒，几乎相同.
I have a question regarding the performance of RequestFactory and GWT. I have a Domain Entity with 8 fields that returns around 1000 EntityProxies. The time between the request fires and it responds is around 20 seconds. I do the same but returning 10 EntityProxies and the time is 17 seconds, almost the same.
这是因为我在开发模式下工作，还是因为我将代码发布到网络上的时间是一样的?
Is this because I'm working in development mode, or when I release the code to the web the time will be the same?
有什么办法可以提高性能吗?，我只是在读取数据，所以也许只读取不写入的东西可能是解决方案?
Is there any way to improve the performance? , I'm only reading data so perhaps something that only read and doesn't writes may be the solution?
我读了这篇文章，内容与我的问题类似:
I read this post with something similar to my problem:
非常感谢.
PD:我在某处读到一个解决方案可能是在服务器中创建一个 xml，将其发送到客户端并在那里重新创建对象，我不想这样做，因为它真的会改变我的应用程序的设计.
PD: I read somewhere that one solution could be to create an xml in the server, send it to the client and recreate the object there, I don't want to do this because it would really change the design of my app.
推荐答案
感谢大家的帮助，我现在意识到使用请求工厂检索数千条记录可能是一个错误.
Thank you all for the help, I realize now that perhaps using Request Factory to retrieve thousands of records was a mistake.
根据这篇文章，我最初使用定位器来覆盖 isLive() 和 Find() 方法:gwt-requestfactory-performance-suggestions
I initially used a Locator to override isLive() and Find() methods according to this post: gwt-requestfactory-performance-suggestions
响应时间减少到大约 13 秒，但仍然太高.
The response time was reduced to about 13 seconds, but it is still too high.
但我轻松解决了.我没有返回 1000+ Entities ，而是创建了一个新的数据库表，其中每个字段都具有所有相同的字段记录(1000+)，并由分隔符连接(每个 db 字段的长度约为 10000 )，并且表中只有一条记录大约有 8 个字段.
But I solved it easily. Instead of returning 1000+ Entities , I created a new database table which each field has all the same field records (1000+) concatenated by a separator (each db field has a length of about 10000 ) and I only have one record in the table with around 8 fields.
像这样:
Field1 | Field2 | Field3
Field1val;Field1val;Field1val;....... |Field2val;Field2val;Field2val;...... |Field3val;Field3val;Field3val;......
Field1val;Field1val;Field1val;....... | Field2val;Field2val;Field2val;...... | Field3val;Field3val;Field3val;......
我通过 RequestFactory 将 One 记录返回给我的客户端，它大大降低了速度！，大约 1 秒.我在客户端解析这个大字符串，持续时间约为 500 毫秒.因此，现在不再浪费大约 20 秒，而是需要大约 1-2 秒才能完成相同的任务.
I return that One record through RequestFactory to my client and it reduced the speed a lot!, around 1 second. I parse this large String in the client and the duration of that is about 500ms. So instead of wasting around 20 seconds now it takes around 1-2 seconds to accomplish the same.
顺便说一下，我只是显示信息，没有必要插入、删除或更新记录，所以这个解决方案对我有用.
By the way I am only displaying information, it is not necessary to Insert, Delete or Update records so this solution works for me.
我想我可以分享这个解决方案.
Thought I could share this solution.
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