SAP Fiori OData取数据的同步模式和异步模式比较-阿里云开发者社区

开发者社区> -开发者助手-> 正文

SAP Fiori OData取数据的同步模式和异步模式比较

简介: SAP Fiori OData取数据的同步模式和异步模式比较
+关注继续查看

Yesterday I was challenged by my colleague: in the CRM Fiori application “My Opportunity”, although the OData request for logo url is set as false ( means Synchronous ), why we still observe in UI that this request is done like Asynchronously?

image.pngFor the complete story about Image display logic in Fiori, please refer to this blog: CRM Fiori Application – how is image maintained and displayed in Fiori UI.


My colleague’s doubt is that he observed even the response of image url is not returned by backend, still end user could continue to work on UI – it seems UI is not blocked so my colleague considered that the request is done in an Asynchronous way.image.pngI just would like to share with you how I persuade him to accept this is really an Synchronous request.


The key idea here is: We are doing test in our internal system, the request for image url is almost immediately returned ( less than 2 seconds ), so it is really difficult to judge by eye whether it is synchronous or asynchronous.


As a result, I add another 13 seconds’ latency in OData service implementation:

image.pngSynchronous mode

Afterwards the synchronous behavior is quite obvious now. I click one item in navigation list to trigger the synchronous request for Image url retrieval. And after that, I cannot do any operation on UI – it is completely freezed.image.pngAsynchronous mode

Then I change the manual latency to 20 seconds and retest the UI.


Now every time I click one opportunity in the navigation list, still one http request for image logo is sent out. Compared with synchronous mode, this time the UI is not blocked – I can continue to work on UI without waiting for the response.


This asynchronous behavior could also easily be found in the timechart in Chrome network:

image.pngChrome development tool

UI5 inspector

Deal with “blank screen issue”

UI5 field formatter

Negative cache

Control registration and deregistration

Fiori flower animation

Fiori Icon logic

Find out the origin of suspicious HTTP roundtrips

Date Picker

Contact support button behavior

Two types of popup Dialog in Fiori

Fiori globalization – amount display truncation logic

An example of Fiori Globalization implementation – the number format mystery

HTTP 200 OK and HTTP 304 Not Modified

An example of how to find back button implementation on Smart Template generated application

FullScreenPageRoutes in Component.js

An easy way to find location where Unique id of UI5 control is created

More detail about Bootstrap script tag

A small tip I learn from UI5 Diagnostics tool – a practice of AOP programming

Another reason of empty screen issue and how I analyze the issue

Why Adapt UI button is visible in some system but missing in some other system

Open your SAP GUI transaction in Fiori launchpad

Why sometimes my OData request is cancelled automatically


版权声明:本文内容由阿里云实名注册用户自发贡献,版权归原作者所有,阿里云开发者社区不拥有其著作权,亦不承担相应法律责任。具体规则请查看《阿里云开发者社区用户服务协议》和《阿里云开发者社区知识产权保护指引》。如果您发现本社区中有涉嫌抄袭的内容,填写侵权投诉表单进行举报,一经查实,本社区将立刻删除涉嫌侵权内容。

相关文章
阿里云服务器怎么设置密码?怎么停机?怎么重启服务器?
如果在创建实例时没有设置密码,或者密码丢失,您可以在控制台上重新设置实例的登录密码。本文仅描述如何在 ECS 管理控制台上修改实例登录密码。
7537 0
使用NAT网关轻松为单台云服务器设置多个公网IP
在应用中,有时会遇到用户询问如何使单台云服务器具备多个公网IP的问题。 具体如何操作呢,有了NAT网关这个也不是难题。
25932 0
阿里云服务器如何登录?阿里云服务器的三种登录方法
购买阿里云ECS云服务器后如何登录?场景不同,大概有三种登录方式:
2566 0
阿里云服务器ECS远程登录用户名密码查询方法
阿里云服务器ECS远程连接登录输入用户名和密码,阿里云没有默认密码,如果购买时没设置需要先重置实例密码,Windows用户名是administrator,Linux账号是root,阿小云来详细说下阿里云服务器远程登录连接用户名和密码查询方法
9855 0
阿里云服务器端口号设置
阿里云服务器初级使用者可能面临的问题之一. 使用tomcat或者其他服务器软件设置端口号后,比如 一些不是默认的, mysql的 3306, mssql的1433,有时候打不开网页, 原因是没有在ecs安全组去设置这个端口号. 解决: 点击ecs下网络和安全下的安全组 在弹出的安全组中,如果没有就新建安全组,然后点击配置规则 最后如上图点击添加...或快速创建.   have fun!  将编程看作是一门艺术,而不单单是个技术。
9251 0
阿里云服务器如何登录?阿里云服务器的三种登录方法
购买阿里云ECS云服务器后如何登录?场景不同,阿里云优惠总结大概有三种登录方式: 登录到ECS云服务器控制台 在ECS云服务器控制台用户可以更改密码、更换系.
10870 0
如何设置阿里云服务器安全组?阿里云安全组规则详细解说
阿里云安全组设置详细图文教程(收藏起来) 阿里云服务器安全组设置规则分享,阿里云服务器安全组如何放行端口设置教程。阿里云会要求客户设置安全组,如果不设置,阿里云会指定默认的安全组。那么,这个安全组是什么呢?顾名思义,就是为了服务器安全设置的。安全组其实就是一个虚拟的防火墙,可以让用户从端口、IP的维度来筛选对应服务器的访问者,从而形成一个云上的安全域。
6337 0
阿里云服务器ECS登录用户名是什么?系统不同默认账号也不同
阿里云服务器Windows系统默认用户名administrator,Linux镜像服务器用户名root
2984 0
阿里云服务器如何登录?阿里云服务器的三种登录方法
购买阿里云ECS云服务器后如何登录?场景不同,云吞铺子总结大概有三种登录方式: 登录到ECS云服务器控制台 在ECS云服务器控制台用户可以更改密码、更换系统盘、创建快照、配置安全组等操作如何登录ECS云服务器控制台? 1、先登录到阿里云ECS服务器控制台 2、点击顶部的“控制台” 3、通过左侧栏,切换到“云服务器ECS”即可,如下图所示 通过ECS控制台的远程连接来登录到云服务器 阿里云ECS云服务器自带远程连接功能,使用该功能可以登录到云服务器,简单且方便,如下图:点击“远程连接”,第一次连接会自动生成6位数字密码,输入密码即可登录到云服务器上。
20993 0
2450
文章
0
问答
来源圈子
更多
+ 订阅
文章排行榜
最热
最新
相关电子书
更多
《2021云上架构与运维峰会演讲合集》
立即下载
《零基础CSS入门教程》
立即下载
《零基础HTML入门教程》
立即下载